| 离子液体催化氧化2,3,6-三甲基苯酚合成2,3,5-三甲基苯醌 |
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| 引用本文： | 王宪沛,杨瑞云,李文,李小安,阎俊,刘卫涛,张辉辉.离子液体催化氧化2,3,6-三甲基苯酚合成2,3,5-三甲基苯醌[J].工业催化,2013,21(8):73-75. |
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| 作者姓名： | 王宪沛 杨瑞云 李文 李小安 阎俊 刘卫涛 张辉辉 |
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| 作者单位： | 西北化工研究院，陕西 西安 710061 |
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| 摘 要： | 研究了离子液体作为助催化剂催化氧化2,3,6-三甲基苯酚合成2,3,5-三甲基苯醌的反应。催化剂CuCl2和MnCl2的用量分别为2,3,6-三甲基苯酚物质的量的10%，助催化剂离子液体1-丁基-3-甲基咪唑四氟硼酸盐用量为2,3,6-三甲基苯酚物质的量的20%，空气中的氧气为氧化剂， 80 ℃反应4 h，转化率100%，选择性92.60%。在后处理过程中，离子液体易于分离和回收利用，为工业合成2,3,5-三甲基苯醌提供了一种较好的选择。
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| 关 键 词： | 精细化学工程 离子液体 氯化铜 氯化锰 2 3 6-三甲基苯酚 2 3 5-三甲基苯醌 |
Ionic liquid catalytic oxidation of 2,3,6-trimethylphenol to 2,3,5-trimethyl-benzoquinone |
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| WANG Xianpei,YANG Ruiyun,LI Wen,LI Xiaoan,YAN Jun,LIU Weitao,ZHANG Huihui.Ionic liquid catalytic oxidation of 2,3,6-trimethylphenol to 2,3,5-trimethyl-benzoquinone[J].Industrial Catalysis,2013,21(8):73-75. |
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| Authors: | WANG Xianpei YANG Ruiyun LI Wen LI Xiaoan YAN Jun LIU Weitao ZHANG Huihui |
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| Affiliation: | Northwest Research Institute of Chemical Industry, Xi’an 710061, Shaanxi, China |
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| Abstract: | Using ionic liquids as the co-catalyst,catalytic oxidation of 2,3,6-trimethylphenol to 2,3,5-trimethyl-benzoquinone under atmospheric oxygen was studied.The results showed that the selectivity to 2,3,5-trimethyl-benzoquinone of 92.6% and 2,3,6-trimethylphenol conversion of 100% were attained under the condition as follows:10mol% copper(Ⅱ) chloride,10mol% manganese(Ⅱ) chloride as the catalyst,20mol% ［Bmim］BF4 as the co-catalyst,atmospheric oxygen as the oxidant,reaction temperature 80 ℃ and reaction time 4 h.Furthermore,the ionic liquid could be easily separated and reused with a slight loss of its activity.It provided a good way for the commercial synthesis of 2,3,5-trimethyl-benzoquinone. |
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| Keywords: | fine chemical engineering ionic liquid copper(Ⅱ) chloride manganese(Ⅱ) chloride 2 3 6-trimethylphenol 2 3 5-trimethyl-benzoquinone |
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