Inverse kinetic isotope effect of ammonia decomposition over Ru/CeO2 using deuterated ammonia

被引：1
作者：
Suguro, Takuya [1 ]
Kishimoto, Fuminao [1 ]
Kuramoto, Sota [1 ]
Movick, William J. [1 ]
Takanabe, Kazuhiro [1 ]
机构：
[1] Univ Tokyo, Sch Engn, Dept Chem Syst Engn, 7-3-1 Hongo,Bunkyo Ku, Tokyo, Japan
来源：
CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 60期
基金：
日本科学技术振兴机构;
关键词：
COX-FREE HYDROGEN; NH3; DECOMPOSITION; RU CATALYST; GENERATION; CLUSTERS; H-2; ADSORPTION; MECHANISM; STORAGE; NI;
D O I：
10.1039/d4cc02372b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This study investigated the ammonia decomposition mechanism over Ru/CeO2. Isotopic tests using ND3 revealed that the rate-determining step involves adsorbed nitrogen atoms on Ru. Moreover, an inverse kinetic isotope effect where ND3 decomposition was faster than NH3 was clearly observed. The origin of the inverse effect was explained by the lower D coverage on the catalyst surface compared to H coverage for mitigating the inhibition of ND3 activation.
引用
收藏
页码：7713 / 7716
页数：4
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