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Copyright of Journal of East China University of Science & Technology is the property of Journal of East China University of Science & Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Formaldehyde (HCHO) is one of the main pollutants in indoor air, which seriously affects the quality of indoor air and endangers human health. Catalytic oxidation at room temperature is an effective method to remove HCHO, which can completely convert HCHO into C()2 and H2 () at room temperature. However, noble metal catalysts are the main catalysts at present, which are expensive and not conducive to large-scale production and application. Tn this paper, Ti()2 carrier is prepared by sol-gel method, and MnFeO工 is supported by impregnation, evaporation, drying and roasting with manganese nitrate and ferric nitrate as active precursors. Meanwhile, the effects of metal oxide loading, molar ratio, roasting temperature and other factors on the catalytic oxidation performance of catalysts at room temperature are investigated. BET, SEM, XRD, H-TPR, ()2-TPT), in-situ DRIFTS and other techniques are used to characterize and analyze the catalysts. The experimental results show that when MnFeO 工 loading is 1() wt%, n (Mn):, z(Fe)=4:l and calcination temperature is 35() °C, the catalyst exhibits the best catalytic oxidation activity at room temperature, and the removal rate of formaldehyde reaches 87.6 % within 48 h. [ABSTRACT FROM AUTHOR]

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Energy Chemical Industry is the property of Energy Chemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Energy Chemical Industry is the property of Energy Chemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Energy Chemical Industry is the property of Energy Chemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chemistry & Industry of Forest Products is the property of Chemistry & Industry of Forest Products Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

With dodecyl amine intercalated orthorhombic molybdenum trioxide as the precursor, PH3 was produced by decomposition of sodium hypophosphite as the phosphorus source, in a confined space by in-situ carbonization and phosphating method to synthesize “N-doped MoP/graphite” composite materials. The microstructure and physicochemical properties of the catalyst samples obtained at different phosphating temperatures of 700, 800 and 900 ℃ were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, Raman spectroscopy （Raman）, and specific surface area measurement （BET）. The catalytic performance in the hydrogen evolution reaction（HER）of water was investigated. The results show that part of dodecyl amine decomposes to form N-doped graphite as the conductive structure, and the other part decomposes to form nitrogen-doped molybdenum phosphide. The 800 ℃ phosphating sample has the largest pore size ratio and electrochemically active surface area, and shows the best catalytic performance （overpotential ηonset=111 mV, Tafel slope b=70 mV/dec and excellent stability of 27 hours）which is better than those of most reported molybdenum phosphide catalysts. [ABSTRACT FROM AUTHOR]

A series of Ni/de-ZSM (the de-aluminized ZSM is named as de-ZSM) catalysts were prepared by impregnation method, the catalysts were characterized by XRD, TEM, H2-TPR, XPS, BET, and their performance of ammonia decomposition to produce hydrogen has also been investigated. The results show that when the loading amount of Ni reaches 5%, Ni nanoparticles in the 5%Ni/de-ZSM catalyst are highly dispersed and the catalytic activity is the best. When temperature rises to 650 ℃ and the space velocity is 30 000 mL/(h·g), the conversion rate of ammonia decomposition is as high as 90%, the hydrogen generation rate reaches 28.41 mmol/(min·g). The catalyst also shows excellent catalytic stability, which can effectively catalyze the ammonia decomposition up to 40 h. [ABSTRACT FROM AUTHOR]

The reaction path of 5-hydroxymethylfurfural prepared from cellulose was analyzed in detail, and the catalyst system including homogeneous catalyst and heterogeneous solid acid catalyst and solvent system such as single phase, multiphase and deep eutectic solvent systems for the preparation of HMF from cellulose in recent years were comprehensively summarized. In addition, the catalytic principle and activity of catalyst, the stability and application prospect of solvent system were also summarized. The challenges faced by the current research were summarized and the future development direction was prospected, in order to provide some reference for related researchers. [ABSTRACT FROM AUTHOR]

Methane catalytic cracking catalysts were prepared by impregnation method.The effects of catalyst support, active components, calcination temperature and reaction temperature on the formation of carbon nanotubes were investigated.The results show that the catalyst support is 5.0 g Al2O3,the active component is 3.91 g Ni（NO3）2, the calcination temperature is 550 ℃,and the reaction temperature is 700 ℃.0.200 0 g of catalyst sample was weighed and used in the catalyst evaluation device for methane catalyst cracking reaction, the amount of CNTs was 2.67 g. [ABSTRACT FROM AUTHOR]

