Production of Biobutanediols by the Hydrogenolysis of Erythritol
Production of Biobutanediols by the Hydrogenolysis of Erythritol
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DOI：
10.1002/cssc.201200121
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发表时间：
2012-01-01
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;Watanabe, Hideo;Tomishige, Keiichi
赤藓糖醇在IrReOx/SiO_2催化剂上氢解可制得丁二醇，丁二醇是一种广泛用于合成聚合物的原料。与常规氢解催化剂相比，IrReOx/SiO_2催化剂具有更高的丁二醇活性和选择性。当转化率为74%时，1，4-丁二醇和1，3-丁二醇的最大选择性分别达到33%和12%。如果在反应中加入少量的酸并再次焙烧，赤藓糖醇的转化率和丁二醇的选择性在四次重复试验中几乎保持不变。反应动力学、反应趋势和表征结果表明，金属Ir表面的氢化物物种攻击了3DReOx团簇上的醇盐物种，这是一种直接氢解机理。在葡萄糖和甘油发酵生产赤藓糖醇的基础上，赤藓糖醇氢解可能是生产生物丁二醇的一条很有前途的途径。
The hydrogenolysis of erythritol using an IrReOx/SiO2 catalyst was performed for the production of butanediols, which are widely used as a raw material of polymers. The activity and selectivity to butanediols on IrReOx/SiO2 was much higher than that on conventional hydrogenolysis catalysts. The maximum selectivity to 1,4- and 1,3-butanediols reached 33 and 12?% at 74?% conversion, respectively. The erythritol conversion and selectivity to butanediols was almost maintained during four repeating tests if small amounts of acid were added to the reaction and the catalyst was calcined again. The reaction kinetics, reactivity trends, and characterization results indicate a direct hydrogenolysis mechanism in which the hydride species on the Ir metal surface attacks the alkoxide species on the 3D ReOx clusters. Based on the production of erythritol by the fermentation of glucose and glycerol, erythritol hydrogenolysis may be a promising pathway for the production of biobutanediols.