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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 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.)

Wood-based N, P co-doped graphene oxide modified foam (N, P-GCF) was prepared by liquefaction, resinization, foaming, carbonization and CO2 activation by liquefaction, resinization, foaming, carbonization and CO2 activation. The surface morphology, crystal structure, chemical properties and hydrophilic properties of N, P-GCF were analyzed by SEM, XRD, Raman, XPS and contact angle measuring instrument, and the effects of N, P-GCF on pore structure, electrochemical properties and capacitance deionization (CDI) were explored by changing the addition amount of NH4H2PO4. The results showed that after GOs modification and NH4H2PO4 doping, the pore size decreases and the disorder increases. N, P-GCF has a hierarchical pore structure. When the doping amount of NH4H2PO4 was 2 g, it had the highest specific surface area of 2684.11 m²/g, total pore volume of 1.42 cm³/g and mesoporosity of 49.45%, and the mass fractions of N and P were 2.48% and 3.46%, respectively. N elements mainly exist in the form of N-5, N-6 and N-X, and P elements are mainly P-C and P-N. Compared with CF, N, P-GCF2.0 has excellent wettability and mechanical properties. In the three-electrode system of 1 mol·L NaCl electrolyte, the specific capacitance of N, P-GCF2.0 is 256.48 F/g at a current density of 1 A/g, and the specific capacitance retention rate is 72.51% when the current density increases to 15 A/g. Under the initial NaCl solution of 500 mg/L and the working voltage of 1.2 V, N, P-GCF2.0 had the best desalination capacity (29.97 mg/g) and salt adsorption rate (1.84 mg/(g·min)), and the retention rate of desalination capacity was 90.12% after 10 cycles, indicating good cycling stability. [ABSTRACT FROM AUTHOR]

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management 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.)

Carbon foam composites, reinforced by micro-nano multiscale phases, were prepared with CNTs modified phenolic resin as the carbon source, magnesium borate whiskers (Mg2B2O5w) and ZrO2 nano-particles as the reinforcement, and hollow microspheres as dispersed phase, respectively. The effects of micro-nano multi-scale phases on the microstructure, mechanical properties, electromagnetic shielding and thermal oxidation properties of the carbon foams were investigated. The results demonstrated that Mg2B2O5w and ZrO2 nano particles contributed a lot to the performance of carbon foam composites synergistically. With the increase of Mg2B2O5w doping, the mechanical properties of the composites first increased and then decreased. The compressive strength reached the maximum (15.4 MPa) with the doping amount of 6 %, which was 111% higher than that of pure carbon foam. Its electromagnetic shielding performance also improved with the increase of Mg2B2O5w doping. The total electromagnetic shielding of 8% CPF was up to 51 dB at 9 GHz, which was 62% higher than that of pure carbon foam. 6% CPF showed the best high-temperature oxidation resistance. Its mass loss reduced from 25% to 15% during isothermal oxidation, at 600 °C for 20 min. The high-temperature oxida¬tion resistance improved by 40 %, compared to that of pure carbon foam. [ABSTRACT FROM AUTHOR]

Copyright of Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao is the property of Basic Sciences Journal of Textile Universities 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.)

Carbon foam catalysts (CF1, CF2, CF3) were prepared by spontaneous foaming method using Liulin coal (LL) as raw materials, and the pyrolysis experiments of Xinjiang Naomaohu long-flame coal (NMH) and Inner Mongolia Shengli lignite coal (SL) were performed by Py-GC/MS at 700 ℃. The effects of carbon foam catalysts with different pore structure on the distribution of gaseous tar products were investigated. The results show that compared with normal semicoke catalyst (SC), carbon foam catalysts have more significant advantages in improving the quality of tar from coal pyrolysis. The catalytic performance of carbon foam catalysts is closely related to its pore structure and chemical character. After the action of CF1, the total amount of tar during pyrolysis of NMH and SL is significantly increased (the increase rates are 10.26% and 31.31%, respectively), which is related to its suitable specific surface area (281.14 m2/g), rich micropore structure (microporous area accounts for 88.96% of the total specific surface area), and appropriate reactivity. CF2 and CF3 with rich hierarchical pore structure and higher reactivity make the total amount of NMH and SL tar decrease. In addition, the relative content of light aromatic hydrocarbons in gaseous tar of coal pyrolysis increases and the relative content of compounds containing O, N and S decreases by CF catalysts. These results indicate that these CF catalysts can significantly promote catalytic cracking, deoxidation, aromatization, and other reactions during the pyrolysis of NMH and SL, and can directionally control the distribution of gaseous tar from coal pyrolysis.

