Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (03): 243-247.doi: 10.3866/PKU.WHXB20020311

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Structure and Activity of Polymer Immobilized Co-Pd Catalysts

Huang Wei-Ping;Zheng Xiu-Cheng;Zhang Shou-Min;Qiu Xiao-Hang;Li Bao-Qing;Wu Shi-Hua   

  1. Department of Chemistry,Nankai University,Tianjin 300071
  • Received:2001-06-19 Revised:2001-12-06 Published:2002-03-15
  • Contact: Wu Shi-Hua

Abstract: Solvated metal atom impregnation (SMAI) method was used to prepare polymer immobilized metal catalysts under mild conditions.Several SMAI CoPd catalysts with different metal contents were prepared.These catalysts were studied by Xray diffraction (XRD),Xray photoelectron spectroscopy (XPS) and magnetic measurement.Compared with catalysts prepared by common impregnation (CI) method,the particle sizes of the metal in SMAI catalysts were much smaller.The contents of zerovalent state metallic Co and Pd in SMAI catalysts were higher than those in CI catalysts.The Co atoms were enriched on the surface for SMAI catalysts,whereas the Co atom concentration on the surface was essentially the same as in the bulk for CI catalysts.The catalytic activity of SMAI catalysts was much greater than that of CI catalysts with the same composition in hydrogenation of diacetone alcohol and O2 reduction on fuel cell electrodes.

Key words: Solvated metal atom, Polymer immobilized Co-Pd bimetallic catalysts,  Fuel cell electrode, Hydrogenation