合成乙二醇单乙醚用ZSM-5催化剂的NH_4F改性研究  

STUDY ON NH_4F MODIFICATION OF ZSM-5 CATALYST FOR SYNTHESIS OF ETHYLENE GLYCOL MONOETHYL ETHER

作　　者：崔凤霞[1] 李军[1] 魏秀萍[1] 曾广俊 张立群[1] 

机构地区：[1]天津石化公司研究所,天津300271

出　　处：《精细石油化工》2003年第1期29-31,共3页Speciality Petrochemicals

摘　　要：用无缓冲溶液NH4F法对合成乙二醇单乙醚用的ZSM 5沸石分子筛催化剂进行了改性 ,采用正交实验法考察了处理条件对催化剂反应性能的影响。结果表明 ,适宜的改性条件如下 :溶液 pH =5 ,溶液加入量 =催化剂体积的 5倍量 ,加料速度 15 0mL/h ,溶液浓度 0 .5mol/L ,处理温度 90～ 95℃ ,处理时间 6～ 8h。乙二醇单乙醚的选择性和单醚收率分别为 >80 %和 >79%。The ZSM-5 zeolite molecular sieve catalyst for preparing ethylene glycol monoethyl ether (EGMEE) was modified by NH_4F without buffer solution, and the modification conditions were investigated by orthogomal experiments. The optimum conditions were found as follows: about the NH_4F solution, pH=5, amount=5×volume of catalyst, concentration 0.5 mol/L, feeding speed 150 mL/h; about the treating condition, temperature 9095 ℃, and time 68 h. The selectivity and yield of EGMEE are >80% and >79% respectively.

关 键 词：合成 乙二醇单乙醚 ZSM-5催化剂 NH4F 改性 研究 ZSM-5沸石 氟化铵 

分 类 号：TQ223.24[化学工程—有机化工] TQ426.94