钛硅沸石催化C_3H_6和H_2O_2合成丙二醇单甲醚反应条件的研究  

SYNTHESIS OF PROPYLENE MONOMETHYL ETHERS BY EPOXIDATION OF PROPYLENE WITH DILUTE HYDROPEROXIDE OVER TS-1/SiO_2 CATALYST

作　　者：闫海生[1] 刘靖[1] 王祥生[1] 李钢[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116012

出　　处：《石油学报（石油加工）》2001年第z1期59-65,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金委;中国石油化工集团公司联合资助项目 (重大项目编号 2 9792 0 71)

摘　　要：在加压固定床反应器上 ,将钛硅沸石和 Si O2 混合制备的 TS-1 /Si O2 催化剂 ,用于 H2 O2 、 C3H6 及甲醇反应制备丙二醇单甲醚 (MME)。考察了反应温度、操作压力、原料中 H2 O2 浓度、H2 O2 与 C3H6 的摩尔比、进料总空速、空塔线速等反应参数对该催化剂催化性能的影响 ,找到了较佳的操作条件。实验结果表明 ,当反应温度 60℃ ,操作压力 3 .0 MPa,H2 O2 浓度 0 .85mol/l,H2 O2 与 C3H6 的摩尔比 1∶ 4 .1 7,液相进料总质量空速 3 .3 6h- 1 ,空塔线速 4 3 .74× 1 0 - 2 m/h时 ,MME的选择性达到 91 .3 5% ,H2 O2 有效利用率达 94 .3 7% ,H2 O2 转化率达 98.2 6% ,C3H6 实际转化率达 2 2 .2 4 % (此时 C3H6 理论转化率为 2 3 .98% )The reaction of propylene with H 2O 2 and CH 3OH to prepare propylene monomethyl ether was carried out by using a fixed bed reactor with TS 1/SiO 2 as the catalyst which was prepared by mixing TS 1 as the main catalyst and SiO 2 as the carrier followed by extrudating, exsiccating and incinerating. The effect of reaction conditions on catalytic properties was studied. Results showed that under temperature of 60 ℃, pressure of 3 0 MPa, H 2O 2 concentration of 0 85 mol/l, n (C 3H 6)/ n (H 2O 2) of 10, total MHSV of 3 36 h -1 , and linear velocity of 43 74×10 -2 m/h, the selectivity of monomethyl ethers(MME) was up to 91 35%, the H 2O 2 utilization was up to 94 37%, and the conversion of H 2O 2 and propylene up to 98 26% and up to 22 24% (the theoretic conversion of propylene is 23 98%), respectively

关 键 词：TS-1/SiO2催化剂 丙二醇单甲醚 加压固定床反应器 

分 类 号：O643.32[理学—物理化学]