全文下载：2012030243
马红， 徐东彦*， 卢鹏， 赵琳， 卢启增
（青岛科技大学 化工学院，山东 青岛 266042）
摘要： 以分子筛ZSM-38为载体，采用浸渍法制备了负载锆基催化剂，将其应用于催化乙酸乙酯的合成。FT-IR、XRD表征及实验结果表明，负载Zr(SO4)2后的催化剂与载体ZSM-38相比具有更多的L酸中心，硫酸锆以非晶态形式高度分散在分子筛表面，表现出了较高的催化性能。当Zr(SO4)2负载量为30%（质量分数），焙烧温度为200℃，乙醇与乙酸的物质的量的比为3∶1，催化剂用量为乙酸质量的4.8%，反应时间2 h条件下，乙酸转化率可达89.6%，乙酸乙酯的选择性接近100%。
关键词： 硫酸锆； 分子筛； 酯化； 固体酸
中图分类号： TQ 426.92文献标志码： A
Preparation and Catalytic Properties of Zr(SO4)2/ZSM-38 Solid Acid Catalysts
MA Hong, XU Dong-yan, LU Peng, ZHAO Lin， LU Qi-zeng
(CollegeofChemical Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)
Abstract: Zr-based catalysts were prepared by an impregnation method with ZSM-38 as the carrier. The products were investigated on their catalytic performance on esterification of acetic acid and ethanol. FT-IR and XRD characterization results showed that the Zr(SO4)2/ZSM-38 catalyst has more L acid sites than those of the ZSM-38 carrier, and zirconium sulfate was homogeneously dispersed on the surface of the molecular sieve by amorphous state. The catalyst exhibited fairly high catalytic activity. The treatment conditions were as follows: m(Zr(SO4)2)/m(catalyst)= 30%, calcined at 200 ℃ for 2 h,m(catalyst)/m(acetic acid)= 4.8 %, n(ethanol)∶n(acetic acid) = 3∶1. Under those conditions, the conversion rate of acetic acid reached up to 89.6% and the selectivity of ethyl acetate approximately 100%.
Key words: zirconium sulfate; molecular sieve; esterification; solid acid
收稿日期：2011-09-14
基金项目：山东省优秀中青年科学家科研奖励基金项目(BS2009CL004).
作者简介：马红（1984—），女，硕士研究生.* 通信联系人.
