期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 17, 期 2, 页码 316-320出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2011.02.030
关键词
Hydrogenation; Succinic acid; gamma-Butyrolactone; Alumina xerogel; Acid density
资金
- Korea Ministry of Environment [202-091-001]
Mesoporous alumina xerogel (AX) supports prepared by a sol-gel method were calcined at various temperatures to control their acid property. Palladium catalysts supported on mesoporous alumina xerogel (Pd/AX) were then prepared by an impregnation method. The Pd/AX catalysts were characterized by XRD, BET, NH3-TPD, N-2 adsorption-desorption isotherm, and H-2 chemisorption analyses. Liquid-phase hydrogenation of succinic acid to gamma-butyrolactone (GBL) over Pd/AX catalyst was carried out in a batch reactor. The effect of acid property of Pd/AX catalyst on the catalytic performance was examined. In the hydrogenation of succinic acid, conversion of succinic acid and yield for GBL showed volcano-shaped curves with respect to calcination temperature of AX support. Selectivity for succinic anhydride (an intermediate product formed by acid catalysis) increased with increasing acid density of Pd/AX catalyst. Correlations between acid density of Pd/AX catalyst and catalytic performance also revealed that conversion of succinic acid and yield for GBL increased with increasing acid density of Pd/AX catalyst. Thus, acid density served as an important factor determining the catalytic performance of Pd/AX in the hydrogenation of succinic acid. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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