Copyright of China Forest Products Industry is the property of China Forest Products Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Biomass Chemical Engineering is the property of Editorial Office of Biomass Chemical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

UiO-66-NH2 grafted pyridineimine ligand was prepared by post synthetic modification with metal organic frameworks (MOFs) UiO-66-NH2 and 2-pyridinecarboxaldehyde as raw materials, and then a novel UiO-66-NH2 grafted pyridineimine cobalt catalyst was synthesized by complexation reaction with UiO-66-NH2 grafted pyridineimine ligand and CoCl2·6H2O as raw materials. The structure of the products was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, inductively coupled plasma mass spectrometry and nitrogen adsorption-desorption, and the catalytic performance of the UiO-66-NH2 grafted pyridineimine cobalt catalyst in ethylene oligomerization was investigated. The results show that the reaction temperature, Al/Co molar ratio and ethylene pressure have a significant effect on the catalytic activity and products selectivity. The catalytic activity of 1.23×105g/ (molCo·h) and 88.96% selectivity of butene are obtained under the condition of the reaction temperature 25℃, Al/Co molar ratio of 1000 and ethylene pressure of 1.0 MPa. [ABSTRACT FROM AUTHOR]

It is well known that the hydrogen becomes the green and clean energy in the 21st century because of its high combustion heat value, abundant reserves and friendly-environment. In recent years, methane steam reforming for hydrogen production has attracted much attention. However, the complexity of methane reforming and the uncertainty of reaction mechanism are the important factors that restrict the industrial hydrogen production of methane steam reforming. Therefore, the reforming process from five aspects of the process of hydrogen production, reaction mechanism, thermodynamic research, catalyst types and reactors selection are summarized and analyzed in this paper. The change trend of Gibbs free energy in the process of hydrogen production from methane steam reforming is described, the influence rule of different vmrking conditions parameters on the reforming reaction and the select ion of reactors in reforming process are studied, the microscopic mechanism of the reforming reaction process is analyzed, and the influence degree of catalysts on the reforming reaction is revealed according to different kinds of catalysts. In this paper, the variation law of methane steam reforming for hydrogen production is summarized comprehensively, and the development prospect and research direction of methane steam reforming for hydrogen production are reviewed. [ABSTRACT FROM AUTHOR]

In this paper, four perovskite type composite metal oxide lanthanum co bait ate catalysts with different ratios are prepared by hydrothermal synthesis. The ratios of La(NO3)2, Co(NO3)2 and citric acid are 1 :1 :3, 1 :1 : 4, 1 : 1 : 5 and 1 : 1 : 6, respectively. The structure and properties of the catalyst are characterized by XRD, SEM and TEM. Acid red B is used as the research object. Xenon lamp is used to simulate the degradation of acid red B dye wastewater under sunlight. The results show that the degradation rates of acid red B by the four catalysts are more than 80%, while the LaCoOs catalyst with the ratio of 1 :1 : 6 has the best degradation effect on acid red B, and the degradation rate reaches 88.52% after visible light irradiation at 20 °C for 1 h. Tt is found that lanthanum cobaltate catalyst with large specific surface area has the best photocatalytic degradation effect on acid red B, on the contrary, the degradation effect of lanthanum cobalt ate catalyst with small specific surface area is poor. The degradation of acid red B by four ratios of lanthanum cobaltate catalysts accords with the first-order reaction kinetic equation. [ABSTRACT FROM AUTHOR]

Copyright of Special Oil & Gas Reservoirs is the property of Special Oil & Gas Reservoirs Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to summarize the research status of lignin photodegradation catalyst, from the aspect of photocatalysts such as metal oxides, metal sulfides, metal complexes, and organometallic complexes, the research and application of photodegradation catalysts for lignin and model compounds are reviewed, looking forward to the future development trend of photodegradation catalysts: with the continuous improvement of photocatalytic degradation mechanism research, more types of high-efficiency, low-cost and high-selectivity photodegradation catalysts for lignin and model compounds will be developed, and breakthroughs will be achieved in large-scale applications. [ABSTRACT FROM AUTHOR]

