离子交换树脂对甲基叔丁基醚的催化水解  

HYDROLYSIS OF METHYL TERT-BUTYL ETHER(MTBE) CATALYZED BY ION EXCHANGE RESIN

作　　者：季必燕[1] 张鑫[2] 顾浩[1] 郑寿荣[1] 许昭怡[1] 

机构地区：[1]南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210093 [2]江苏省淮安市环境监测中心站,淮安223001

出　　处：《环境化学》2008年第4期427-431,共5页Environmental Chemistry

基　　金：国家自然科学基金项目(40402022、20677026);江苏省科技项目(BK2005417、BS2007100);国家科技支撑计划项目(2006BAC02A15)资助

摘　　要：研究了D008离子交换树脂对甲基叔丁基醚(MTBE)的吸附作用,以及H-D008树脂对MTBE水解的催化作用,结果表明,Na-D008及H-D008树脂对MTBE都具有较强的吸附作用,吸附等温线呈直线型.H-D008树脂催化MTBE的水解反应符合一级反应动力学.初始浓度增大,表观一级速率常数基本不变;温度升高,表观一级速率常数增大,当温度为25℃,30℃和35℃时,表观一级速率常数分别为0.067d-1,0.216d-1和0.343d-1.H-D008催化水解MTBE反应的活化能为124.8kJ·mol-1.In this study, methyl tert-butyl ether（MTBE） adsorption over Na-D008 ion exchange resin and hydrolysis over H-D008 resin was investigated. Results showed that both H-D008 and Na-D008 exhibited strong MTBE adsorption, and adsorption of MTBE followed the linear adsorption isotherm. MTBE hydrolysis could be well described by first order kinetics with R^2 of 0. 99. The reaction rate constants were found to be independent on MTBE initial concentrations. The rate constants were 0. 067 d^-1,0. 216 d^-1 and 0. 343 d^-1at 25℃, 30℃ and 35℃, respeetively, indieating that rate eonstants inereased with the inerease of reaetion temperature. Aetivation energy of MTBE hydrolysis over H-D008 was determined to be 124.8 kJ · mol^-1 whieh is relatively low, suggesting that MTBE hydrolysis over H-D008 is easy.

关 键 词：离子交换树脂 甲基叔丁基醚 水解 催化 吸附 

分 类 号：X132[环境科学与工程—环境科学]