Hydrogenolysis of α-methylbenzyl alcohol over bifunctional catalysts
Hydrogenolysis of α-methylbenzyl alcohol over bifunctional catalysts
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DOI：
10.1016/s0926-860x(02)00347-2
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发表时间：
2003-01-08
影响因子：
5.5
通讯作者：
Lee, SI
中科院分区：
文献类型：
--
作者：
Kwak, BS;Kim, TJ;Lee, SI
为开发无副产物的环氧丙烷（PO）工艺，对烃类过氧化物氧化过程中副产物α-甲基苯甲醇（MBA）的氢解进行了研究。MBA的转化率主要受载体酸度的影响。在所测试的金属中，Pd对于形成Pd（EB）是最活跃和选择性的。MBA的氢化表现出II型选择性，这意味着对主产物的选择性由反应条件和所选择的金属控制。在Pd或Ni上，EB的形成占主导地位，而在Ru或Pt上，1-环己基乙醇（CHE）占主导地位。通过对催化剂的设计和反应条件的选择，可以在副产物少的情况下获得很高的EB产率。在此基础上，提出了双功能反应机理。(C)2002 Elsevier Science B. V.保留所有权利。
Hydrogenolysis of alpha-methylbenzyl alcohol (MBA), a co-product of propylene oxide (PO) in hydrocarbon peroxide oxidation processes, was studied to develop a by-product-free PO process. The conversion of MBA was mainly affected by the acidity of the support. Among the metals tested, Pd was most active and selective for the formation of ethylbenzene (EB). The hydrogenation of MBA exhibited type II selectivity, meaning that the selectivity to main products is controlled by reaction conditions and metals chosen. On Pd or Ni, the formation of EB is predominant while on Ru or Pt, that of 1-cyclohexylethanol (CHE) prevails. By carefully designing the catalyst and selecting the reaction condition, one could obtain a very high yield of EB with only a small amount of side products. Based on the results, a bifunctional reaction mechanism was proposed. (C) 2002 Elsevier Science B.V. All rights reserved.