One-Stage Synthesis of Cagelike Porous Polymeric Microspheres and Application as Catalyst Scaffold of Pd Nanoparticles

• Published in: Macromolecules Vol. 44; no. 10; pp. 3730 - 3738
• Main Authors: Xu, Jianxiong, Chen, Guojun, Yan, Rui, Wang, Da, Zhang, Minchao, Zhang, Wangqing, Sun, Pingchuan
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 24.05.2011
• Subjects: Applied sciences; Catalysis; Catalysts: preparations and properties; Chemistry; Exact sciences and technology; General and physical chemistry; Organic polymers; Physicochemistry of polymers; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; Properties and characterization; Special properties (catalyst, reagent or carrier); Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Nitro compound; Emulsion copolymerization; Nanoparticle; Cationic surfactant; Immobilization; Styrene derivative copolymer; Hydrogenation; Porous material; Supported catalyst; Submicron particle; Pore size; Aniline; Water oil water emulsion; Amine copolymer; Catalyst support; Palladium; Experimental study; Metal particle; Structure processing relationship; Morphology; Preparation; Monodispersed particle; Spherical particle; Radical copolymerization; Primary amine; Catalyst activity; Macroporosity; Styrene copolymer
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma200320a

One-stage synthesis of cagelike porous polymeric microspheres and their application as catalyst scaffold of Pd nanoparticles are discussed. The synthesis of cagelike porous polymeric microspheres is achieved by W/O/W emulsion polymerization of a surfactant monomer of N-(4-vinylbenzyl)-N,N-dibutylamine hydrochloride and a hydrophobic monomer of styrene in water. Ascribed to the surfactant monomer, convenient one-stage synthesis of cagelike porous polymeric microspheres is afforded, and cagelike porous polymeric microspheres with size ranging from 300 to 600 nm and pore volume as large as 0.31 cm3/g are fabricated. The porous character and the inherent quaternary ammonium moieties make the cagelike porous polymeric microspheres to be the promising catalyst scaffold of Pd nanoparticles, and up to 10 wt % Pd catalyst with the metal particle size ranging from 2.1 to 5.7 nm is loaded. The catalytic hydrogenation of nitrobenzene by H2 demonstrates that the heterogeneous Pd catalyst is efficient and reusable.