文献类型：期刊文献

英文题名：Mechanistic Insight into Size-Dependent Activity and Durability in Pt/CNT Catalyzed Hydrolytic Dehydrogenation of Ammonia Borane

作者：Chen, Wenyao[1];Ji, Jian[1];Feng, Xiang[1];Duan, Xuezhi[1];Qian, Gang[1];Li, Ping[1];Zhou, Xinggui[1];Chen, De[2];Yuan, Weikang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

年份：2014

卷号：136

期号：48

起止页码：16736

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20145000314752);WOS:【SCI-EXPANDED(收录号:WOS:000345883900010)】；

基金：This works was financially supported by the 111 Project of Ministry of Education of China (B08021) and the Natural Science Foundation of China (21306046 and 21276077).

语种：英文

外文关键词：Dehydrogenation - Hydrogen production - Ammonia - Catalysis - Catalysts - Particle size

摘要：We report a size-dependent activity in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane. Kinetic study and model calculations revealed that Pt(111) facet is the dominating catalytically active surface. There is an optimized Pt particle size of ca. 1.8 nm. Meanwhile, the catalyst durability was found to be highly sensitive to the Pt particle size. The smaller Pt particles appear to have lower durability, which could be related to more significant adsorption of B-containing species on Pt surfaces as well as easier changes in Pt particle size and shape. The insights reported here may pave the way for the rational design of highly active and durable Pt catalysts for hydrogen generation.