Electronic promoter or reacting species? The role of LiNH2 on Ru in catalyzing NH3 decomposition

被引：47

作者：

Guo, Jianping ^{[1
,2
]}

Chen, Zheng ^{[3
,4
]}

Wu, Anan ^{[3
,4
]}

Chang, Fei ^{[1
,2
]}

Wang, Peikun ^{[1
,2
]}

Hu, Daqiang ^{[1
]}

Wu, Guotao ^{[1
]}

Xiong, Zhitao ^{[1
]}

Yu, Pei ^{[1
,2
]}

Chen, Ping ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

[4] Xiamen Univ, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[5] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

来源：

CHEMICAL COMMUNICATIONS | 2015年 / 51卷 / 82期

基金：

中国国家自然科学基金;

关键词：

COX-FREE HYDROGEN; AMMONIA DECOMPOSITION; RUTHENIUM CATALYST; LITHIUM IMIDE; GENERATION; STORAGE; CESIUM; POTASSIUM; NITRIDES; BARIUM;

D O I：

10.1039/c5cc04645a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

LiNH2 decomposes to NH3 rather than N-2 and H-2 because of a severe kinetic barrier in NHx (x = 1, 2) coupling. In the presence of Ru, however, a drastic enhancement in N-2 and H-2 formation is obtained, which enables the LiNH2-Ru composite to act as a highly active catalyst for NH3 decomposition. Experimental and theoretical investigations indicate that Li creates a NHx-rich environment and Ru mediates the electron transfer facilitating NHx coupling. A strategy in catalytic material design is thus proposed.

引用

页码：15161 / 15164

页数：4

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