Selective Phenol Hydrogenation to Cyclohexanone Over a Dual Supported Pd-Lewis Acid Catalyst

doi:10.1126/science.1179713

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	Selective Phenol Hydrogenation to Cyclohexanone Over a Dual Supported Pd-Lewis Acid Catalyst
	Liu, Huizhen; Jiang, Tao; Han, Buxing; Liang, Shuguang; Zhou, Yinxi
刊名	SCIENCE
	2009-11-27
卷号	326 期号:5957 页码:1250-1252
ISSN号	0036-8075
DOI	10.1126/science.1179713
英文摘要	Cyclohexanone is an industrially important intermediate in the synthesis of materials such as nylon, but preparing it efficiently through direct hydrogenation of phenol is hindered by over-reduction to cyclohexanol. Here we report that a previously unappreciated combination of two common commercial catalysts. nanoparticulate palladium (supported on carbon, alumina, or NaY zeolite) and a Lewis acid such as AlCl(3-)synergistically promotes this reaction. Conversion exceeding 99.9% was achieved with >99.9% selectivity within 7 hours at 1.0-megapascal hydrogen pressure and 50 degrees C. The reaction was accelerated at higher temperature or in a compressed CO(2) solvent medium. Preliminary kinetic and spectroscopic studies suggest that the Lewis acid sequentially enhances the hydrogenation of phenol to cyclohexanone and then inhibits further hydrogenation of the ketone.
语种	英语
出版者	AMER ASSOC ADVANCEMENT SCIENCE
WOS记录号	WOS:000272117900044
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/66237]
专题	中国科学院化学研究所
通讯作者	Jiang, Tao
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Huizhen,Jiang, Tao,Han, Buxing,et al. Selective Phenol Hydrogenation to Cyclohexanone Over a Dual Supported Pd-Lewis Acid Catalyst[J]. SCIENCE,2009,326(5957):1250-1252.
APA	Liu, Huizhen,Jiang, Tao,Han, Buxing,Liang, Shuguang,&Zhou, Yinxi.(2009).Selective Phenol Hydrogenation to Cyclohexanone Over a Dual Supported Pd-Lewis Acid Catalyst.SCIENCE,326(5957),1250-1252.
MLA	Liu, Huizhen,et al."Selective Phenol Hydrogenation to Cyclohexanone Over a Dual Supported Pd-Lewis Acid Catalyst".SCIENCE 326.5957(2009):1250-1252.