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Using Pt (NH3)4Cl2 and Pd (NO3)2 ·2H2O as precursor salts of Pt and Pd， and cordierite (Crd) ceramic honeycomb material as carrier， Pd-Pt/cordierite type catalysts for methane combustion performance， Pd-Pt/Crd-1[n (Pd): n (Pt)=1: 2] and Pd-Pt/Crd-2[n (Pd): n (Pt)=2: 1]， were prepared by impregnation method. The measurement results show that both catalysts can be uniformly dispersed on the surface of the carrier， and Pt/Pd exist in the same form. Wherein the interstitial space between particles doped with n (Pd): n (Pt)=2: 1 type catalyst is greater than n (Pd): n (Pt)=1: 2， and the catalytic sites of metal Pd/Pt loaded on its surface are more than n (Pd): n (Pt)=1: 2. Moreover， catalyst doped with n (Pd): n (Pt)=2: 1 exhibits richer acidic sites on the surface， showing superior thermal stability. The experimental results on catalytic activity of methane combustion reaction show that both catalysts can achieve almost 100% complete methane conversion efficiency at 450 ℃ . Impressively， the n (Pd): n (Pt)=2: 1 catalyst can achieve a methane conversion efficiency of 68. 43% at a combustion temperature of 410 ℃， which is 1. 14 times higher than the n (Pd): n (Pt)=1: 2 catalyst (60. 08%). Therefore， the catalyst demonstrates optimal catalytic performance in the lowtemperature region when the doping molar ratio of metals Pd to Pt is 2: 1. [ABSTRACT FROM AUTHOR]

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute 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 Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute 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 Sichuan University (Medical Science Edition) is the property of Editorial Board of Journal of Sichuan University (Medical Sciences) 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.)

SO2 released during sludge combustion causes significant environmental pollution. Sulfur can be fixed in the ash by adding a calcium-based sulfur-fixing agent, but the effect is limited because of its easy sintering at high temperatures. Herein, Ce-Mn/ZrO2 composite catalysts were prepared by coprecipitation method to improve the sulfur-fixing effect, and the composition and morphology of the catalysts were characterized by field emission scanning electron microscopic-energy dispersive spectroscopy (FESEM-EDS), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Further, by mixing the catalyst with a calcium-based sulfur-fixing agent and sludge, high-temperature sulfur-fixing experiments were carried out on a sulfur determination device to study its sulfur-fixing performance. The results showed that the synthesis method of the catalyst could effectively disperse Ce and Mn elements in the carrier. The synergistic effect between Ce-Mn could promote a reaction to produce more oxygen vacancies, thereby promoting the conversion of SO2 to SO3. The sulfur fixation rate was as high as 72. 60% when n (Ca)/n (S)=1. 5, the content of Ce-Mn/ZrO2 catalyst was 3. 5% and the combustion temperature was 1000 ℃. The results of the thermogravimetric analysis showed that the temperatures of sludge ignition were depressed as well as reaction activation energy, and the combustibility of sludge could be promoted after the agents were added. So that the sulfur fixation product could be stable. Ce-Mn/ZrO2 presents an excellent catalytic activity for sulfur fixation, so it has a broad prospect in enhancing sulfur removal in sludge combustion. [ABSTRACT FROM AUTHOR]

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.)

This article introduces a catalyst, (N, N-dimethyl-octadecylamine, DMSA), into the blend of poly(lactic acid)(PLA) and ethylene-butyl acrylate-glycidyl methacrylate graft copolymer (EBA-GMA), to improve the impact toughness of the PLA/EBA-GMA (70/30) blend system through the promotion of in-situ reaction between PLA and EBA-GMA. The influence of DMSA content on the mechanical properties of the blend system was investigated. The results show that the impact strength of the PLA/EBA-GMA (70/30) blend without DMSA is only 10. 9 kJ/m² . When the content of DMSA is 0. 5%, the impact strength of the PLA/ EBA-GMA (70/30) blend reaches as high as 63. 1 kJ/m² . Structural and morphological characterizations indicate that the addition of a small amount of DMSA effectively promotes the reactivity between epoxy groups on EBA-GMA and terminal groups of PLA, thereby enhancing the impact toughness of the PLA/EBA-GMA blend. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Electrochemistry is the property of Journal of Electrochemistry 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.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute 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 Clean Coal Technology is the property of Clean Coal 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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 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 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 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.)

