详细信息
可溶性铜盐配合物Cu(OH)_4^(2-)氧化扁桃酸制备香兰素
Oxidation of Mandelic Acid to Prepare Vanillin by a Soluble Cu(OH)_4^(2-) Complex
文献类型:期刊文献
中文题名:可溶性铜盐配合物Cu(OH)_4^(2-)氧化扁桃酸制备香兰素
英文题名:Oxidation of Mandelic Acid to Prepare Vanillin by a Soluble Cu(OH)_4^(2-) Complex
作者:钮东方[1];徐思涵[1];李辉成[1];张新胜[1]
机构:[1]华东理工大学化学工程联合国家重点实验室,上海200237
年份:2014
卷号:31
期号:11
起止页码:1372
中文期刊名:精细化工
外文期刊名:Fine Chemicals
收录:CSTPCD;;Scopus;北大核心:【北大核心2011】;CSCD:【CSCD2013_2014】;
语种:中文
中文关键词:扁桃酸;香兰素;铜盐配合物;氧化
外文关键词:mandelic acid ; vanillin ; Cu ( II ) complex ; oxidation
摘要:以可溶性铜盐配合物Cu(OH)2-4作为氧化剂,选择性氧化扁桃酸制备香兰素。当二价铜盐Cu SO4·5H2O与扁桃酸的摩尔比值为2.5,体系p H=13.5,温度为95℃,反应时间为8 h,香兰素收率可达95.6%。二价铜盐在H2SO4溶液中由H2O2氧化Cu2O再生,再生后的二价铜盐的活性无明显下降,10次循环后香兰素的收率仍可达95.4%。
Mandelic acid was oxidized into vanillin by utilizing a soluble Cu(II) complex. When the molar ratio of CuSO4.5H2O to mandelic acid was 2.5, pH value was 13.5, reaction temperature was 95℃ and reaction time was 8 h, the oxidation yield reached 95.6%. The copper (II) salt can be efficiently recovered in H2SO4 solution by the oxidation of Cu2O in the presence of H2O2, and the activity of the regenerated copper (II) salt has no significant decrease. The yield of vanillin had almost no change each time, and kept at about 95.4% after ten cycles.
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