硅藻土负载Co-Fe肉桂醛选择加氢催化剂的制备与表征.pdf
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2009
2009年5月 工业催化 May
第17卷第5期 INDUSTRIALCATALYSIS V01.17No.5
硅藻土负载Co—Fe肉桂醛选择加氢
催化剂的制备与表征
李万伟h,刘自力2,李敏1
摘要:以内桂醛选择性加氢制肉桂醇为探针反应,通过制备不同Fe含量的Co—Fe/硅藻土催化
剂并进行催化性能评价。结合XRD、SEM和正电子寿命谱等进行表征,结果表明,Fe对Co,O。晶体
的完整程度产生影响,导致晶体缺陷数增加。Fe引入使活性助分在载体硅藻土表面分散性更好,
分散的单层性明显,负载在硅藻土上催化剂的晶粒粒径也有变小趋势。
关键词:催化化学;Co—Fe/硅藻土催化荆;肉桂醛;选择加氢;催化剂表征
143.2009.05.006
doi:10.3969/j.issn.1008·1
文献标识码:A
中图分类号:0643.36;TQ426.82
andcharacterizationofCo-Fe/diatomite
Preparation catalysts
for selective
cinnamaldehydehydrogenation
Minl
L/Wanweih,UUZili2,LI
of andChemical
(1.DepartmentChemistry Engineering,HuaihuaCollege,Haihua418008,Hunan,China;
2.Schoolof andChemical
Chemistry Engineering,GuangzhouUniversity,Guangdong
withdifferentFecontentwere andtested cinnamal—
Abstract:Co·Fe/diatomite
catalysts prepared using
selective to alcoholasthe reaction.Thewerecharacter-
dehyde hydrogenationcinnamyl probe catalysts
izedXRD.SEMand annihilation.TheresultsindicatedthatFeaffectedthe of
by positron perfectness
andledtOincreasein defects.IntroductionofFe ofactive
C0304crystals crystal improveddispersion
onthesurfaceof of ofthe and
diatomite,increasedsingle
components proportion layerdispersioncrystals
reducedsize
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