Catalytic Performance of Ba-Modified Pd/Al2O3 for Liquid Phase in Situ Hydrogenation of Phenol to Cyclohexanone

被引：0

作者：

Wang Hongjing ^{[1
]}

Xiang Yizhi ^{[1
]}

Xu Tieyong ^{[1
]}

Zhou Hanjun ^{[1
]}

Ma Lei ^{[1
]}

Li Xiaonian ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Ind Catalysis Inst, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310032, Zhejiang, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2009年 / 30卷 / 09期

关键词：

barium; palladium; alumina; supported catalyst; phenol; hydrogenation; cyclohexanone; SUPPORTED PALLADIUM CATALYSTS; BIOMASS-DERIVED HYDROCARBONS; SELECTIVE HYDROGENATION; PD; DERIVATIVES; PRECURSORS; CARBON; CE;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of Pd/Al2O3 catalysts modified by different metals were prepared by the incipient wetness impregnation method. With liquid phase in-situ hydrogenation of phenol to cyclohexanone as a model reaction, their catalytic performance was measured. The results indicated that Ba-Pd/Al2O3 had higher catalytic activity for the reaction. When w(Ba) = 3%, the phenol conversion on Ba-Pd/Al2O3 was 3 times that on Pd/Al2O3. The phenol conversion reached 100% and the cyclohexanone yield was Lip to 80% under the optimal conditions. TEM (transmission electron microscopy), CO chemisorption, XRD (X-ray diffraction), N-2 adsorption-desorption, and CO2-TPD (temperature-programmed desorption) were employed to characterize the physicochemical properties of Ba-Pd/Al2O3. The results Suggested that the presence of Ba increased the Pd dispersion and enhanced the basicity of the catalyst surface. Therefore, Ba-Pd/Al2O3 was an effective catalyst for liquid phase in-situ hydrogenation of phenol to cyclohexanone.

引用

页码：933 / 938

页数：6

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