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首页> 外文期刊>Inorganics >Metal-Catalyzed Degradation of Cellulose in Ionic Liquid Media
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Metal-Catalyzed Degradation of Cellulose in Ionic Liquid Media

机译：离子液体介质中纤维素的金属催化降解

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Biomass conversion to 5-hydroxymethylfurfural (HMF) has been widely investigated as a sustainable alternative to petroleum-based feedstock, since it can be efficiently converted to fuel, plastic, polyester, and other industrial chemicals. In this report, the degradation of commercial cellulose, the isomerization of glucose to fructose, and the conversion of glucose to HMF in 1-butyl-3-methylimidazolium chloride ([BMIM]Cl]) using metal catalysts (CrCl 3 , ZnCl 2 , MgCl 2 ) as well as tungsten and molybdenum oxide-based polyoxometalates (POM) were investigated. Tungsten and molybdenum oxide-based POMs in ionic liquids (IL) were able to degrade cellulose to majority glucose and epimerize glucose to mannose (in the case of the molybdenum oxide-based POM). A certain amount of glucose was also converted to HMF. The tungsten oxide-based POM in IL showed good activity for cellulose degradation but the overall products yield remained 28.6% lower than those obtained using CrCl 3 as a catalyst. Lowering the cellulose loading did not significantly influence the results and the addition of water to the reaction medium decreased the product yields remarkably.
机译：生物质向5-羟甲基糠醛（HMF）的转化已被广泛研究为石油基原料的可持续替代品，因为它可以有效地转化为燃料，塑料，聚酯和其他工业化学品。在此报告中，使用金属催化剂（CrCl 3，ZnCl 2，研究了MgCl 2）以及基于钨和氧化钼的多金属氧酸盐（POM）。离子液体（IL）中的基于钨和氧化钼的POM能够将纤维素降解为大部分葡萄糖，并将葡萄糖差向异构体为甘露糖（对于基于氧化钼的POM）。一定量的葡萄糖也被转化为HMF。 IL中基于氧化钨的POM对纤维素降解显示出良好的活性，但总产物收率仍比使用CrCl 3作为催化剂的收率低28.6％。降低纤维素负载量不会显着影响结果，并且向反应介质中添加水会显着降低产物收率。

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