文章摘要
尚城城,姚志龙,郭湾,孙培永,张胜红.异丁烯与醋酸酯化合成醋酸叔丁酯[J].精细化工,2019,36(8):
异丁烯与醋酸酯化合成醋酸叔丁酯
Esterification of Acetic Acid with Isobutene to Tert-butyl Acetate
投稿时间:2018-11-23  修订日期:2019-03-11
DOI:
中文关键词: 离子交换树脂  酯化  催化剂  异丁烯  醋酸叔丁酯  复合氧化物
英文关键词: ion exchange resin  esterification  catalyst  isobutene  tert-butyl acetate  composite oxide
基金项目:国家自然科学基金项目(21703012);北京市教育委员会科技计划项目 (KZ 201010017001, KM 201610017003)
作者单位E-mail
尚城城 北京石油化工学院 shangchch@outlook.com 
姚志龙 北京石油化工学院 yaozl@bipt.edu.cn 
郭湾 北京石油化工学院  
孙培永 北京石油化工学院  
张胜红 北京石油化工学院  
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中文摘要:
      以锆复合氧化物和大孔强酸性阳离子交换树脂为催化剂,催化异丁烯与醋酸合成醋酸叔丁酯。采用正丁胺电位滴定法对催化剂的酸强度和酸量进行了表征。结果表明,对异丁烯与醋酸酯化反应而言,随着酸量增加转化率增大,但酸强度增大会导致选择性的下降。以含异丁烯质量分数为10%的混合烃为原料,离子交换树脂为催化剂,异丁烯单程转化率可达80%,醋酸叔丁酯的选择性为95.98%。
英文摘要:
      Esterification of acetic acid with isobutene to tert-butyl acetate catalyzed by zirconium composite oxide and macroporous strong acid cation exchange resin has been investigated. Acid strength and the number of acid site of catalysts were measured by potentiometric titration with n-butylamine. The results show that the conversion of isobu-tene increases with the amount of acid increasing, but the selectivity of tert-butyl acetate decreases with the acid strength increasing. A maximum selectivity for TBA and conversion of isobutene could be achieved at 95.98% and 80% respectively, while hydrocarbon mixture which contains 10% isobutene as feedstock for esterification catalyzed by cation exchange resin.
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