| SO2-4/ZrO2/MCM-41催化合成柠檬酸三丁酯的研究 |
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| 引用本文： | 王富丽,黄世勇,连丕勇. SO2-4/ZrO2/MCM-41催化合成柠檬酸三丁酯的研究[J]. 工业催化, 2009, 17(5): 56-60 |
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| 作者姓名： | 王富丽 黄世勇 连丕勇 |
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| 作者单位： | 1.广西科学院, 广西 南宁530007; 2.辽宁石油化工大学材料化学系，辽宁 抚顺113001 |
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| 基金项目： | 基金项目：广西科学院创新基金资助项目（08YJ16XW01） |
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| 摘 要： | 水热合成了介孔材料MCM-41，并以其为载体负载固体超强酸SO2-4/ZrO2，通过XRD和N2吸附/脱附对制备的SO2-4/ZrO2/MCM-41催化剂进行表征，认为MCM-41负载SO2-4/ZrO2后，仍为长程有序的六方孔道结构。在固定床反应器中，以柠檬酸和正丁醇为原料，研究该催化剂合成柠檬酸三丁酯的活性。对反应条件进行了考察，得出最佳反应条件：温度140 ℃，空速1.0 h-1，醇酸物质的量比为4.5。在此条件下，柠檬酸的酯化率最高可达94.5％。48 h的寿命实验结果表明，该催化剂具有较好的稳定性。
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| 关 键 词： | 有机合成化学 SO2-4/ZrO2/MCM-41 固体超强酸 柠檬酸三丁酯 柠檬酸 正丁醇 |
Synthesis of tributyl citrate over SO4^2-/ZrO2/MCM-41 |
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| WANG Fuli,HUANG Shiyong,LIAN Piyong. Synthesis of tributyl citrate over SO4^2-/ZrO2/MCM-41[J]. Industrial Catalysis, 2009, 17(5): 56-60 |
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| Authors: | WANG Fuli HUANG Shiyong LIAN Piyong |
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| Affiliation: | 1.Guangxi Academy of Sciences, Nanning 530007, Guangxi,China; 2.Department of Material Science，Liaoning Shihua University，Fushun 113001, Liaoning, China |
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| Abstract: | Mesoporous MCM-41 was synthesized via hydrothermal method and used as the carrier for SO4^2-/ZrO2 solid superacid. The SO4^2-/ZrO2/MCM-41 catalysts were characterized by XRD and N2 adsorption/desorption. The characterization results showed that the well-ordered hexagonal array of mesopores in these samples were still sustained. The catalytic activity of SO4^2-/ZrO2/MCM-41 for synthesis of tributyl citrate from n-butyl alcohol and citric acid was investigated in a fixed-bed reaction system. The optimal reaction condition was obtained as follows ： reaction temperature 140 ℃, LHSV 1.0 h^-1, n （ n-butyl alcohol） ： n （ citric acid） = 4.5. Citric acid conversion of 94.5% was obtained under the condition. A 48-hour life test showed that the catalyst had good stability. |
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| Keywords: | organic synthesis chemistry SO4^2-/ZrO2/MCM-41 zeolite solid superacid tributyl citrate citric acid n-butyl alcohol |
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