南京理工大学学报（自然科学版）2011，Vol.35Issue(1)：122-126,5.
固体碱催化剂KF/Al2O3催化合成乙二醇丁醚
Synthesis of Ethylene Glycol Monobutyl Ether with KF/Al2O3 Solid Base Catalyst
摘要
Abstract
In order to solve the problems that the traditional catalysts are dealt in difficult and polluted environments in ethylene glycol monobutyl ether production, the KF/Al2O3 solid base catalysts are prepared via impregnation method and their catalytic properties for the etherification to synthesize ethylene glycol monobutyl ether from ethylene oxide(EO) and butanol are evaluated.The influences of loading amount of KF over Al2O3 support, calcinate temperature of catalysts are examined.The results indicate that the catalyst possesses the best catalytic activity under the conditions of catalyst calcinate temperature 600 ℃ and 30％ of loading amount of KF.The catalysts are characterized by means of X-ray diffraction( XRD)and surface alkalinity are determined by Hammett indicator method.The results show that its base strength is higher than 18.4 and the base amount(pKa＞9.3)is 3.0 mmol/g Cat.The optimal etherification condition is as follows: reaction temperature 110℃, pressure O.20 ～0.30 MPa,reaction time 100 ～ 120 min,w(catalyst)= O.5％ and n(BuOH) :n( EO)= 5:1.Under such reaction conditions,the conversion of EO reaches 99.47％.关键词
固体碱催化剂/制备/乙二醇丁醚/表征/合成Key words
solid base catalysts/ preparation/ ethylene glycol monolutyl ether/ characterization/ Synthesis分类
化学化工引用本文复制引用
郭登峰,刘红,刘准,曹惠庆,赵文,石兆君..固体碱催化剂KF/Al2O3催化合成乙二醇丁醚[J].南京理工大学学报（自然科学版）,2011,35(1):122-126,5.基金项目
国家自然科学基金(20671045) （20671045）
