典型文献
Dinitrogen fixation mediated by lanthanum hydride
文献摘要：
Dinitrogen fixation is one of the key reactions in chemistry,which is closely associated with food,envi-ronment,and energy.It has been recently recognized that the hydride materials containing negatively charged hydrogen(H-)show promises for N2 fixation and hydrogenation to ammonia.Herein,we report that rare earth metal hydrides such as lanthanum hydride can also fix N2 either by heating to 200℃or ball milling under ambient N2 pressure and temperature.The N2 fixation by lanthanum hydride may pro-ceed via an intermediate lanthanum hydride-nitride(La-H-N)structure to form the final lanthanum nitride product.The hydride ion functions as an electron donor,which provides electrons for N2 activa-tion possibly mediated by the lanthanum atoms.It is observed that N-H bond is not formed during the N2 fixation process,which is distinctly different from the alkali or alkaline earth metal hydrides.The hydrol-ysis of La-H-N to ammonia is feasible using water as the hydrogen source.These results provide new insights into the nitrogen fixation by hydride materials and more efforts are needed for the development of rare earth metal-based catalysts and/or nitrogen carriers for ammonia synthesis processes.
文献关键词：
中图分类号：
作者姓名：
Hanxue Yan;Wenbo Gao;Jirong Cui;Weijin Zhang;Qijun Pei;Qianru Wang;Yeqin Guan;Sheng Feng;Han Wu;Hujun Cao;Jianping Guo;Ping Chen
作者机构：
Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Hanxue Yan;Wenbo Gao;Jirong Cui;Weijin Zhang;Qijun Pei;Qianru Wang;Yeqin Guan;Sheng Feng;Han Wu;Hujun Cao;Jianping Guo;Ping Chen-.Dinitrogen fixation mediated by lanthanum hydride)[J].能源化学,2022(09):1-7
A类：
ceed,hydrol
B类：
Dinitrogen,fixation,mediated,by,lanthanum,one,key,reactions,chemistry,which,closely,associated,food,envi,ronment,energy,It,has,been,recently,recognized,that,materials,containing,negatively,charged,show,promises,N2,hydrogenation,ammonia,Herein,we,report,rare,earth,metal,hydrides,such,can,also,either,heating,ball,milling,under,ambient,pressure,temperature,may,via,intermediate,nitride,La,structure,final,product,functions,donor,provides,electrons,activa,possibly,atoms,observed,bond,not,formed,during,distinctly,different,from,alkaline,ysis,feasible,using,water,source,These,results,new,insights,into,more,efforts,needed,development,catalysts,carriers,synthesis,processes
AB值：
0.498388
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