催化乳酸铵酯化的改性树脂的制备与表征  

Preparation and characterization of cation exchange resin loaded ferric for esterification of ammonium lactate

作　　者：赵文军[1,2] 汪群慧[1,3] 滕云[1] 孙晓红[4] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]黑龙江大学建筑工程学院,哈尔滨150086 [3]北京科技大学环境工程系,北京100083 [4]北京农林科学院北京农业生物技术研究中心,北京100097

出　　处：《材料科学与工艺》2010年第1期51-55,共5页Materials Science and Technology

基　　金：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)

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%.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% .

关 键 词：催化剂 酯化反应 乳酸铵 固体超强酸 

分 类 号：TQ203.2[化学工程—有机化工]