This paper studies the performance of the dielectric barrier discharge reactor and MnOx/γ-Al2O3 catalyst to enhance the removal of toluene. The effects of loading content, roasting temperature, roasting time and other conditions on the degradation of toluene were explored. The uniform design method was used to optimize the preparation parameters of toluene degradation, and the exhaust gas produced was monitored and analyzed online. The results show that: when the load content is 5%,the roasting temperature is 660 ℃,and the roasting time is 195 min, the degradation rate of toluene can reach 92.48%,which is significantly higher than that of the empty tower reactor（83.79%).The exhaust gas monitoring and analysis found that the concentration of O3 and NOX decreased from 246.76 mg/m³ and 110.99 mg/m³ to 90.30 mg/m³ and 20.69 mg/m³ respectively after adding the catalyst. Finally, the catalyst surface products were detected by GC-MS to analyze the reaction mechanism. The research provides new ideas for the development of plasma technology and provides a reference for the commercial application of this technology. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The catalyst molybdenum dibutyl dithiocarbamate was synthesized by one-pot method.The optimum ratio of experimental raw materials and technological parameters were studied, and the structure was characterized by FTIR, ¹H NMR and elemental analysis.The result showed that the best synthetic conditions were that molybdenum trioxide∶sodium sulfide∶sulfuric acid∶sodium dibutyl dithiocarbamate were 1∶1.4∶1.6∶1,the reaction temperature was 110℃ and reaction time was 4 h. [ABSTRACT FROM AUTHOR]

Phosphine (PH3) has been the most popular fumigant in use for pest control during the disinfestation of dry plant products. Since the PH3 is a colorless, flammable, and very toxic gas with a fishy or garlic smell, it is necessary to monitor the PH3 emission in a granary after fumigation. The Non-Thermal Plasma (NTP) combined with some catalysts has been widely expected to serve as a promising technique to detect Volatile Organic Gases (VOCs). However, there is little research about the NTP coupled iron oxide catalyst to remove the PH3 contaminant. In this study, a systematic investigation was made to clarify the effects of NTP combined with Fe2O3 catalysts on the PH3 removal efficiency using a dielectric barrier discharge NTP combined with a catalyst reaction device. The microstructure of catalysts after the coupling reaction was characterized by the Brunauer-Emmett-Teller (BET), X-ray powder Diffraction (XRD), and X-ray Photoelectron Spectroscopy (XPS). The products and reaction mechanism were analyzed after removing PH3. The results showed that the NTP combined with the carriers and catalysts changed the discharge state for the higher removal efficiency of PH3. Once the input power exceeded 53 W, the removal efficiencies of PH3 by the NTP combined with Fe2O3 catalysts were much higher than that with the plasma alone. Furthermore, the Fe2O3/Al2O3 catalysts presented the best coupling effect during the removal of PH3 contaminant. Once the input power was 58 W, the removal efficiencies of plasma alone, Al2O3, and Fe2O3/Al2O3 were 29%, 31.29%, 100%, respectively. More importantly, the specific surface area of Fe2O3/Al2O3 catalyst decreased by 11.23% after the coupling reaction, the content of Fe3+/(Fe2++Fe3+) increased by 21.06%, the content of Osur/(Olatt+Osur+Oads) decreased by 2.24%, the content of Fe decreased by 4.69%, and the content of P increased by 4.34 times. Moreover, phosphoric acid was the main product during the treatment. The high-energy electrons and active substances produced by NTP were directly reacted with PH3, and also acted on the Fe2O3 catalyst, leading to the change of discharge state. Further, the REDOX reaction of Fe3+ was participated to produce more surface reactive oxygen species, so that the PH3 adsorbed on the surface of the catalysts was oxidized into the phosphoric acid, indicating a higher removal efficiency of PH3. Consequently, the NTP combined with Fe2O3/Al2O3 catalyst better performed the PH3 removal efficiency. The finding can provide a strong theoretical basis to remove the phosphine contaminant from the grain storage industry. [ABSTRACT FROM AUTHOR]

