β沸石上合成甲基叔丁基醚反应动力学研究  

KINETICS FOR SYNTHESIS OF METHYL tert-BUTYL ETHER OVER β ZEOLITE

作　　者：王莅[1] 古玲[1] 李永红[1] 马忠龙[1] 陈洪钫[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2001年第6期815-818,共4页Journal of Tianjin University：Science and Technology

基　　金：中国石油化工总公司资助项目 (X5960 4 0 )

摘　　要：水热改性 β沸石为催化剂研究了甲醇和异丁烯醚化反应动力学 ,结合 TPD技术探讨了反应机理 .结果表明 ,反应物和产物在催化剂上的吸附均为中等强度的化学吸附 ;正反应对甲醇和异丁烯浓度分别是零和一级 ,逆反应对产物浓度是一级 .The kinetics for synthesis of methyl tert butyl ether(MTBE) over β zeolite was measured. The mechanism of the synthesis for MTBE is proposed based on the adsorptive states of reactants and product over the zeolite. The results show that the forward reaction is zero order in methanol and one order in isobutene while the reverse reaction is one order in MTBE. The reaction of methanol and isobutene over the zeolites takes place according to the L H mechanism and the rate determining step is the reaction of adsorbed methanol with adsorbed isobutene.

关 键 词：化学反应动力学 甲基叔丁基醚 醚化反应 Β沸石 催化剂 反应机理 汽油添加剂 

分 类 号：TQ223.24[化学工程—有机化工] TE624.81[石油与天然气工程—油气加工工程]