Hydrogenolysis of 1,2-Propanediol for the Production of Biopropanols from Glycerol
Hydrogenolysis of 1,2-Propanediol for the Production of Biopropanols from Glycerol
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DOI：
10.1002/cssc.201000040
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发表时间：
2010-01-01
期刊：
影响因子：
8.4
通讯作者：
Tomishige, Keiichi
中科院分区：
文献类型：
--
作者：
Amada, Yasushi;Koso, Shuichi;Tomishige, Keiichi
由甘油生产丙醇（称为生物丙醇）需要用于1，2-丙二醇氢解的催化剂，1，2-丙二醇已经容易地衍生自甘油。结果表明，用ReOx修饰的Rh/SiO2催化剂在1，2-丙二醇氢解反应中表现出较高的活性和选择性，且对降解产物的选择性较低，稳定性较高。优化后的Rh-ReOx/SiO2（Re/Rh=0.5）催化剂在1，2-丙二醇氢解反应中具有较高的正丙醇（66%）和丙醇（正丙醇+2-丙醇）（85%）产率。该催化剂适用于甘油一锅法转化为丙醇。Rh金属颗粒与附着的ReOx簇的结构建议从催化剂表征。提出了1，2-丙二醇氢解反应是通过铼上的醇盐物种与铑金属表面上的氢物种的氢解反应进行的。
Production of propanols from glycerol, which are known as biopropanols, requires catalysts for the hydrogenolysis of 1,2-propanediol, which has been easily derived from glycerol. It is found that the Rh/SiO2 catalysts modified with ReOx species exhibited high activity and selectivity in the hydrogenolysis of 1,2-propanediol to propanols with low selectivity to degradation products and high stability. The optimized Rh-ReOx/SiO2 (Re/Rh=0.5) catalyst gave high yields of 1-propanol (66%) and propanols (1-propanol +2-propanol) (85%) in the hydrogenolysis of 1,2-propanediol. In addition, the catalyst was applicable to the one-pot conversion of glycerol to propanols. The structure of Rh metal particles with attached ReOx clusters is suggested from the catalyst characterization. It is proposed that 1,2-propanediol hydrogenolysis proceeds by the hydrogendysis of the alkoxide species on Re with hydrogen species on the Rh metal surface.