| 槽内式间接电解氧化对二甲苯制备对甲基苯甲醛 |
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| 引用本文： | 易清风,刘小平,周秀林,蒋庆来,鲁傲.槽内式间接电解氧化对二甲苯制备对甲基苯甲醛[J].湖南科技大学学报(自然科学版),2006,21(4):88-91. |
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| 作者姓名： | 易清风 刘小平 周秀林 蒋庆来 鲁傲 |
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| 作者单位： | 湖南科技大学,化学化工学院,湖南,湘潭,411201 |
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| 基金项目： | 湖南省自然科学基金资助项目（03JJY6004）;湖南省教育厅青年基金资助项目（038043） |
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| 摘 要： | 首次报道了在一室电解槽中,槽内式间接电解氧化对二甲苯为对甲基苯甲醛的研究.电解液为偏钒酸铵的硫酸水溶液和对二甲苯的混合物.电解时,往阴极表面不断通入氧气,所产生的过氧化氢与V4+组成Fenton试剂,从而高选择性地将对二甲苯氧化为对甲基苯甲醛.电解结果表明,在硫酸浓度10 m ol.L-1,电流密度1.5m A.cm-2,反应温度60℃,反应时间2h,V5+浓度0.4 m ol.L-1以及C TAB浓度0.001 m ol.L-1的条件下,生成对甲基苯甲醛的电流效率为161.9%,反应后的水溶液相可以循环利用.图1,表2,参15.
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| 关 键 词： | 对甲基苯甲醛 对二甲苯 V^5＋/V^4＋ 电对 氧电还原 槽内式 |
| 文章编号： | 1672-9102（2006）04-0088-04 |
| 收稿时间： | 2006-05-19 |
| 修稿时间： | 2006年5月19日 |
"In-Cell" Indirect Electro-oxidation of p-xylene to p-tolualdehyde |
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| YI Qing-feng,LIU Xiao-ping,ZHOU Xiu-lin,JIANG Qing-lai,LU Ao."In-Cell" Indirect Electro-oxidation of p-xylene to p-tolualdehyde[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2006,21(4):88-91. |
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| Authors: | YI Qing-feng LIU Xiao-ping ZHOU Xiu-lin JIANG Qing-lai LU Ao |
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| Abstract: | "In-cell"indirect electro-oxidation of p-xylene to p-tolualdehyde in an undivided cell,where the electrolyte was the mixture of aqueous sulfuric acid solution of NH4VO3 and p-xylene,was carried out for the first time.During electrolysis oxygen gas was continuously bubbled through the cathodic surface to produce H2O2 which then formed Fenton agent with V4+.This kind of Fenton agent can oxidize p-xylene to p-tolualdehyde with high selectivity.Electrolytic experiments showed that the maximum current efficiency was 161.9%.After electrolysis the aqueous phase could be used in cycle.1fig.,2tabs.,15refs. |
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| Keywords: | p-tolualdehyde p-xylene V5+/V4+ couple oxygen electro-reduction in-cell |
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