| 离子液体中V2O5催化环己烯选择氧化合成 2-环己烯酮 |
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| 引用本文： | 陶亮,喻宁亚,李标模,谭蓉,银董红.离子液体中V2O5催化环己烯选择氧化合成 2-环己烯酮[J].催化学报,2007,28(5):474-478. |
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| 作者姓名： | 陶亮 喻宁亚 李标模 谭蓉 银董红 |
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| 作者单位： | 1. 湖南师范大学精细催化合成研究所,湖南长沙,410081;中国科学院广州地球化学研究所,广东广州,510640
2. 湖南师范大学精细催化合成研究所,湖南长沙,410081 |
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| 基金项目： | 教育部留学回国人员科研启动基金(2003(406))，湖南省自然科学基金(01JJY3008). |
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| 摘 要： | 研究了以V2O5为催化剂,H2O2为氧化剂,在室温离子液体中环己烯氧化制备2-环己烯酮的反应.考察了离子液体种类、反应温度、催化剂用量和氧化剂用量等因素对2-环己烯酮产率的影响.结果表明,在H2O2用量为110 mmol,V2O5/环己烯摩尔比为2%,反应温度为313 K的条件下,在bmim]BF4离子液体中反应10 h后,环己烯的转化率和2-环己烯酮选择性分别为88.7%和91.1%.对含离子液体的催化体系的重复使用性能进行了考察.结果发现,随着使用次数的增加,环己烯的转化率以及2-环己烯酮的选择性有所下降.
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| 关 键 词： | 离子液体 五氧化二钒 环己烯 氧化 2-环己烯酮 |
| 文章编号： | 0253-9837（2007）05-0474-05 |
| 修稿时间： | 2006-11-28 |
Selective Oxidation of Cyclohexene to 2-Cyclohexene-1-one Catalyzed by V2O5 in Room-Temperature Ionic Liquids |
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| TAO Liang,YU Ningya,LI Biaomo,TAN Rong,YIN Donghong.Selective Oxidation of Cyclohexene to 2-Cyclohexene-1-one Catalyzed by V2O5 in Room-Temperature Ionic Liquids[J].Chinese Journal of Catalysis,2007,28(5):474-478. |
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| Authors: | TAO Liang YU Ningya LI Biaomo TAN Rong YIN Donghong |
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| Institution: | 1 Institute of Fine Catalysis and Synthesis, Hunan Normal University, Changsha 410081 , Hunan, China ; 2 Guangzhou Institute of Geochemistry, The Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China |
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| Abstract: | 2-Cyclohexene-1-one was synthesized via the oxidation of cyclohexene using V2O5 as the catalyst and H2O2 as the oxidant in room-temperature ionic liquids(RTILs).Compared with the reaction performed in the organic solvent of acetone,higher conversion of cyclohexene and selectivity for 2-cyclohexene1-one were obtained in the solvent of BF4-acetone.The effects of various RTILs,reaction temperature,and the amount of V2O5 and H2O2 on the oxidation were investigated.A conversion of 88.7% with the selectivity for 2-cyclohexene-1-one of 91.1% was obtained when the reaction was carried out in the neutral solvent of BF4-acetone(BF4/acetone volume ratio of 2/5) with 2% of V2O5/cyclohexene molar ratio and 110 mmol of H2O2 at 313 K for 10 h.Furthermore,the ionic liquids could be conveniently recovered for recycle use.The conversion of cyclohexene and the selectivity for 2-cyclohexene-1-one decreased slightly with the increase in the reuse times. |
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| Keywords: | ionic liquid vanadium pentoxide cyclohexene oxidation 2-cyclohexene-1-one |
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