Copyright of Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao is the property of Basic Sciences Journal of Textile Universities 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.)

A three-dimensional porous carbon foam absorber was prepared by surfactant foaming method. The relative content of organic matter/C for carbon foam was adjusted by varying the carbonization temperature. The relationship of organic matter/C, light absorption and thermal conductivity was studied to find an optimal equilibrium for comprehensively optimizing the solar steam evaporation performance. Results show that the carbonization temperature has a great effect on the relative content of organic matter/C and pore structure of carbon foam. With reducing relative content of organic matter/C, it demonstrates a significant improvement for light absorption, but also suffers a decrease of thermal insulation performance, which worsens the thermal management ability of solar evaporation system. When carbonized at 600 ℃, the carbon foam absorber can acquire a optimal equilibrium between light absorption and thermal management, which reveals the highest absorption rate (96.5%) and best solar steam evaporation performance (1.0391 kg/ (m²·h)). The vapor evaporation rate is 2.08 times higher than that of pure water. [ABSTRACT FROM AUTHOR]

Copyright of Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao is the property of Basic Sciences Journal of Textile Universities 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 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.)

Hierarchical porous carbon foam, using liquid foam as soft template and water-soluble phenolic resin as carbon source and isocyanate as curing agent, was fabricated by microwave activation method. The structure and electrochemical properties of the carbon foam were characterized. The results show that the microwave activation technology can improve the rapid evolution of H2O molecules on the liquid foam film to form a large number of nanopores on the carbon foam wall to lead to the increased specific surface area,but do not change the average pore size. The specific surface area of the activated sample is 378.2m2/g and its specific capacitance at 1A/g current density is 123.7F/g, which is about 94% higher than that of the unactived sample.And the internal resistance of the sample is reduced due to the improvement of the pore structure by microwave activation.

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.)

SiC coating grows in the flexible carbon foam via chemical vapor deposition (CVI) to investigate the effect of CVI-SiC on mechanical properties and thermal insulation performance of reinforced foam. The microstructure morphology and phase composition of the carbon foam and the reinforce foams are analyzed by SEM and XRD, respectively. The pore structure and thermal conductivity of the carbon foam and the reinforce foams are measured by mercury intrusion porosimetry and heat flow tester, respectively. The compression strength of the reinforce foams is measured by universal tester. The results show that the β-SiC coating grows uniformly on the carbon foam surface and the surface morphology of SiC coating depends on the surface morphology of matrix. When the thickness of SiC coating increases, pore size in the 3D interconnected network structure decreases, and the porosity decreases from 99.68% to 58.39%; the compression feature of reinforced foams changes from elastic deformation to plastic deformation, and the compression strength increases from 0.02 MPa to 3.14 MPa; the heat transfer area increases,and the thermal conductivity of foam samples increases from 0.026 W/(m·K) to 0.101 W/(m·K). [ABSTRACT FROM AUTHOR]

On the basis of mesophase pitch decomposition behavior, carbon foam was prepared from AR mesophase pitch in a stainless steel mold by heating to appropriate temperature under adequate pressure, followed by foaming and carbonization. The effect of soaking temperature, pressure and cure temperature on the pore structure was investigated. The results show that, with increasing of soaking temperature, the pore diameter and open porosity increase. With the elevation of initial pressure, the pore diameter and open porosity decrease. The shape of pore structure is from ellipse to circle and open porosity increase while the cure temperature rising. [ABSTRACT FROM AUTHOR]

The effect of Si addition in carbon foam on the microstructures and properties of porous SiC ceramics was studied. Porous SiC ceramics were prepared by infiltrating molten Si into carbon foam derived from the mixture of mesophase pitch and different amounts of Si powder. The microstructures, phase constitutions, porosity and flexural strength of porous SiC ceramics were analyzed and tested. The results showed that the porosity of the porous SiC ceramics decreases, and the strut density as well as flexural strength of porous SiC ceramics increase with the increase of the Si content. When Si content reaches 50%, the strut composed completely of SiC and the strut density is 3.14 g/cm³. In addition, the highest flexural strength of 23.9 MPa was attained at a porosity of 55 %. [ABSTRACT FROM AUTHOR]