Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition

	Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition
	Wu, Guotao 1; Chang, Fei 1,2; Guo, Jianping 1; Wang, Peikun 1,2; Yu, Pei 1,2; Chen, Ping 1,3,4
刊名	CATALYSIS TODAY
	2017-05-15
卷号	286 页码:141-146
关键词	Alkali metal amide Manganese nitride Electronic promotion Ammonia decomposition
英文摘要	Strong promoting effect of alkali metal amides, i.e., LiNH2, NaNH2 and KNH2, on the catalytic activity of manganese nitride (MnN) for ammonia decomposition has been demonstrated, which is evidenced by ca. 100 K drop in onset temperature and by ca. 50-60 kJ mol(-1) reduction in apparent activation energy as compared with the neat MnN. The order of promotion capability of alkali metal amides can be ranked as LiNH2 > KNH2 >= NaNH2, either in term of NH3 conversion rate or turnover frequency (TOF), which is distinctly different from that of conventional alkali metal oxides or hydroxides, i.e., K > Na > Li. This phenomenon suggests that the promoting mechanism of alkalis depends on their chemical forms. When alkalis are in the form of amide or imide, they may function as co-catalysts by participating in the catalytic circle directly rather than by executing electronic promotion influence on transition metals. (C) 2016 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	COX-FREE HYDROGEN ; NH3 DECOMPOSITION ; HETEROGENEOUS CATALYSIS ; BIMETALLIC CATALYSTS ; LITHIUM IMIDE ; SODIUM AMIDE ; RU ; GENERATION ; PROMOTER ; KINETICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000399005400016
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150344]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 4.Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Wu, Guotao,Chang, Fei,Guo, Jianping,et al. Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition[J]. CATALYSIS TODAY,2017,286:141-146.
APA	Wu, Guotao,Chang, Fei,Guo, Jianping,Wang, Peikun,Yu, Pei,&Chen, Ping.(2017).Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition.CATALYSIS TODAY,286,141-146.
MLA	Wu, Guotao,et al."Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition".CATALYSIS TODAY 286(2017):141-146.