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OALib Journal期刊
ISSN: 2333-9721
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水/二甲基亚砜体系中无机盐高效催化木糖脱水制备糠醛
DOI: 10.1016/S1872-2067(14)60031-0, PP. 741-747
Keywords: 木糖,糠醛,无机盐,氯化锡,氯化锂,二甲基亚砜
Abstract:
？提出了一种高效的均相催化木糖制备糠醛的方法，探讨了水/二甲基亚砜（DMSO）均相体系中不同类型的无机盐对催化木糖制备糠醛的影响.结果表明，氯盐较硫酸盐和硝酸盐表现出较高的催化活性，其中以SnCl4的催化效果最高.且它与LiCl复配时催化性能更高.当SnCl4的摩尔分数为0.8时，催化效果最好，糠醛收率达56.9%.反应条件优化实验发现，当催化剂与木糖的摩尔比为0.5：1，固液比为1：20，水与DMSO体积比为5：5时，于130℃下反应6h，糠醛收率达63%.
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