This study aims to find out the content and source of heavy metals in the soil of the abandoned alum mining area in Lujiang County of Anhui Province, in China. A smart grid distribution was used to divide the research area into the 50 typical feature points with the center of Dafan Mountain. Five typical heavy metal elements (As, Cd, Cu, Mn, and Ni) were determined in the local soil. An UNMIX model was selected to apportion the potential sources and their contributions to soil heavy metals. A Kriging interpolation in the ArcGIS geo-statistical module was also utilized to determine the spatial distribution of soil heavy metals, further verifying the accuracy of the source analysis. The results showed that: 1) The average contents of As, Cd, Cu, Mn, and Ni were 47.38, 2.03, 30.89, 77.76, and 4.08 mg/kg in the 0-10 cm soil layer, and 50.62, 2.24, 30.82, 71.39, and 3.62 mg/kg in the 10-20 cm soil layer. The average contents of As, Cd, and Cu were all higher than the local background values. Specifically, the median contents of As and Cd were 1.28 and 7.17 times the risk screening value of soil pollution. 2) There were three major pollution sources of heavy metals in the 0-10 cm soil layer in the study area. Source 1 played a dominant role in Cu, indicating a traffic source with a contribution rate of 5.75%. There were higher contributions of Mn and Ni in Source 2, indicating the coal-burning source with a contribution rate of 49.86%. The contribution of Source 3 to As and Cd was higher than other metals. Source 3 was presented the weathering of rocks effects with a contribution rate of 44.39%. 3) There were two sources of heavy metals in the 10-20 cm soil, including the mixed sources of soil parent material and garbage (Source 1), as well as leaching, ore mining, and transportation (Source 2), where the contribution rates were 47.46% and 52.54%, respectively. 4) According to the land use types and human activities in the study area, the combination of receptor model and spatial analysis was used to comprehensively analyze the sources of heavy metals in the soil. [ABSTRACT FROM AUTHOR]

In order to achieve the goal of harmless treatment and recycling of oily sludge, a vacuum tubular pyrolysis furnace was employed in this study to conduct the catalytic pyrolysis experiment on the oily sludge from a refinery. Taking the oil phase recovery rate as the evaluation index, the process parameters were optimized while the pyrolysis residue was activated and subsequently applied to the adsorption treatment on the oily wastewate. The results showed that when the amount of activated clay was 1.5%（mass fraction）, the pyrolysis temperature was 440 ℃, the pyrolysis time was 3 h, and the heating rate was 10 ℃/min, and the recovery rate of oil phase could reach about 87.8%, a value could be regarded as efficient recovery. Further, the specific surface area and pore volume of the pyrolysis residue activated by KOH and NaOH were identified to be significantly higher than those of commercial activated carbon, and the leaching content of heavy metals is far less than the limited values in the relevant standard. The evaluation on the adsorption performance of activated pyrolysisresidues showed that when the dosage was 3%（mass fraction）, the petroleum substance content and COD in oily wastewater could be reduced by more than 90% and 95%, respectively. The adsorption efficiency could be considered to be significantly higher than that of commercial activated carbon. The petroleum substance content and COD value in the wastewater after adsorped by the activated pyrolysis residue could satisfy the Class 1 requirements of GB 8978-1996 Integrated Wastewater Discharge Standard. In this study, the recycling of pyrolysis residue has been realized. [ABSTRACT FROM AUTHOR]

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Energy Chemical Industry is the property of Energy Chemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Energy Chemical Industry is the property of Energy Chemical Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Petrochemical Universities / Shiyou Huagong Gaodeng Xuexiao Xuebao is the property of Journal Editorial Department Of Liaoning Shihua University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The gasification of biomass into gaseous fuels or chemical synthesis gas materials is one of the effective ways of clean and efficient utilization of biomass. Tar is a by-product of gasification, which affects gas production quality and gasification efficiency. The catalyst has obvious effects on the catalytic gasification of biomass and tar cracking, and has been widely used. This paper reviews the catalytic cracking effect, reaction conditions and catalytic mechanism of natural catalysts, inorganic salt catalysts and synthetic catalysts in the process of biomass gasification. The catalytic gasification performance and research progress of different catalysts were further analyzed. At the same time, it is pointed out that modifying natural ore catalysts or vigorously developing synthetic catalysts has a good prospect for the degradation of biomass gasification tar. [ABSTRACT FROM AUTHOR]

This article introduces the reasons and characteristics of the high viscosity of heavy oil; Clarified that surfactants mainly rely on emulsification and complex types of emulsions in the emulsification process to reduce viscosity; Explained that the oil-soluble viscosity reducer can reduce the viscosity of heavy oil through hydrogen bonding, solvation layer and dissolution and stripping methods; The mechanism of the effect of bond breaking, hydrogenation and light hydrocarbon solvent on viscosity reduction of heavy oil in the process of catalytic upgrading and viscosity reduction was reviewed. It also looks forward to the future development trend of viscosity reducers: With the development of heavy oil viscosity reducer technology and the gradual improvement of the mechanism of each viscosity reducer, there will be breakthroughs in the application of viscosity reducers in the field of heavy oil. [ABSTRACT FROM AUTHOR]

