高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (9): 939.

• 研究论文 • 上一篇    下一篇

硅胶负载聚乙烯吡啶-聚[苯乙烯-顺丁烯二酸]-钯催化剂的结构研究

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:1988-01-30 出版日期:1989-09-24 发布日期:1989-09-24
  • 通讯作者: 杨士勇
  • 基金资助:

    国家自然科学基金

A Study on the Structures of Polyvinylpyridine-Poly (Styrene-Maleic Acid)-Palladium Catalysts Supported on Silica

Yang Shiyong, Sun Juntan, Li Hong, He Binglin   

  1. Institute of Polymer Chemistry, Nankai University, Tianjin
  • Received:1988-01-30 Online:1989-09-24 Published:1989-09-24

摘要: 利用X-光电子能谱、紫外-可见光谱、电子显微镜等技术研究了硅胶负载的聚乙烯吡啶-聚[苯乙烯-顺丁烯二酸]-钯催化剂的结构.发现催化剂中活性组分除钯(0)外,还存在少量钯(Ⅱ).第二种高分子的存在可以影响钯(Ⅱ)的相对含量.催化剂中钯以很小的粒子均匀分布在载体上,因此具有良好的催化加氢性能.

关键词: 钯催化剂, 电子结合能, 聚乙烯吡啶

Abstract: The Poly(4-vinylpyridine)(P4VP) or Poly(2-vinylpyridine) (P2VP)-Poly(styrene-maleic acid) (PSM)-palladium catalysts supported on silica were prepared.The structures of these catalysts were investigated with X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy and transmission and scanning electron microscopy etc.It is found that the catalysts were composed of both Pd(0) and Pd(Ⅱ) complexes, and the ratio of Pd(Ⅱ)/Pd(0) was affected by the presence of PSM.The palladium particles in the catalysts are well distributed on the carrier surface.

Key words: Palladium catalyst, Electron binding energy, Polyvinylpyridine

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