改性﹀沸石催化合成乙基叔丁基醚  

SYNTHESIS OF ETHYL TERT-BUTYL ETHER OVER MODIFIED ZEOLITE β

作　　者：李永红[1] 余少兵[1] 张香文[1] 王钰[1] 宋玉兰[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《石油学报（石油加工）》2001年第z1期89-94,共4页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国石油化工集团公司资助项目 (X5 960 40 )

摘　　要：研究了改性 β沸石在合成乙基叔丁基醚 (ETBE)反应中的催化活性 ,反应条件为温度 60～ 90℃ ,压力 2～3 MPa。实验结果表明 ,该反应中异丁烯为关键组分 ,其转化率为 60 %～ 93 .3 % ,选择性为 1 0 0 % ;β沸石独特的孔结构抑制了异丁烯二聚物的生成 ;反应温度和醇烯比是异丁烯转化率的主要影响因素 ,压力对其影响不大。经过高温乙酸水蒸汽处理的 β沸石与 D0 0 5树脂的催化活性相当 ,而The catalytic activity of a modiferd zeolite β was evaluated for the synthesis of ethyl tertbutyl ether(ETBE) in a stainless steel autoclave at temperatures from 60 to 90 ℃ and pressures from 2 to 3 MPa. Isobutene conversions ranged from 60% to 93 3% and the selectivity for ETBE was 100%. Dimer formation was hindered by the unique pore size of zeolite β . Temperature and ethanol to isobutene molar ratio were the significant process variables. Pressure showed no significant effect on isobutene conversion. The activity of modiferd zeolite β for the synthesis of ETBE was the same as that of commercial resin D005, whereas modiferd zeolite β had a higher selectivity for ETBE and was more stable.

关 键 词：乙基叔丁基醚 合成 Β沸石 

分 类 号：TE624.9[石油与天然气工程—油气加工工程] TE624.4