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Pd Nanoparticles-Loaded Vinyl Polymer Gels: Preparation, Structure and Catalysis

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Title: Pd Nanoparticles-Loaded Vinyl Polymer Gels: Preparation, Structure and Catalysis
Authors: Elbayoumy, Elsayed Browse this author
Wang, Yuting Browse this author
Rahman, Jamil Browse this author
Trombini, Claudio Browse this author
Bando, Masayoshi Browse this author
Song, Zhiyi Browse this author
Diab, Mostafa A. Browse this author
Mohamed, Farid S. Browse this author
Naga, Naofumi Browse this author
Nakano, Tamaki Browse this author →KAKEN DB
Keywords: palladium nanoparticle
vinyl polymer gels
heterogenous catalysis
Issue Date: Jan-2021
Publisher: MDPI
Journal Title: Catalysts
Volume: 11
Issue: 1
Start Page: 137
Publisher DOI: 10.3390/catal11010137
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 Pd-0 nanoparticles within VPGs. The structures of Pd-0-loaded VPGs were analyzed by XRD, TEM, and nitrogen gas adsorption. Pd-0-loaded VPGs had nanocrystals of Pd-0 within and on the surface of the polymeric supports. Pd-0/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 Pd-0. 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.
Type: article
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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