| 催化乳酸铵酯化的改性树脂的制备与表征 |
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| 引用本文： | 赵文军,汪群慧,滕云,孙晓红.催化乳酸铵酯化的改性树脂的制备与表征[J].材料科学与工艺,2010,18(1):51-55. |
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| 作者姓名： | 赵文军 汪群慧 滕云 孙晓红 |
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| 作者单位： | 哈尔滨工业大学市政环境工程学院;黑龙江大学建筑工程学院;北京科技大学环境工程系;北京农林科学院北京农业生物技术研究中心; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2008AA06Z34);;国家“十一五”科技支撑计划项目(2006BAJ04A06) |
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| 摘 要： | 为降低酯化催化剂的制备成本,提高催化酯化反应的性能,以磺酸型阳离子交换树脂和FeCl3·6H2O为原料,采用液固溶剂法制备了固体酸催化剂.利用XRF,FTIR,XRD,NH3-FTIR对催化剂进行表面酸性、元素含量等性质的测试表征.研究表明,FeCl3与阳离子交换树脂的Bronsted酸中心(SO3H)发生化学反应形成了新的Lewis酸中心,络合到树脂上的Fe3+量为11.8%.测试了催化剂促进乳酸铵和正丁醇酯化反应的催化活性,当催化剂用量为1.5%时,酯化率高达96.1%.
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| 关 键 词： | 催化剂 酯化反应 乳酸铵 固体超强酸 |
Preparation and characterization of cation exchange resin loaded ferric for esterification of ammonium lactate |
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| ZHAO Wen-jun,WANG Qun-hui,TENG Yun and SUN Xiao-hong.Preparation and characterization of cation exchange resin loaded ferric for esterification of ammonium lactate[J].Materials Science and Technology,2010,18(1):51-55. |
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| Authors: | ZHAO Wen-jun WANG Qun-hui TENG Yun and SUN Xiao-hong |
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| Affiliation: | 1. Dept. of Environmental Science and Engineering;Harbin Institute of Technology;Harbin 150090;China;2. Dept. of Environmental Engineering;Beijing University of Science and Technology;Beijing 100083;3. Dept. of Civil Engineering;Heilongjiang University;Harbin 150086;4. Beijing Agricultural Biotechnology Centre;Beijing Academy of Agriculture and Forestry Sciences;Beijing 100097;China |
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| Abstract: | To decrease the cost of esterification catalyst and enhance the catalytic activity of esterification,the cation exchange resin catalyst was prepared by liquid-solid solvent method,using sulfoacid cation exchange resin and FeCl3·6H2O as raw materials. Its properties,such as surface acidity and element content,were investigated by XRF,FT-IR,XRD and NH3-FTIR techniques. Results show that FeCl3 reacts with a sulphonate structure of the resin Bronsted acid to form a new Lewis acid center,and the content of Fe3 + in Fe-cation resin is 11. 8% . The catalytic activity for esterification of ammonium lactate with n-butanol was tested. It is found that the highest esterification yield will be up to 96. 1% when the concentration is 1. 5 wt% . |
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| Keywords: | catalyst esterification ammonium lactate solid-superacid |
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