| 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.DOI:10.11951/j.issn.1005-0299.20100112. |
| ZHAO Wen-jun,WANG Qun-hui,TENG Yun,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.DOI:10.11951/j.issn.1005-0299.20100112. |
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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%. |
| 关键词: 催化剂 酯化反应 乳酸铵 固体超强酸 |
| DOI：10.11951/j.issn.1005-0299.20100112 |
| 分类号:TQ320.6 |
| 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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| Preparation and characterization of cation exchange resin loaded ferric for esterification of ammonium lactate |
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ZHAO Wen-jun1,2, WANG Qun-hui1,3, TENG Yun1, SUN Xiao-hong4
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1.Dept. of Environmental Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;2.Dept. of Civil Engineering,Heilongjiang University,Harbin 150086,China;3.2. Dept. of Environmental Engineering,Beijing University of Science and Technology,Beijing 100083,China;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% . |
| Key words: catalyst esterification ammonium lactate solid-superacid |
