Pd nanoparticles‐loaded vinyl polymer gels: Preparation, structure and catalysis

Elsayed Elbayoumy, Yuting Wang, Md A.R. Jamil, Claudio Trombini, Masayoshi Bando, Zhiyi Song, Mostafa A. Diab, Farid Sh Mohamed, Naofumi Naga, Tamaki Nakano

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Four vinyl polymer gels (VPGs) were synthesized by free radical polymerization of divinylbenzene, ethane‐1,2‐diyl dimethacrylate, and copolymerization of divinylbenzene with styrene, and ethane‐1,2‐diyl dimethacrylate with methyl methacrylate, as supports for palladium nanoparticles. VPGs obtained from divinylbenzene and from divinylbenzene with styrene had spherical shapes while those obtained from ethane‐1,2‐diyl dimethacrylate and from ethane‐1,2‐diyl dimethacrylate with methyl methacrylate did not have any specific shapes. Pd(OAc)2 was impregnated onto VPGs and reduced to form Pd0 nanoparticles within VPGs. The structures of Pd0‐loaded VPGs were analyzed by XRD, TEM, and nitrogen gas adsorption. Pd0‐loaded VPGs had nanocrystals of Pd0 within and on the surface of the polymeric supports. Pd0/VPGs efficiently catalyzed the oxidation/disproportionation of benzyl alcohol into benzaldehyde/toluene, where activity and selectivity between benzaldehyde and toluene varied, depending on the structure of VPG and the weight percentage loading of Pd0. The catalysts were stable and Pd leaching to liquid phase did not occur. The catalysts were separated and reused for five times without any significant decrease in the catalytic activity.

Original languageEnglish
Article number137
Pages (from-to)1-17
Number of pages17
JournalCatalysts
Volume11
Issue number1
DOIs
Publication statusPublished - 2021 Jan

Keywords

  • Heterogenous catalysis
  • Palladium nanoparticle
  • Vinyl polymer gels

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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