文献类型：期刊文献

英文题名：Non-syngas direct steam reforming of methanol to hydrogen and carbon dioxide at low temperature

作者：Yu, Kai Man Kerry[1];Tong, Weiyi[1,2];West, Adam[1];Cheung, Kevin[1];Li, Tong[3];Smith, George[3];Guo, Yanglong[2];Tsang, Shik Chi Edman[1]

机构：[1]Univ Oxford, Dept Chem, Wolfson Catalysis Ctr, Oxford OX1 3QR, England;[2]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[3]Univ Oxford, Dept Mat, Oxford OX1 3PH, England

年份：2012

卷号：3

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000315992100065)】；

基金：This work was funded by EPSRC, UK. We thank Dr Jingping Hu and Prof. John Foord of Oxford Chemistry for support of the XPS characterization and Prof. Heyong He of Fudan University, China for the HAADF-STEM characterization. We also thank Drs Martin Fowles and Colin Park of Johnson Matthey Billingham, UK for useful discussion. W. T. would like to thank China Scholarship Committee (CSC) and the permission from the ECUST to undertake some of the research at Oxford University.

语种：英文

摘要：A non-syngas direct steam reforming route is investigated for the conversion of methanol to hydrogen and carbon dioxide over a CuZnGaOx catalyst at 150-200 degrees C. This route is in marked contrast with the conventional complex route involving steam reformation to syngas (CO/H-2) at high temperature, followed by water gas shift and CO cleanup stages for hydrogen production. Here we report that high quality hydrogen and carbon dioxide can be produced in a single-step reaction over the catalyst, with no detectable CO (below detection limit of 1 ppm). This can be used to supply proton exchange membrane fuel cells for mobile applications without invoking any CO shift and cleanup stages. The working catalyst contains, on average, 3-4 nm copper particles, alongside extremely small size of copper clusters stabilized on a defective ZnGa2O4 spinel oxide surface, providing hydrogen productivity of 393.6 ml g(-1)-cat h(-1) at 150 degrees C.