| 锆交联累托土制备及其用于催化合成柠檬酸三丁酯的研究 |
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| 引用本文： | 秦国平,郭锡坤,孙长勇,林绮纯. 锆交联累托土制备及其用于催化合成柠檬酸三丁酯的研究[J]. 天然气化工, 2002, 27(6): 20-24 |
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| 作者姓名： | 秦国平 郭锡坤 孙长勇 林绮纯 |
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| 作者单位： | 汕头大学化学系,广东汕头,515063 |
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| 基金项目： | 广东省教育厅自然科学研究项目，汕头大学工业催化“2 11工程”建设项目，汕头大学研究与发展基金资助 |
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| 摘 要： | 制备了锆交联累托土Zr CLR、SO4 2 -/Zr CLR。采用XRD、IR、TGA和DTA等分析手段对催化剂进行表征 ,并将其应用于催化合成TBC。结果表明 ,锆交联使得累托土的d0 0 1增大了 0 4 12nm ,结构坍塌的温度提高了 86℃ ,SO4 2 -的引入使得催化剂在 5 0 0℃焙烧时出现了SO4 2 -/ZrO2 螯合双配位的固体酸结构。在TBC的合成中 ,SO4 2 -/Zr CLR显示出良好的催化活性和稳定性 ,转化率达到 95 6 3%,反复使用 5次活性仅下降了 4 17%。
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| 关 键 词： | 交联累托土 固体酸 柠檬酸三丁酯 |
| 文章编号： | 1001-9219(2002)06-20-04 |
| 修稿时间： | 2002-06-09 |
Preparation of SO42-/Zr-CLR and its catalytic properties in the synthesis of tri-n-butyl citrate |
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| QIN Guo-ping,GUO Xi-kun,Sun Chang-yong,LIN Qi-chun. Preparation of SO42-/Zr-CLR and its catalytic properties in the synthesis of tri-n-butyl citrate[J]. Natural Gas Chemical Industry, 2002, 27(6): 20-24 |
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| Authors: | QIN Guo-ping GUO Xi-kun Sun Chang-yong LIN Qi-chun |
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| Abstract: | Zr cross-linked rectorite catalysts(Zr-CLR) and their SO 4 2- improvevs (SO 4 2- /Zr-CLR) were prepared and characterized by means of XRD?IR?TGA and DTA. The results showed that, compared with uncross-linked rectorite, the Zr-CLR had larger basal spacing(△d 0.01 =0.412nm) and higher collapsing temperature(△T=86℃),and the chelating ligand structure of solid acid(SO 4 2- /ZrO 2) had appeared in SO 4 2- /Zr-CLR calcinated at 500℃. SO 4 2- /Zr-CLR exhibited high activity and good stability in the synthesis of TBC. It made the conversion of citric acid up to 95.63% and only decreased by 4.17% after five runs. |
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| Keywords: | cross-linked rectorite solid acid tri-n-butyl citrate |
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