title: Mechanistic insight into size-dependent activity and durability in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane.
abstract: 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.
authors.affiliation: State Key Laboratory of Chemical Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Wenyao
authors.initials: W
authors.lastname: Chen
authors.forename: Jian
authors.initials: J
authors.lastname: Ji
authors.forename: Xiang
authors.initials: X
authors.lastname: Feng
authors.forename: Xuezhi
authors.initials: X
authors.lastname: Duan
authors.forename: Gang
authors.initials: G
authors.lastname: Qian
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Xinggui
authors.initials: X
authors.lastname: Zhou
authors.forename: De
authors.initials: D
authors.lastname: Chen
authors.forename: Weikang
authors.initials: W
authors.lastname: Yuan