Transition metal phosphate has attracted the attention of researchers in the field of electrolytic water because of its advantages of safety， cleanliness， low cost and high efficiency. Phosphate groups in phosphate have unique atomic geometric structure， strong coordination and various orientations， which are beneficial to stabilize the middle valence state of transition metals and accelerate proton conduction rate. However， its poor conductivity and low porosity have prompted researchers to explore and design more efficient transition metal phosphate electrocatalysts. Although researchers have invested a lot of time and energy， there are still many problems to be solved in the efficient development and utilization of transition metal phosphate electrocatalysts. In this paper， combined with the latest research progress of transition metal phosphate electrocatalysts， the development and design strategies of phosphate by researchers in recent years are introduced from the aspects of morphology control， defect engineering and interface engineering. At the same time， the opportunities and challenges faced by this kind of catalyst in the future material field are discussed from the aspects of scientific research and practical application. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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 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 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 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.)

Sulfuric acid, nitric acid, phosphoric acid and perchloric acid are usually used as catalysts for the preparation of organic peroxides. Due to the corrosion of strong acid to the equipment, the catalyst can not be reused, the amount of waste water after treatment is large, and the post-treatment cost is very high. The preparation of organic peroxides with heterogeneous catalysts has been paid more and more attention. Heterogeneous catalysts have the advantages of high activity, good stability and reusability, simple posttreatment, less equipment corrosion, and less environmental pollution. In this paper, on the basis of a brief introduction of the homogeneous preparation process of organic peroxides, the heterogeneous catalysts for the preparation of organic peroxides, including ion exchange resins, molecular sieves, phase transfer catalysts, metal oxides, polymer carrier catalysts and carbon-based support catalysts are summarized. The reactors and preparation processes are discussed, and the development direction of heterogeneous catalytic synthesis of organic peroxides is described. The study has strong reference value and guiding significance for understanding the progress in the preparation of organic compounds by heterogeneous catalysis, developing heterogeneous catalysts with excellent performance, and optimizing the production process of organic peroxides. [ABSTRACT FROM AUTHOR]

Propylene is a basic chemical raw material and the demand of which has been increasing in recent years, however, the traditional process such as steam cracking and catalytic cracking cannot meet the demand of propylene. Propane dehydrogenation （PDH） process has attracted extensive attention due to its wide sources of raw materials, high selectivity of propylene and easy separation of products. Traditional PDH catalysts are Pt-Sn/Al2O3 and CrOx /Al2O3, however, the platinum-based catalyst is expensive, and the chromium based catalyst has high toxicity. The bulk metal oxides （ZrO2, Al2O3, TiO2, WO3, Eu2O3 and Gd2O3） have the advantages of high intrinsic activity, low price, non-toxicity and environmental protection, exhibiting good application prospects. Based on this, this paper reviews the research progress of propane dehydrogenation from two aspects： the mechanism of PDH and the regulation of structure and properties for bulk metal oxide catalysts. It is summarized that coordinative unsaturated metal cation （M ） is the main dehydrogenation active site, and its concentration can be regulated by crystallite size, crystal phase, metal doping, noble metal nanoparticles loading, reducing gas （H2, CO） pretreatment, and so on. Finally, it is pointed out that the coupling of other dehydrogenation active sites （metals or metal oxides） on the basis of bulk metal oxides is an effective way to further improve the catalytic performance of PDH. [ABSTRACT FROM AUTHOR]

In order to improve the catalytic efficiency of metal catalysts for borohydride fuel cells, three-dimensional nano-porous Ag/NiO composite catalysts were prepared by dealloying method, with Al-Ag and Al-Ag-Ni as precursor alloys.On the premise of reducing the amount of Ag used, the catalyst has significantly improved its performance of electrocatalytic sodium borohydride oxide by virtue of the addition of NiO and its structural advantages.Among them, the nano porous Ag/NiO catalyst obtained after dealloying the precursor alloy Al90Ag9Ni1 has the best performance in the performance test of electrocatalytic oxidation of sodium borohydride, with a peak current density of 158.72 mA· mg-1,and a catalytic performance improvement of 35% compared to the nano porous Ag(116.88 mA·mg-1).This catalyst provides a feasible improvement method for improving the activity of sodium borohydride fuel cell catalysts and reducing costs. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Electrochemistry is the property of Journal of Electrochemistry 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 growing demand for energy is driving the development of renewable and efficient energy materialsdue to the high consumption of fossil fuels. Hydrogen is considered as a potential energy carrier because of its abundant earth sources and clean burning. The preparation of clean and renewable hydrogen by hydrolyzing ammonia borane is one of the effective ways to solve energy problems. The development of efficient and safe catalysts has been the focus and hotspot in this field. Metal-organic framework materials (MOFs) are widely used in ammonia borane hydrolysis for hydrogen production due to their unique structural composition. This paper focuses on the role of MOFs materials in catalyst preparation and summarizes the role of different MOFs materials in catalytic hydrogen production by ammonia borane hydrolysis. In addition, the current problems are summarized and the future development of this field is pointed out. [ABSTRACT FROM AUTHOR]

