第 41 卷第 1 期Vol. 41 No. 1
2011 年 2 月Feb 2011

所属栏目:染料、颜料及涂料

固体超强酸SO42-/ZrO2催化合成乙二醇乙醚醋酸酯
乔艳辉,张 庆,韦其技 (广东石油化工学院 化学与生命科学学院,广东 茂名 525000)
摘 要:在固体超强酸SO42-/ZrO2催化下,以乙二醇单乙醚和冰醋酸为原料,合成了乙二醇乙醚醋酸酯。考察了催化剂用量、物料配比、反应时间、带水剂等因素对反应的影响。实验结果表明,固体超强酸SO42-/ZrO2对合成乙二醇乙醚醋酸酯有着良好的催化活性,在催化剂用量为反应物料总质量的2%,乙二醇单乙醚9.01 g,n(乙二醇单乙醚)∶n(冰醋酸)=1∶3,回流时间2.5 h,带水剂环己烷用量为17 mL的条件下产品收率达95.8%,且催化剂重复使用5次仍保持较高活性。产品经红外、气质进行定性分析,确定结构为乙二醇乙醚醋酸酯。
关键词:固体超强酸SO42-/ZrO2;催化合成;乙二醇乙醚醋酸酯
中图分类号:TQ223.2  文献标识码:A  文章编号:1009-9212(2011)01-0045-04
Catalytic Synthesis of 2-Ethoxyethyl Acetate by Solid Superacid SO42-/ZrO2
QIAO Yan-hui,ZHANG Qing,WEI Qi-ji (School of Chemistry and Life Science,Guangdong University of Petrochemical Technology,Maoming 525000, China)
Abstract:2-Ethoxyethyl acetate was synthesized from ethylene glycol monoethyl ether and acetic acid under catalysis of solid superacid SO42-/ZrO2 . The influence of reaction conditions such as dosage of catalyst,ratio of acid to alcohol, time and water stripping agent on yield were investigated. The results showed that solid superacid SO42-/ZrO2 exhibited excellent catalytic activity. Under the optimal conditions 2-ethoxyethyl acetate was obtained in 95.8% yield. The catalyst can be recycled for five times without significant yield declining. IR and GC-MS were used for structure identification.
Key words:solid superacid SO42-/ZrO2;catalytic synthesis;2-ethoxyethyl acetate
基金项目:茂名市重点科技计划项目(10A18)。
作者简介: 乔艳辉(1978-),女,河南新乡人,硕士,主要从事精细有机合成及工业催化方面的研究。(E-mail:qiaoyanhui@sina.com)
收稿日期:2011-02-1