文献类型：期刊文献

英文题名：Development of nano NixMgyO solid solutions with outstanding anti-carbon deposition capability for the steam reforming of methanol

作者：Luo, Xiang[1];Hong, Yu[1];Wang, Fuchen[2];Hao, Siqi[3];Pang, Chengheng[1];Lester, Edward[4];Wu, Tao[1]

机构：[1]Univ Nottingham Ningbo China, Key Lab Clean Energy Convers Technol, Ningbo 315100, Zhejiang, Peoples R China;[2]E China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[3]Univ Nottingham Ningbo China, Dept Chem & Environm Engn, Ningbo 315100, Zhejiang, Peoples R China;[4]Univ Nottingham, Dept Chem & Environm Engn, Univ Pk, Nottingham NG7 2RD, England

年份：2016

卷号：194

起止页码：84

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20172603812392);WOS:【SCI-EXPANDED(收录号:WOS:000377827300011)】；

基金：Following funding bodies are acknowledged for partially sponsoring this research: Ningbo Bureau of Science and Technology (Innovation Team Scheme, 2012B82011 and Major Research Scheme, 2012810042), and Zhejiang Provincial Department of Science and Technology (Innovation Team on SOx and NOx Removal Technologies, 2011R50017), and Ministry of Science and Technology (International Cooperation Programme, 2012DFG91920). The University of Nottingham Ningbo China is also acknowledged for providing the first author IDIC scholarship.

语种：英文

外文关键词：Nano; Steam reforming; Carbon deposition; Methanol; Hydrogen production; Solid solution

摘要：In this study, different types of nano NixMgyO solid solutions for the steam reforming of methanol were prepared via three different preparation methods. The solid solutions were characterised systematically by using a suite of characterisation techniques. TEM analysis demonstrated that Ni particles in these solid solutions were in nano-scale with an average size of 9.6-12 nm. The catalytic performance of these catalysts was evaluated using a fixed-bed reactor operated under atmospheric pressure at four different temperatures, i.e., 400, 500, 600 and 700 degrees C, and at two steam-to-carbon ratios (S/C), i.e., S/C= 1 and 3. Results showed that the nano NixMgyO material (NixMgyO-hydro), which was prepared using a hydrothermal method, achieved the highest methanol conversion efficiency of 97.4% and hydrogen yield of 58.5% under a S/C ratio of 3. The evaluation on carbon deposition resistance showed that nano NixMgyO-hydro had no detectable carbon deposited under a S/C ratio of 3. In addition, physical and chemical properties of these catalysts were also studied by using H-2-Temperature Programmed Reduction/Desorption(H-2-TPR/D), CO2-Temperature-Programmed Desorption(CO2-TPD) and X-ray Photoelectron Spectroscopy(XPS). The outstanding carbon deposition resistance of NixMgyO-hydro was attributed to the "isolation effect" of the NixMgyO solid solution structure, which restricts Ni nano particles from aggregation. The high basicity of the surface of NixMgyO-hydro catalyst also resulted in the enhanced adsorption of CO2 and therefore contributed to anti-carbon deposition by providing oxygen to promote the gasification reaction between carbon and CO2. (C) 2016 Elsevier B.V. All rights reserved.