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991.
《International Journal of Hydrogen Energy》2021,46(59):30334-30343
The development of microbial fuel cells (MFCs) into a new type of carbon-neutral wastewater treatment technology requires efficient and low-cost oxygen reduction reaction catalysts in air cathodes. The use of raw soybean powder was investigated for synthesizing Fe–N–C ORR catalysts in a sacrificial SiO2 support method. ZnCl2 etching in the synthesis was found to facilitate the formation of hierarchical porous structures of Fe–N–C catalysts. Fe–N–C(1-1) catalyst synthesized with an optimal soybean/ZnCl2 mass ratio of 1:1 exhibited the highest ORR activity in air cathodes. The use of the obtained Fe–N–C(1-1) catalyst enables a maximum power production of ~0.480 mW cm−2 in MFCs, higher than commercial Pt/C (0.438 mW cm−2) with the same catalyst loading of 2 mg cm−2. Long-term MFC operations demonstrated that the Fe–N–C synthesized from raw soybean have high stability and toxic tolerance, indicating that abundant low cost soybean biomass is a potential material for ORR catalyst development in MFC applications. 相似文献
992.
《International Journal of Hydrogen Energy》2021,46(64):32577-32582
A new method was developed for repairing Pd/Al2O3 membranes with macro defects without the need of disassembling the membrane from the module. In order to target and fill the membrane defect automatically with solid particles, a TiO2 powder was firstly tested by flowing high-pressure nitrogen as a carrier gas, followed by a heat treatment. A filter cake was found on the membrane defect but still porous. A glass powder was selected instead of TiO2, and the membrane defect was successfully sealed by glazing. The in-situ repair of a waste commercial Pd/Al2O3 membrane separator was carried out with the glass powder, and the hydrogen flux and H2/N2 selectivity of the membrane separator at 450 °C under 100 kPa reached 12.6 m3m−2h−1 and 1600, respectively. 相似文献
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The aim of this study is to couple molten carbonate fuel cell (MCFC) stack with integrated gasification combined cycle fed by refinery residues, to remove CO2 from gas turbine exhaust gases that have CO2 emission rate of 14,200 ton/year. By applying multi-objective optimisation (MOO) using genetic algorithm, the optimal values of operating load and the corresponding values of objective functions are obtained. The MOO of the MCFC system regarding two scenarios is performed. The first scenario is minimisation of cost of electricity (COE) and CO2 emission rate. Objective functions of the second scenario are the same as in the first scenario while CO2 tax is taken into account. Results show that the second scenario has 29.5% lower average optimal COE and 2.5% lower average emission rate in comparison with the first scenario. A sensitivity analysis is also performed to study the effect of fuel price and CO2 tax variations on optimal solutions. 相似文献
996.
本工艺成功解决了传统生产工艺中催化剂与丙二醇难以分离,导致丙二醇产率低、纯度低、不能连续生产的问题。生产的丙二醇的质量更好,节能、产率高,废物实现零排放,实现了连续生产。 相似文献
997.
M. A. Takassi 《Fullerenes, Nanotubes and Carbon Nanostructures》2016,24(2):128-138
In order to improve the dispersion of multi-walled carbon nanotubes (MWCNTs) in polyimide (PI) matrix and the interfacial interaction between MWCNTs and PI, 3,5-diamino-N-(1H-[1,2,4]triazol-3-yl)-benzamide (DTB)-functionalized MWCNTs (DTB-MWCNTs) were synthesized by amidation reaction. The DTB-MWCNTs were analyzed by several techniques. DTB-MWCNTs were used as a platform for the grafting of a DTB-based PI in N,N′-dimethylformamide solution with different loadings of DTB-MWCNTs to produce PI-grafted MWCNT (PI-g-MWCNT) composites. The thermal, mechanical, and electrical properties of the PI-g-MWCNT composites were improved compared with PI due to the homogeneous dispersion of DTB-MWCNTs and strong interfacial covalent bonds between DTB-MWCNTs and the PI chain. 相似文献
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Tailoring the luminescence and photocatalytic activity of KMn4(PO4)3 by Anions (N3‐ and S2‐) doping
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