| SO42-/ZrO2固体酸的制备及其对柠檬酸酯化反应的催化性能 |
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| 引用本文： | 廖洋,黄鑫,廖学品,石碧.SO42-/ZrO2固体酸的制备及其对柠檬酸酯化反应的催化性能[J].四川师范大学学报(自然科学版),2012,35(4):551-556. |
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| 作者姓名： | 廖洋 黄鑫 廖学品 石碧 |
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| 作者单位： | 1. 四川大学制革清洁技术国家工程实验室,四川成都610065;四川大学轻纺与食品学院,四川成都610065
2. 四川大学制革清洁技术国家工程实验室,四川成都,610065 |
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| 基金项目： | 国家自然科学基金，新世纪人才支持计划 |
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| 摘 要： | 以皮胶原纤维为模板制备了SO42-/ZrO2固体酸.通过扫描电镜(SEM)、傅里叶红外光谱(FT-IR)、X-射线光电子能谱(XPS)、氨气程序升温脱附(TPD)、X-射线衍射(XRD)、比表面积和孔径分析等对SO42-/ZrO2固体酸的结构和物理性能进行了表征.结果表明,SO42-/ZrO2较完整地保持了胶原纤维的纤维状结构.SO42-在ZrO2的表面进行了配位螯合,形成了固体超强酸.随着热处理温度的升高,SO42-/ZrO2的比表面积和平均孔径下降,其中等强度酸性中心逐渐减弱,直至消失.在柠檬酸的酯化反应中,纤维状结构的SO42-/ZrO2固体酸表现出较高的催化活性,该催化剂具有较好的重复使用性.
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| 关 键 词： | 胶原纤维 模板 SO42-/ZrO2固体酸 酯化反应 |
Preparation of SO42-/ZrO2 Solid Acid Catalyst and Catalytic Activities to the Esterification of Citric Acid |
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| LIAO Yang
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HUANG Xin
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LIAO Xue-pin
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SHI Bi.Preparation of SO42-/ZrO2 Solid Acid Catalyst and Catalytic Activities to the Esterification of Citric Acid[J].Journal of Sichuan Normal University(Natural Science),2012,35(4):551-556. |
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| Authors: | LIAO Yang HUANG Xin LIAO Xue-pin SHI Bi |
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| Institution: | 1(1.National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,Sichuan; 2.Department of Biomass Chemistry and Engineering,Sichuan University,Chengdu 610065,Sichuan) |
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| Abstract: | SO42-/ZrO2 solid acid was synthesized by using collagen fiber as template.The prepared SO42-/ZrO2 were characterized by SEM,FT-IR,XPS,NH3-TPD,XRD and N2 isothermal absorption-desorption method and the esterification of citrate acid with alcohol was carried out as a probe reaction to evaluate the catalytic activity of SO42-/ZrO2.The result shows the fibrous morphology of collagen fiber can be well preserved in the prepared SO42-/ZrO2 and the solid acid is formed for SO42- chelating with ZrO2 on the surface.With the increase of heat treatment temperature,the BET surface area and average pore diameter are gradually decreased.Meanwhile,the medium strong acidic center is disappeared due to the decomposition of SO42- when the heat treatment temperature is too high.The fibrous SO42-/ZrO2 solid acid exhibits high catalytic activity and good reusability for the esterification of citrate acid with alcohol. |
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| Keywords: | collagen fiber template SO42-/ZrO2 solid acid esterification |
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