催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (7): 607-610.

• 研究论文 • 上一篇    下一篇

超临界二氧化碳中PdCl2/聚苯乙烯负载苯酚共催化缩醛化反应

汪朝阳1,2,江焕峰1,戚朝荣1,申艳霞1,杨少容1,曾育才1   

  1. 1 华南理工大学化学科学学院, 广东广州 510640; 2 华南师范大学化学与环境学院化学系, 广东广州 510006
  • 收稿日期:2007-07-25 出版日期:2007-07-25 发布日期:2011-07-25

PdCl2/PS-Phenol Co-catalyzed Acetalization of Methyl Acrylate with Methanol in Supercritical Carbon Dioxide

WANG Zhaoyang1,2, JIANG Huanfeng1,*, QI Chaorong1, SHEN Yanxia1, YANG Shaorong1, ZENG Yucai1   

  1. 1 College of Chemistry, South China University of Technology, Guangzhou 510640, Guangdong, China; 2 Department of Chemistry, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, Guangdong, China
  • Received:2007-07-25 Online:2007-07-25 Published:2011-07-25

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摘要： 在超临界二氧化碳中和氧气存在的条件下,将PdCl2/高分子聚苯乙烯负载苯酚(PS-Phenol)共催化剂成功地应用于丙烯酸甲酯与甲醇的缩醛化反应中. 当丙烯酸甲酯全部转化时,缩醛化产物3,3-二甲氧基丙酸甲酯的最佳产率和选择性分别为97.7%和100%. 与小分子酸性助催化剂相比, PS-Phenol可以通过简单的过滤分离而循环再利用,这有利于贵金属钯的分离与回收.

关键词: 氯化钯, 聚苯乙烯, 负载催化剂, 苯酚, 丙烯酸甲酯, 甲醇, 缩醛化, 3-二甲氧基丙酸甲酯, 超临界二氧化碳

Abstract: PdCl2/polystyrene-supported phenol (PS-Phenol) was presented as a co-catalyst for the acetalization of methyl acrylate with methanol in supercritical carbon dioxide under oxygen atmosphere. After methyl acrylate was completely converted, the highest yield and selectivity for methyl3,3-dimethoxypropanoate were 97.7% and 100%, respectively. Compared with small molecular acidic co-catalysts, the separation of PS-Phenol from the reaction system by simple filtration made the recycling of precious palladium practical and convenient.

Key words: palladium chloride, polystyrene, supported catalyst, phenol, methyl acrylate, methanol, acetalization, methyl3, 3-dimethoxypropanoate, supercritical carbon dioxide