期刊
CATALYSIS COMMUNICATIONS
卷 68, 期 -, 页码 36-40出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2015.04.027
关键词
Si-Al alloy; Core-shell; Pd catalyst; Hydrogenation
资金
- National Science Foundation of China [21276284, 21146008]
- National Science Foundation of Hunan Province [14JJ3016]
Core-shell structured support is an effective way in eliminating mass transfer limitation for multiphase hydrogenation reactions. In this study, a downy Al2O3 layer with a specific surface area of 213.7 m(2)/g was generated in situ on Si-Al alloy via facile hot water etching technique. The downy surface is conducive in achieving a satisfactory dispersion of Pd particles with an average size of 5.5 nm. The core-shell structure and the moderate dispersion of Pd on Si-Al@Al2O3 support lead to a higher activity and selectivity in hydrogenation of styrene and consecutive hydrogenation of phenylacetylene than that on commercial Al2O3. (C) 2015 Elsevier B.V. All rights reserved.
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