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氨合成反应的BOC-MP法研究; BOC MP Study For Ammonia Synthesis
黑美军 ; 陈鸿博 ; 林贻基 ; 洪琦 ; 林银钟 ; 易军 ; 廖代伟 ; 蔡启瑞
1997
关键词合成氨反应机理 键级守恒莫尔势函数法 铁催化剂 Mechanism For ammonia synthesis Bond order conservation Morse potential (BOC MP) approach Iron catalyst
英文摘要用键级守恒莫尔势函数法(bOC-MP)研究了铁催化剂表面氨合成反应的缔合式和解离式两种机理,计算表明缔合式机理速控步骤的活化能垒n2,Ad+HAd→nHAd+n(92kJMOl-1)低于解离式机理速控步骤nAd+HAd→nHAd(163kJMOl-1)的活化能垒,但反应n2,Ad→nAd+nAd(50kJMOl-1)的活化能垒又明显低于缔合式途径速控步骤的活化能垒.由此可推断,在铁催化剂表面存在着两种氨合成竞争反应途径,但缔合式机理在反应能量学上较为有利.; Both mechanisms of ammonia synthesis, the associative and the dissociative, on iron catalysts are studied with the Bond order conservation Morse potential (BOC MP) approach.The calculations indicated that the activation barrier of the rate(determining step, N 2,ad +H ad NH ad +N ad (92 kJ mol -1 ) For the associative pathway is lower than that of the N ad +H ad NH ad (163 kJ mol -1 ) For the dissociative pathway.Howerver, the activation barrier For reaction, N 2,ad N ad +N ad (50 kJ mol -1 ) is lower more much than that of rate determining step, N 2,ad +H ad NH ad +N ad For the associative pathway.It is shown that there are two competitive reaction pathways For ammonia synthesis on iron catalysts but the associative pathway is more Favorable in catalytic reaction energy.; 国家自然科学基金;福建省自然科学基金;国家教委留学回国人员科研资助
语种zh_CN
内容类型期刊论文
源URL[http://dspace.xmu.edu.cn/handle/2288/107137]  
专题化学化工-已发表论文
推荐引用方式
GB/T 7714
黑美军,陈鸿博,林贻基,等. 氨合成反应的BOC-MP法研究, BOC MP Study For Ammonia Synthesis[J],1997.
APA 黑美军.,陈鸿博.,林贻基.,洪琦.,林银钟.,...&蔡启瑞.(1997).氨合成反应的BOC-MP法研究..
MLA 黑美军,et al."氨合成反应的BOC-MP法研究".(1997).
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