Expanded vermiculite (EVM) was used as a carrier to prepare NiO/EVM catalyst by homogeneous precipitation method. The different approaches including XRF, XRD, SEM, and BET were used to characterize the synthetic catalysts. The effects of calcination temperature, pyrolysis temperature, holding time, nickel loading and cycle times on the catalytic pyrolysis of straw to syngas were investigated. The results indicated that the active components of the NiO/ EVM catalyst was well loaded, uniformly dispersed, and with a specific surface area of 23.1 m²/ g. The NiO/EVM catalyst had the best catalytic efficiency at the calcination temperature was 400°C, the pyrolysis temperature was 800°C, the nickel loading was 20%, and a 20 min hold time. Compared with the pyrolysis without catalyst, the concentration of H2 and CO increased significantly from 21.20% to 36.76% and 27.13% to 35. 93%, respectively. After 6 consecutive regeneration cycles, the content of syngas was still relatively increased by 36. 5%. [ABSTRACT FROM AUTHOR]

Pt and Pt-based materials are the most efficient electro catalysts for oxygen reduction reaction (ORR). Herein, Pt-Co-Ni co-doped hollow carbon sphere/tubular carbon composite catalyst (I-Co-Ni/NHCS-TUC-6()()) with Pt content of less than 4 wt% is prepared. By constructing a reasonable spatial structure of the catalyst and introducing transition metal co--doping, the Pt mass activity of I-Co-Ni/NHCS-TUC-600 for ORR is greatly improved. ORR electrochemical activity tests show that the Pt-Co-Ni/NHCS-TUC-600 reveals excellent catalytic performance comparable to commercial IC, which is specifically expressed as the ORR onset potential of ().927 V (vs RHE), half-wave potential of 0.867 V (vs RHE), limiting diffusion current density of 6.97 mA/cm2. The prepared I-Co-Ni/NHCS-TUC-600 displays broad application prospects and provides new possibilities for the research of the catalysts with low Pt loading. [ABSTRACT FROM AUTHOR]

Copyright of Precious Metals / Guijinshu is the property of Precious Metals Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The mechanism and the application of different types of heterogeneous Fenton catalysts in wastewater treatment at home and abroad are discussed in detail, such as iron ore, sludge based, metal organic frameworks (MOFs), porous materials and other metals, are summarized・ Finally, the future research focus of heterogeneous Fenton catalyst is put forward in order to make the catalyst quantitative production and used in wastewater treatment project. [ABSTRACT FROM AUTHOR]

This article gives a detailed introduction to trans让ion metal boride catalysts that improve the efficiency of electrolysis of water for hydrogen production・ At the same time, it describes the synthesis of transition metal boride doped with non-metallic atoms and carbon-based materials and the study of its catalytic properties in water electrolysis. Summarize the synthesis methods and properties of transition metal borides mainly selected from Fe, Co, Ni, Mo borides, doped with non-metallic atoms C, N, P, carbon-based materials graphene, carbon nanotubes and carbon nanofibers, and finally put forward its main existing problems and future development direction. [ABSTRACT FROM AUTHOR]

Copyright of Transactions of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electronic Components & Materials is the property of Electronic Components & Materials and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Plastics / Zhongguo Suliao is the property of Journal Office of CHINA PLASTICS and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The development of gas sensor technology has a positive effect on the development of human society. Recent studies have shown that,atomic-level dispersed materials have ultra-high activity, unique electronic structure and quantum size effect, etc. Therefore, loading certain single atoms on certain gas-sensing mate rials will significantly improve the gas-sensing properties. This article reviews the preparation and characterization techniques of single atom materials in recent years and their research progress in gas sensors, and analyzes the performance advantages of single atom materials, single-,atom loading strategies, analysis methods, gas sensitivity and mechanisms, etc. The existing problems and the future development trend of single atom material based gas sensors are discussed, and finally some relevant opinions on the application and development of single atom materials in gas sensors are put forward. [ABSTRACT FROM AUTHOR]

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Petrochemical Universities / Shiyou Huagong Gaodeng Xuexiao Xuebao is the property of Journal Editorial Department Of Liaoning Shihua University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Refinery Engineering is the property of Petroleum Refinery Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)