催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (4): 365-369.

• 研究论文 • 上一篇    下一篇

茂金属催化乙酸与丁醇酯化反应

许胜1, 李洪彬2, 林秋宁1, 曾繁花1, 沈洁1, 闫修维1, 米普科1   

  1. 1 华东理工大学化学与分子工程学院化学系, 上海 200237; 2 上海交通大学化学与化工学院, 上海 200240
  • 收稿日期:2009-04-25 出版日期:2009-04-25 发布日期:2013-01-21

Esterification of Acetic Acid with n-Butanol Catalyzed by Metallocenes

XU Sheng1,*, LI Hongbin2, LIN Qiuning1, ZENG Fanhua1, SHEN Jie1, YAN Xiuwei1, MI Puke1   

  1. 1Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China; 2School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2009-04-25 Online:2009-04-25 Published:2013-01-21

PDF

1488

被引次数

11

摘要： 以二茂铁、二茂钛、二茂锆和取代茂锆为催化剂用于催化酯化合成乙酸丁酯, 探讨了不同茂金属、反应时间和催化剂用量对反应性能的影响. 结果表明, 低含量的茂金属就可高效催化酯化反应. 当催化剂为二茂钛, 其含量为 0.049%(摩尔比)时, 反应 30 min 产物乙酸丁酯的分离收率达到 90%, 纯度达到 98%. 以 400 目不同温度活化的硅胶为载体, 考察了负载二茂锆催化剂的性能. 当硅胶在 400 ºC 焙烧 4.0 h, 负载二茂锆催化剂用量为 Zr/丁醇 = 0.487% (摩尔比), 反应后乙酸丁酯收率为 90.6%, TOF = 318 h-1. 该反应的产物后处理不需要用水洗涤, 无废水排出, 催化剂易回收利用, 是一个绿色的反应过程.

关键词: 茂金属, 负载型催化剂, 乙酸, 丁醇, 酯化反应

Abstract: The application of Cp2Fe, Cp2TiCl2, Cp2ZrCl2, and [o-MeOC6H4C(Et)2Cp]2ZrCl2 in aliphatic acid esterification was studied. All the complexes are effective catalysts under homogeneous conditions. The silica-supported Cp2ZrCl2 catalyst exhibits high activity and leads to a green process for esterification without wastewater produced.

Key words: metallocene, supported catalyst, acetic acid, n-butanol, esterification