文献类型：期刊文献

英文题名：Identifying the realistic catalyst for aqueous phase reforming of methanol over Pt supported by lanthanum nickel perovskite catalyst

作者：Mao, Qianlong[1];Guo, Yong[1];Liu, Xiaohui[1];Shakouri, Mohsen[2];Hu, Yongfeng[2];Wang, Yanqin[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]Canadian Light Source Inc, 44 Innovat Blvd, Saskatoon, SK S7N 2V3, Canada

年份：2022

卷号：313

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20221912075510);WOS:【SCI-EXPANDED(收录号:WOS:000798713200002)】；

基金：Acknowledgements This work was supported financially by the NSFC of China (Nos. 22072041, 21832002, 21808063, 21872050) , and the Science and Technology Commission of Shanghai Municipality (10dz2220500) . We thank Canadian Light Source Inc. for the help at characterization of XANES.

语种：英文

外文关键词：Hydrogen production; Aqueous phase reforming; Perovskite; Pt; LaCO3OH

摘要：In-situ supply of H-2 by aqueous phase reforming (APR) of methanol is promising but still challenging due to the unsatisfied activity and stability of catalyst. Herein, we prepared lanthanum nickel perovskite supporting Pt catalysts and evaluated their performance in methanol APR. A transformation from lanthanum nickel perovskite into LaCO3OH happened after APR. The characterizations results reveal that these two perovskite catalysts transformed into LaCO3OH supporting Pt and NiO(x )structure. We further prepared Pt-NiOx/LaCO3OH catalyst to verify it. Combining with temperature programmed surface reaction, a possible mechanism is proposed. The transformed catalyst possessed more metallic Pt sites and more abundant active OH groups, which are beneficial for methanol decomposition and CO shift, respectively. In addition, although the structure transformation happened for perovskite supporting Pt catalyst, it presented extremely excellent stability with only 7% loss of its highest rate of hydrogen production after 315 h on stream.