Noble metal catalysts supported on nanofibrous polymeric membranes for environmental applications

• Published in: Catalysis today Vol. 236; pp. 3 - 11
• Main Authors: Soukup, K., Topka, P., Hejtmánek, V., Petráš, D., Valeš, V., Šolcová, O.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.2014; Elsevier
• Subjects: Applied sciences; Catalysis; Catalytic oxidation; Chemistry; Colloidal state and disperse state; Electrospinning; Exact sciences and technology; Exchange resins and membranes; Forms of application and semi-finished materials; General and physical chemistry; Membranes; Nanofibrous polymeric membrane; Noble metals; Poly(2,6-dimethyl-1,4-phenylene) oxide; Polymer industry, paints, wood; Technology of polymers; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Volatile organic compounds; Volatile organic compounds; Electrospinning; Poly(2,6-dimethyl-1,4-phenylene) oxide; Catalytic oxidation; Noble metals; Nanofibrous polymeric membrane; Polymeric membrane; Catalytic reaction; Oxides; Volatile organic compound; Heterogeneous catalysis; Membrane reactor; Noble metal; Oxidation; Catalyst support
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2014.03.040

•The effect of preparation method on metal particle size and catalytic activity was investigated for Pd and Pt catalysts.•For the different impregnation time, catalysts with the same metal loading but different mean particle size were prepared.•The activity of Pt catalyst in the total oxidation of methanol depended linearly on the mean size of Pt nanoparticles.•Palladium catalyst exhibited the same catalytic performance irrespective of the varying the mean Pd particle size. The effect of preparation method on the particle size of palladium and platinum nanoparticles supported on poly(2,6-dimethyl-1,4-phenylene) oxide electrospun membranes by the wet impregnation technique was investigated. Catalysts with similar metal loading (0.63–0.78wt.%) possessing various mean metal particle size (2.5–8.7nm) were prepared employing different impregnation times and nominal metal loadings. The catalysts were tested in the total oxidation of methanol (1000ppm in air). The catalytic activity of platinum catalysts increased with increasing size of Pt nanoparticles while the effect of the platinum loading was not observed. On the other hand, the catalytic activity of palladium catalysts increased with the increasing palladium loading and did not correlate with the nanoparticle size.