Monolithic catalysts for hydrogenation of nitrobenzene to aniline: influence of aluminum suspension properties

被引：0
|
作者：
Du, Baolei [1 ,2 ,3 ]
Su, Hongjiu [1 ,2 ]
Wang, Shudong [1 ,2 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
[2] Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
来源：
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2015年 / 73卷 / 01期
关键词：
Monolith; Aluminum suspension; Acid site; Nitrobenzene hydrogenation; LIQUID-PHASE HYDROGENATION; MASS-TRANSFER;
D O I：
10.1007/s10971-014-3493-3
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Aluminum suspensions with different properties were prepared and characterized by UV-Vis spectra, BET, XRD and NH3-TPD. A layer of Al2O3 was coated onto the cordierite monolith by sol-gel method. Pd/Al2O3/cordierite monolith catalysts with the same Pd loading and particle size were prepared, and tested by nitrobenzene hydrogenation under solvent-free conditions. The adsorption of nitrobenzene on acid sites might be the primary effect under the reaction conditions, and a good linear relationship between hydrogenation rate and the acid content of the Al2O3 layer was observed. Furthermore, the stronger acid sites were responsible for the lower aniline selectivity.
引用
收藏
页码：48 / 53
页数：6
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