One-step synthesis of methyl isobutyl ketone from acetone with calcined Mg/Al hydrotalcite-supported palladium or nickel catalysts

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题名:	One-step synthesis of methyl isobutyl ketone from acetone with calcined Mg/Al hydrotalcite-supported palladium or nickel catalysts
作者:	Chen,YZ;Hwang,CM;Liaw,CW
贡献者:	化學工程與材料工程學系
关键词:	THERMAL-DECOMPOSITION;BASE CATALYSTS;CONDENSATION
日期:	1998
上传时间:	2010-06-29 17:29:53 (UTC+8)
出版者:	中央大學
摘要:	Calcined Mg/Al hydrotalcites (CHT) with various atomic ratios of Mg/Al were prepared and used as support. One-step synthesis of methyl isobutyl ketone (MIBK) from acetone and hydrogen at atmospheric pressure was investigated over Pd/ CHT and Ni/CHT catalysts. These catalysts showed high activities and high selectivities to MIBK, reaching 60-70% selectivity at 35-40% conversion in some experiments. A temperature of ca. 140 degrees C was sufficiently high for the calcined hydrotalcite-supported catalyst to assume basic properties and good activities in MIBK synthesis. The loading of metal (or the density of metal sites) was an important factor for product distribution in MIBK synthesis. A strong metal-support interaction was exhibited in these catalysts. A higher reduction temperature (>500 degrees C) was needed for Ni/CHT catalysts to assume considerable reactivity and selectivities. The reduction temperature played an important role in the behavior of the Ni/CHT catalysts. (C) 1998 Elsevier Science B.V.
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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