Selective hydrogenation of phenol to cyclohexanone over palladium supported on calcined Mg/Al hydrotalcite

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题名:	Selective hydrogenation of phenol to cyclohexanone over palladium supported on calcined Mg/Al hydrotalcite
作者:	Chen,YZ;Liaw,CW;Lee,LI
贡献者:	化學工程與材料工程學系
关键词:	CATALYSTS
日期:	1999
上传时间:	2010-06-29 17:29:10 (UTC+8)
出版者:	中央大學
摘要:	Calcined Mg/Al hydrotalcites (CHTs) with various atomic ratios of Mg/Al were prepared and used as supports for palladium catalysts. Selective hydrogenation of phenol to cyclohexanone was investigated over Pd/CHT catalysts and compared with Pd/Al2O3, Pd/SiO2, Pd/CaO-Al2O3 and Pd/MgO. The Pd/CHT(2-4) catalysts showed high reactivities and selectivities to cyclohexanone, reaching 95% selectivity with 40% conversion. For Pd/CHT(2-4) catalysts, the calcined hydrotalcites exhibit strong base sites that were more effective than acid sites to affect the selectivity of cyclohexanone. The 0.3%Pd/CHT(2) catalyst was a good candidate for one-step process of cyclohexanone formation. On it the reaction orders of rate were found to be 2 with respect to the hydrogen pressure and -1 with respect to the partial pressure of phenol. (C) 1999 Elsevier Science B.V. All rights reserved.
關聯:	APPLIED CATALYSIS A-GENERAL
显示于类别:	[化學工程與材料工程研究所] 期刊論文

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