Ce-promoted Ru/SBA-15 catalysts prepared by a "two solvents" impregnation method for selective hydrogenation of benzene to cyclohexene
Ce-promoted Ru/SBA-15 catalysts prepared by a "two solvents" impregnation method for selective hydrogenation of benzene to cyclohexene
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“双溶剂”浸渍法制备Ce助催化的Ru/SBA-15苯选择性加氢制环己烯催化剂
DOI：
10.1016/j.apcata.2008.10.056
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发表时间：
2009-02-01
影响因子：
5.5
通讯作者：
Fan, Kang-Nian
中科院分区：
文献类型：
--
作者：
Liu, Jian-Liang;Zhu, Ling-Jun;Fan, Kang-Nian
采用“双溶剂”浸渍法制备了铈促进的Ru/SBA - 15催化剂。在苯的液相加氢反应中，铈促进的Ru/SBA - 15催化剂表现出比未促进的催化剂更优异的催化性能。确定最佳的体相Ce/Ru摩尔比为0.25，此时环己烯产率达到53.8%。基于表征结果，铈助剂对环己烯选择性的有益影响归因于催化剂亲水性的增强以及Ce(III)物种与金属Ru之间的电子转移。（C）2008爱思唯尔有限公司。版权所有。
Ce-promoted Ru/SBA-15 catalysts were prepared by a "two solvents" impregnation method. In liquid-phase hydrogenation of benzene, the Ce-promoted Ru/SBA-15 catalysts exhibited superior catalytic performance to the un-promoted catalyst. The optimum bulk Ce/Ru molar ratio was determined to be 0.25, at which a cyclohexene yield of 53.8% was obtained. Based on characterizations, the beneficial effect of the Cc promoter on the selectivity to cyclohexene was ascribed to the enhancement of the hydrophilicity of the catalyst and to the electron transfer between the Ce(III) species and metallic Ru. (C) 2008 Elsevier B.V. All rights reserved.