Copyright of Power Generation Technology is the property of Power Generation 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 Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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.)

In order to improve the activity of Pd catalyst for methanol catalytic oxidation, carbon fiber cloth was prepared by pre-oxidizing PAN/CA fiber cloth and heat-treated at 1 200 ℃, and the surface was loaded with different content of Pd. The microscopic structure of CNFs/Pd catalyst sample and performance testing were analyzed to find the effect of Pd catalyst. The results showed that the performance of the catalyst for electrocatalytic oxidation of methanol increased firstly and then decreased with the concentration increase of the PdCl2 solution. When the concentration of the PdCl2 solution was 0.02 mol/L, the catalyst performance was the best, and its performance and stability were about 3.3 and 10 times of the commercial Pd/C catalyst. Compared with the commercial catalyst, the activity and stability are both improved. [ABSTRACT FROM AUTHOR]

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 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.)

Bifunctional 20V/Ce-Al2O3 （mass percent 20% V2O5 ） catalysts are prepared by simply co-precipitation of 20V2O5/Al2O3 with Ce to improve the acidity of catalyst effectively，and tested for partial oxidation of methanol. The structural properties are characterized by X-ray diffraction（XRD），scanning electron microscopy（SEM-EDS），Raman spectroscopy（Raman），H2 temperature-programmed reduction（H2-TPR） and NH3 temperature-programmed desorption （NH3-TPD） techniques，respectively. The characterization results confirm that the incorporation of Ce in catalyst enhances the surface acidity，which is the key factor to improve the selectivity of DMM，and the interaction between vanadium oxide and the support is enhanced and the redox ability of the catalysts is reduced at the same time. The experimental results show that the catalyst 20V/8CeAl2O3 with mass percent 8% CeO2 exhibits the best catalytic performance and the reaction temperature has a great influence on the methanol oxidation products. Low temperature is more favourable for the formation of DMM. For the catalyst 20V2O5/8Ce-Al2O3，the methanol conversion and the DMM selectivity are 23. 6% and 99. 9% at 170 ℃，respectively. The selectivity of DMM is 99. 9% after 5 runs. The study provides valuable reference for improving the acidity of catalyst. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Electrochemistry is the property of Journal of Electrochemistry 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.)

Zeolite molecular sieves are indispensable catalysts in many industrial processes. Among them， Beta zeolite has become one of the most widely produced zeolite materials with industrial significance because of its three-dimensional macroporous structure. Compared with the traditional Beta zeolite，the hierarchical Beta zeolite has many advantages such as smaller steric hindrance，higher mass transfer efficiency and so on， which can reduce the formation of carbon deposition，prolong the service time of catalyst and improve the utilization efficiency of catalyst. This review introduces the synthesis of hierarchical Beta zeolite in detail from the two strategies of“bottom-up”（direct synthesis）and“top-down”（post modification）. The synthesis of hierarchical Beta zeolite by hard template method，soft template method，mesoporous template method， dealuminization method and desilication method are introduced，and the characteristics of hierarchical Beta zeolite are briefly introduced. The advantages and problems of various synthesis methods are summarized and the future development prospects are also prospected. [ABSTRACT FROM AUTHOR]

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]

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]

以SiO2、Al2O3和HZSM-5、Re-HY 分子筛为载体，以Zn 为主要活性成分，研究了不同类型载体以及不同Si/Al 比的HZSM-5 分子筛负载Zn 催化剂的愈创木酚加氢脱氧（HDO）反应性能。结果表明，催化剂的酸性是影响其加氢脱氧活性和产物选择性的主要因素，并且愈创木酚加氢脱氧转化为环己烷、BTX （苯、甲苯、二甲苯） 等完全脱氧产物的活性，与催化剂的总酸量、酸中心强度具有一定的相关性。

Copyright of Journal of Central South University is the property of Springer Nature 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 Zhejiang University: Science A is the property of Springer Nature 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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 Clean Coal Technology is the property of Clean Coal 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 Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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 Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials 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 Clean Coal Technology is the property of Clean Coal 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.)

