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	担载Fe_2（CO）_9络合物及其分散型Fe催化剂的CO吸脱附和催化作用; Adsorption-Desorption and Hydrogenation of CO on Supported Fe_2(CO)_ 9 Complexes and Dispersed Fe Catalysts
	徐慧珍 ; 过中儒 ; 施介华 ; 王群 ; 汪海有 ; 林种玉
	1995
关键词	担载Fe_2（CO）_9络合物 脱羰基作用 分散型铁催化剂 吸脱附和表面反应 CO加氢反应 Supported Fe_2(CO)_ 9 complexes Decarbonylation Dispersed iron catalysts Adsorption-Desorption and surFace reaction Hydrogenation of CO.
英文摘要	担载于Al_2O_3和zrO_2上的fE_2（CO）_9络合物的羰基在真空中极易脱附，在Ar或H_2中250℃左右也可完全脱羰而成分散型催化剂.以zrO_2为载体者在Ar中低温下易发生表面歧化反应而生成CO_2，高温下生成少量CH_4.吸附于分散型催化剂上的CO在Ar或H_2中均易发生岐化反应，以zrO_2为载体者在H_2中发生加氢反应而生成CH_4，在CO加氢中其反应物除了大量CO_2外还有少量CH物.原位fT-Ir谱表明以zrO_2为载体者在HE中或CO和H_2中均出现相当于多种中间物种的C-H振频带.根据实验结果提出了以zrO_2为载体的fE_2（CO）_9络合物在脱羰基过程中和在CO加氢反应过程中生成CH物种的机理.; The decarbonylation of Fe_2(CO)_ 9 complex supported on Al_2O_3 or ZrO_2,and the adsorptiondesorption and the surFace reaction of CO on the dispersed Fe catalysts derived From the supported complexes have been studied by IR and programmed temperature tech niques.It is Found that the carbonyls of surFace complexes are easily desorbed in vacuum at room temperature.During the TPDE run of supported complexes in Ar or H2 stream, the carbonyls are Fully desorbed at about 250℃.The TPDE products of Fe_2 (CO)_9/ZrO_2 complex in Ar stream are composed mainly of CO2,with less amounts of CO and CH4.The TPDE products of Fe_2(CO)_9/Al_2O_3 complex are composed mainly of CO,with less amount of CO_2.TPD-GC and TPSR-GC profiles show that CO on the supported iron catalysts derived From the Fe_2(CO)_9 complex are very easily decomposed by the disproportionation reaction.It is noticed that CO on the ZrO_2-supported iron catalyst can be hydrogenated to Form hydrocarbons at temperatures above 300℃."In situ"FT-IR spectra show that some bands of C-H stretching Frequencies corresponding to various species appeared du ring the TPDE and CO hydrogenation run of ZrO_2-supported Fe_2(CO)_9 catalyst.The mechanism of CO hydrogenation For the ZrO_2-supported catalyst is proposed.This proposal involves adsorption and dissociation of CO on the catalyst prior to reaction with H_2 to Form CHx and CHO intermediates.In addition,the abilities of adsorption and catalytic reaction For CO on the ZrO_2-supported iron catalyst is higher than that of the A1_2O_3-supported iron catalyst.; 国家自然科学基金
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/106236]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	徐慧珍,过中儒,施介华,等. 担载Fe_2（CO）_9络合物及其分散型Fe催化剂的CO吸脱附和催化作用, Adsorption-Desorption and Hydrogenation of CO on Supported Fe_2(CO)_ 9 Complexes and Dispersed Fe Catalysts[J],1995.
APA	徐慧珍,过中儒,施介华,王群,汪海有,&林种玉.(1995).担载Fe_2（CO）_9络合物及其分散型Fe催化剂的CO吸脱附和催化作用..
MLA	徐慧珍,et al."担载Fe_2（CO）_9络合物及其分散型Fe催化剂的CO吸脱附和催化作用".(1995).

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