文献类型：期刊文献

英文题名：Hydrogen production from steam reforming of methanol over CuO/ZnO/Al2O3 catalysts: Catalytic performance and kinetic modeling

作者：Wan, Yu[1];Zhou, Zhiming[1];Cheng, Zhenmin[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：24

期号：9

起止页码：1186

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20161902350676);WOS:【SCI-EXPANDED(收录号:WOS:000387583600010)】；

基金：Supported by the National Natural Science Foundation of China (21276076), the Program for New Century Excellent Talents in University (NCET-13-0801) and the "111" Project (B08021).

语种：英文

外文关键词：Steam reforming of methanol; CuO/ZnO/Al2O3; Dopants; Cu surface area; Kinetics

摘要：A series of CuO/ZnO/Al2O3, CuO/ZnO/ZrO2/Al2O3 and CuO/ZnO/CeO2/Al2O3 catalysts were prepared by coprecipitation and characterized by N-2 adsorption, XRD, TPR, N2O titration and HRTEM. The catalytic performances of these catalysts for the steamreforming of methanol were evaluated in a laboratory-scale fixed-bed reactor at 0.1 MPa and temperatures between 473 and 543 K. The results showed that the catalytic activity depended greatly on the catalyst reducibility and the specific surface area of Cu. An approximate linear correlation between the catalytic activity and the Cu surface area was found for all catalysts investigated in this study. Compared to CuO/ZnO/Al2O3, the ZrO2-doped CuO/ZnO/Al2O3 exhibited higher activity and selectivity to CO, while the CeO2-doped catalyst displayed lower activity and selectivity. Finally, an intrinsic kinetic study was carried out over a screened CuO/ZnO/CeO2/Al2O3 catalyst in the absence of internal and external mass transfer effects. A good agreement was observed between the model-derived effluent concentrations of CO (CO2) and the experimental data. The activation energies for the reactions of methanol-steam reforming, water-gas shift and methanol decomposition over CuO/ZnO/CeO2/Al2O3 were 93.1, 85.1 and 116.5 kJ.mol(-1), respectively. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.