脂肪酶催化脂肪醇乙氧基化研究  

Study on Ethoxylation of Fatty Alcohol Catalyzed by Lipase

作　　者：张纪梅[1] 步月华[1] 贾莉伟[1] 朱春华[1] 

机构地区：[1]天津工业大学材料化工学院,天津300160

出　　处：《化学通报》2006年第2期144-147,共4页Chemistry

基　　金：天津市科委自然科学基金资助项目(013617511)

摘　　要：考察了几种生物酶作为脂肪醇乙氧基化催化剂的催化活性。实验发现脂肪酶在乙二醇存在的条件下,能使环氧乙烷开环聚合生成脂肪醇聚氧乙烯醚。采用磷酸裂解实验对产品进行了初步检验,然后进行减压蒸馏,对各馏分进行红外光谱实验,初步证实了产品的结构。采用柱色谱对混合聚醚进行分离,分离后的组分用核磁共振谱进行分析,证实脂肪酶确实使环氧乙烷开环生成了聚醚,混合产物中,聚氧乙烯醚的量约为42%。Ethoxylation of n-octanol catalyzed by a few of enzymes were stndied and the results showed that only lipase with glycol has a certain catalytie activity, The existence of products was examined by the method of splitting decomposition of phosphoric-acid test, FT-IR absorption spectrum and NMR spectrometry. The products were composed of noctanol ethoxylates（42% ）,pdyethylene glycol （51.2%） and a little raw material.

关 键 词：乙氧基化 生物酶 脂肪酶 正辛醇 聚氧乙烯醚 

分 类 号：O643.32[理学—物理化学] TQ423.2[理学—化学]