| 钒钼磷杂多酸催化苯直接羟化为苯酚的动力学研究 |
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| 引用本文： | 张进,罗茜,唐英,谢家庆,胡常伟.钒钼磷杂多酸催化苯直接羟化为苯酚的动力学研究[J].化学研究与应用,2005,17(5):603-606. |
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| 作者姓名： | 张进 罗茜 唐英 谢家庆 胡常伟 |
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| 作者单位： | 四川大学化学学院,绿色化学与技术教育部重点实验室,四川,成都,610064;西昌学院生化系,四川,西昌,615022;重庆文理学院化学与环境科学系,重庆,永川,402168;重庆工学院生物工程学院,重庆,400050 |
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| 基金项目： | 国家自然科学基金资助项目（20072024）;高等学校优秀青年教师教学科研奖励计划资助项目. |
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| 摘 要： | 以钒钼磷杂多酸作为催化剂,用紫外可见分光光度法研究了过氧化氢直接将苯氧化羟基化为苯酚反应的动力学行为。结果表明,该氧化羟化反应速率对底物苯、氧化剂和催化剂都是一级反应,反应的活化能为57.73kJ.mol-1。本文推测了杂多酸配合物催化苯氧化羟化为苯酚反应的过程,建立了该反应动力学数学模型,模型很好地解释了实验结果。
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| 关 键 词： | 动力学 钒钼磷杂多酸 苯羟基化 |
| 文章编号： | 1004-1656（2005）05-0603-04 |
| 收稿时间： | 2004-10-28 |
| 修稿时间： | 2005-06-08 |
Kinetics studies of the direct hydroxylation of benzene to phenol catalysed by vanadium substituted heteropolymolybdates |
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| ZHANG Jin,LUO Qian,TANG Ying,XIE Jia-qing,HU Chang-wei.Kinetics studies of the direct hydroxylation of benzene to phenol catalysed by vanadium substituted heteropolymolybdates[J].Chemical Research and Application,2005,17(5):603-606. |
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| Authors: | ZHANG Jin LUO Qian TANG Ying XIE Jia-qing HU Chang-wei |
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| Institution: | ZHANG Jin~1,LUO Qian~2,TANG Ying~3,XIE Jia-qing~4,HU Chang wei~* |
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| Abstract: | The kinetics of the direct hydroxylation of benzene to phenol using vanadium substituted heteropolymolybdates as catalysts and H_2O_2as oxidant was investigated by means of ultraviolet spectroscopy.It was found that the hydroxylation rate of benzene to phenol indicated first-order dependence with respect to the substrate,to the catalyst and to the oxidant,respectively.The activation energy of the reaction was evaluated to be 57.7kJ mol~(-1).The process and a corresponding mathematic model for the kinetics of thereaction were proposed. |
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| Keywords: | kinetics vanadium substituted heteropolymolybdates hydroxylation of benzene |
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