Based on the research concept of catalytic depolymerization, using the Gary-King retort, the effect of catalyst and accessory ingredient in the catalytic depolymerization of Inner Mongolia lignite were investigated by adding catalyst with accessory ingredient, only adding catalyst and only adding accessory ingredient. The results showed that the addition of catalyst or accessory ingredient intervened the coal pyrolysis and products yield of gases or liquid phases. When only adding accessory ingredient, the fracture degree of the hydroxyl and fat side chains in the coal is deepened; when only adding catalyst, the fracture, dehydrogenation and aromatization of the bridge bond in coal are promoted; and when adding catalyst with the accessory ingredient, the superposition results of only adding catalyst and only adding accessory ingredient are reflected in all aspects, but the increase in tar yield reflects a certain degree of synergistic effect. Adding catalyst with the accessory ingredient is more beneficial for the formation of tar, which increased from 5. 84% of raw coal tar yield to 7. 28%. [ABSTRACT FROM AUTHOR]

Low temperature plasma as a technology for surface modification of materials has a good application prospect in catalyst modification field. The CuO/Al2O3 catalyst was treated by O2 plasma in a dielectric barrier discharge（DBD） reactor. The effect of plasma treatment sequence on the performance of CuO/Al2O3 catalyst in the combustion of methane in ventilation air was investigated using catalytic combustion experiment and SEM,BET, XRD,and XPS characterizations. The results show that the modification of catalyst after calcination is preferred because it could improve the catalytic activity of CuO/Al2O3 catalyst for the combustion of methane in ventilation air. The CuO grain size of the catalyst prepared by plasma treatment before calcinations is eight times larger than that of the catalyst obtained after the calcinations. As a result, the CuO dispersion of the catalyst surface is significantly reduced, which affects the catalytic effect. The reason for the larger agglomeration of the CuO particles prepared by the first plasma treatment is that the plasma treatment weakens the force between the Cu and the support Al2O3 and increases the size of the CuOparticles during the subsequent calcination. At the same time, the specific surface area and pore volume increase with the post-plasma treatment compared with the first plas-ma-treated catalyst, while the pore size decreases. The sequence of plasma treatment do not change the chemical valence of copper in the catalyst. [ABSTRACT FROM AUTHOR]

合成了邻特丁基水杨醛亚胺(3)配体，并与trans-[NiCl(Ph)(PPh3)2]反应制得了邻叔丁基水杨醛亚胺镍配合物(4){[O-(t-Bu)C6H2-ortho-C(H) = N-2,6-C6H3(i-Pr)2]Ni(Ph3P)(Ph)}, 以质谱、1H NMR、元素分析对配体和配合物进行了表征，以Al(i-Bu)3为助催化剂，在铝比Al/(4)为2.5〜40时，能有效地催化乙烯聚合.在8. 4×105 Pa的压力下，其最高活性可达4.05×105 g PE/(molNi • h)，所得聚乙烯粘均分子质量为0. 34 × 104〜3. 68 × 104 g/mol,与以Ni(COD)2为助催化剂相比较，Al(i-Bu)3/(4)是更为优良的乙烯聚合催化刑.

采用固定床积分反应器,研究了用浸渍法制备的CuO-ZnO/Y-zeolite双功能催化剂上CO加氢直接合成二甲醚的反应动力学.按一氧化碳加氢先合成甲醇,再由甲醇脱水生成二甲醚两步串联的反应机理,分别建立了动力学模型,并对该催化剂上甲醇合成及甲醇脱水的机理作了探讨.模型的计算值和实验值能较好吻合,两步反应的表观治化能分别为27.98 kJ/mol和30.62kJ/mol

制备了用于气相选择性氧化制对叔丁基苯甲醛的催化剂.通过反应温度、进料浓度、空速、催化剂寿命等条件的考察,讨论了影响反应的因素.结果表明,在合适的反应条件下产物对叔丁基苯甲醛选择性可达80 mol%以上,反应物对叔丁基甲苯转化率大于12 mol%,且催化剂经365 h长时间寿命试验活性仍较稳定,无论从工业应用前景角度来看,还是在环境保护方面都具有很大意义.