文献类型：期刊文献

英文题名：Hydrogenolysis of sorbitol to glycols over carbon nanofiber supported ruthenium catalyst

作者：Zhao, L.[1,2]; Zhou, J.H.[2]; Sui, Z.J.[1]; Zhou, X.G.[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 369 Campusbox, Shanghai, 200237, China; [2] Department of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2010

卷号：65

期号：1

起止页码：30

外文期刊名：Chemical Engineering Science

收录：EI(收录号：20095112562919)

语种：英文

外文关键词：Catalyst selectivity - Glycols - Glycerol - Sodium hydroxide - Carbon nanofibers - Hydrogenolysis - Lime - Hydrated lime - Hydrolysis - Ruthenium - Activated carbon

摘要：Sorbitol hydrogenolysis was carried out over a carbon nanofiber supported ruthenium catalyst prepared by incipient wetness impregnation. The carbon nanofiber supported ruthenium catalyst was shown to have an attracting behavior when compared with a commercial activated carbon supported ruthenium catalyst, especially in terms of selectivity to glycols. The preferable hydrogen partial pressure for sorbitol hydrogenolysis was ca. 8.0 MPa, lower than that usually reported in previous works. Slightly soluble calcium hydroxide, which was used as a basic promoter, remarkably increased the selectivity to glycols, as compared with the soluble sodium hydroxide. The variation of product selectivity with catalyst amount indicated that glycerol was the initial C3 polyol product while propylene glycol was derived from glycerol. The parametric investigation was further focused on the intrinsic features of sorbitol hydrogenolysis. ? 2009 Elsevier Ltd. All rights reserved.