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Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition
Chang, Fei1,2; Guo, Jianping1; Wu, Guotao1; Wang, Peikun1,2; Yu, Pei1,2; Chen, Ping1,3,4
关键词Alkali Metal Amide Manganese Nitride Electronic Promotion Ammonia Decomposition
刊名CATALYSIS TODAY
2017-05-15
DOI10.1016/j.cattod.2016.09.010
286页:141-146
收录类别SCI
文章类型Article
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
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.
语种英语
WOS记录号WOS:000399005400016
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150344
专题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
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Chang, Fei,Guo, Jianping,Wu, Guotao,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 Chang, Fei,Guo, Jianping,Wu, Guotao,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 Chang, Fei,et al."Influence of alkali metal amides on the catalytic activity of manganese nitride for ammonia decomposition".CATALYSIS TODAY 286(2017):141-146.
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