高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (6): 638.

• 研究论文 • 上一篇    下一篇

硅胶负载聚乙烯基吡啶-钯催化剂的制备及其催化加氢性能的研究

杨士勇, 孙君坦, 李弘, 何炳林   

  1. 南开大学高分子化学研究所
  • 收稿日期:1988-10-24 出版日期:1990-06-24 发布日期:1990-06-24
  • 通讯作者: 杨士勇
  • 基金资助:

    国家自然科学基金

Preparation and Its Catalytic Hydrogenation Behaviour of Silica Gel-Supported Polyvinylpyridine-Palladium Catalysts

Yang Shiyong, Sun Juntan, Li Hong, He Binglin   

  1. Institute of Polymer Chemistry, Nankai University, Tianjin
  • Received:1988-10-24 Online:1990-06-24 Published:1990-06-24

摘要: 利用硅胶表面的弱酸性和吸附性能,将某些碱性聚合物吸附在硅胶表面上,然后与PdCl2络合,经还原,合成了硅胶负载的聚乙烯基吡啶-钯催化剂。用XPS、UV-Vis、电子显微镜等手段研究了催化剂的结构,观察了制备条件、组成等因素对其性能的影响。研究了各种反应条件与催化剂活性的关系及催化剂的稳定性和使用寿命。合成的催化剂对丙烯酸甲酯等底物具有很高的催化加氢活性。

关键词: 聚乙烯基吡啶, 钯催化剂, 硅胶, 催化加氢

Abstract: Some basic polymers, such as poly-4-vinylpyridine and poly-2-vinylpyridine, were adsorbed on the surface of silica gel with the aid of the weak acidity of silica. The supported polymers were then complexed with PdCl2 and reduced with NaBH4, the title catalysts were synthesized. The structures of the catalysts were characterized by XPS, UV/Vis, scanning and transmission electron microscope etc. The influence of preparation conditions and composition of the catalysts on the catalytic activity, stability and life period was examined. The catalysts synthesized possess a high catalytic activity for the hydrogenation of methylacrylate.

Key words: Polyvinylpyridine, Palladium catalyst, Silica gel, Catalytic hydrogenation

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