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| 稀土复合固体超强酸SO_4~(2-)/TiO_2/Ce~(4+)催化合成乙酸环己酯及动力学研究 | |
| 引用本文： | 邓斌,梁超伦,陈六平.稀土复合固体超强酸SO_4~(2-)/TiO_2/Ce~(4+)催化合成乙酸环己酯及动力学研究[J].湘南学院学报,2007,28(5):62-66. |
| 作者姓名： | 邓斌 梁超伦 陈六平 |
| 作者单位： | 1. 湘南学院,化学与生命科学系,湖南,郴州,423000 2. 中山大学,测试中心电镜室,广东,广州,10275 3. 中山大学,化学与化学工程学院,广东,广州,510275 |
| 基金项目： | 湖南省教育厅优秀青年科研基金项目(06B089) |
| 摘 要： | 研究了以稀土复合固体超强酸SO42-/TiO2/Ce4+为催化剂合成乙酸环己酯的反应,在反应温度分别为100℃、110℃、120℃下,测出酯化反应的动力学参数,建立了动力学方程,并与无催化剂作用下合成乙酸环己酯反应的活化能及动力学方程进行了比较.实验结果表明,该催化酯化反应的优化合成条件是:乙酸用量为0.262 1mol时,醇酸摩尔比为1.5:1,催化剂用量为1.0g,带水剂环己烷的加入量为12mL.稀土复合固体超强酸SO42-/TiO2/Ce4+可使反应的活化能明显降低,是合成乙酸环己酯的有效催化剂. |
| 关 键 词： | 稀土复合固体超强酸 乙酸环己酯 催化合成 动力学方程 活化能 |
| 文章编号： | 1672-8173（2007）05-0062-05 |
| 修稿时间： | 2007-08-11 |
Synthesis and Its Kinetics of Cyclohexyl Acetate with Rare Earth Composite Solid Superacid SO42-/TiO2/Ce4+ as Catalyst |
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| DENG Bin,LIANG Chao-lun,CHEN Liu-ping.Synthesis and Its Kinetics of Cyclohexyl Acetate with Rare Earth Composite Solid Superacid SO42-/TiO2/Ce4+ as Catalyst[J].Journal of Xiangnan University,2007,28(5):62-66. | |
| Authors: | DENG Bin LIANG Chao-lun CHEN Liu-ping |
| Abstract: | Synthesis of cyclohexyl acetate with rare earth composite solid superacid catalyst of SO2-4/TiO2/Ce4+was investigated.The kinetic parameters of reaction were measured at 100℃,110℃ and 120℃ respectively and the kinetic equation was thus built,which were compared with those of the reaction without catalyst.The results showed that the optimum reaction conditions were as follows: when the dosage of acetic acid was 0.262 1mol,molar ratio of cyclohexanol to acetic acid was 1.5:1,the amounts of the catalyst was 1.0g,the dosage of cyclohexane as water-taking reagent was 12mL.The activation energy of the reaction with solid super acidic catalyst was obviously lower than that of the reaction without catalyst.Suggesting that SO2-4/TiO2/Ce4+ was the effective catalyst for the synthesis of cyclohexyl acetate. |
| Keywords: | rare earth composite solid superacid cyclohexyl acetate catalytic synthesis kinetic equation activation energy |
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