反相微乳液法制备负载型Pt基催化剂及其选择加氢活性

化工进展

反相微乳液法制备负载型Pt基催化剂及其选择加氢活性

李锋1，宋华1，汪淑影1，程喜全2

1东北石油大学化学化工学院，黑龙江大庆，163318；2哈尔滨工业大学化工学院，黑龙江哈尔滨 150001

出版日期:2011-07-05 发布日期:2011-07-05

Preparation of Pt-based catalyst by reverse microemulsion and its selective hydrogenation performance

LI Feng1，SONG Hua1，WANG Shuying1，CHENG Xiquan2

1School of Chemistry and Chemical Engineering，Northeast Petroleum University，Daqing 163318，Heilongjiang，China；2 School of Chemical Engineering，Harbin Institute of Technology，Harbin 150001，Heilongjiang，China

Online:2011-07-05 Published:2011-07-05

摘要/Abstract

摘要：

采用反相（W/O）微乳液法制备负载型Pt基催化剂，以间氯硝基苯（m-CNB）选择加氢反应为探针，考察微乳液组成、助表面活性剂和油相种类、还原剂用量及载体种类等制备参数对催化剂活性的影响，并对Pt粒子及催化剂进行TEM表征。结果表明：选择十六烷基三甲基溴化胺（CTAB）/正丁醇/环己烷/H₂PtCl₆溶液的W/O微乳体系，m(CTAB)∶m(正丁醇)=3∶7，m(CTAB+正丁醇)∶m(环己烷)=3∶7，H₂PtCl₆溶液含量3.6%，N₂H₄·H₂O用量100 μL时制备的Pt/γ-Al₂O₃催化剂对m-CNB选择加氢活性最高。TEM分析表明催化剂中Pt粒子均匀分散在载体上。

Abstract:

A series of Pt-based catalysts were prepared by reverse microemulsion. The effects of synthesis parameters，such as composition of microemulsion，co-surfactant type，oil phase type，reducing agent dosage，and support type on the catalytic activity of Pt-based catalysts were studied by using m-chloronitrobenzene（m-CNB）selective hydrogenation as a probe reaction. The Pt particle and catalyst were characterized by TEM. The optimum preparation condition for Pt-based catalyst was as follows：microemulsion system of cetyltrimethylammonium bromide（CTAB）/n-butarol/cyclohexane/ H₂PtCl₆ solution with m(CTAB)∶m(n-butarol)=3∶7，m(CTAB+n-butarol)∶m(cyclohexane)=3∶7，H₂PtCl₆ solution content of 3.6%，and N₂H₄·H₂O dosage of 100 μL. Under this condition，the Pt/γ-Al₂O₃ catalyst exhibited the highest catalytic activity in selective hydrogenation of m-CNB. The result of TEM showed that Pt particles dispersed on the surface of support uniformly.

李锋1，宋华1，汪淑影1，程喜全2. 反相微乳液法制备负载型Pt基催化剂及其选择加氢活性 [J]. 化工进展.

LI Feng1，SONG Hua1，WANG Shuying1，CHENG Xiquan2. Preparation of Pt-based catalyst by reverse microemulsion and its selective hydrogenation performance[J]. Chemical Industry and Engineering Progree.