title: Bimetallic Pt-Au Nanocatalysts on ZnO/Al2O3/Monolith for Air Pollution Control.
abstract: The catalytic activity of a monolithic catalyst with nanosized Pt and Au particles on ZnO/Al2O3 (Pt-Au/ZnO/Al2O3/M) prepared by a wash-coat method was examined, specifically for toluene oxidation. Scanning electron microscopy image showed clearly the formation of a ZnO/Al2O3 layer on the monolith. Nanosized Pt-Au particles on ZnO/Al2O3/M with different sizes could be found in the Pt-Au/ZnO/Al2O3/M catalyst. The conversion of toluene decreased with increasing toluene concentration and was also largely affected by the feed flow rate. The Pt-Au/ZnO/Al2O3/M catalysts prepared in this work have almost the same activity (molecules of toluene per second) compared with a powder Pt-Au/ZnO/Al2O3 catalyst with the same loadings of Pt and Au components; thus this catalyst could be used in controlling air pollution with very low concentrations and high flow rate.
authors.forename: Ki-Joong
authors.initials: KJ
authors.lastname: Kim
authors.forename: Ho-Geun
authors.initials: HG
authors.lastname: Ahn
mesh_terms: D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D000497:Alloys / Q000737:chemistry; D000537:Aluminum Oxide / Q000737:chemistry; D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties; D014050:Toluene / Q000737:chemistry / Q000302:isolation & purification*; D018505:Waste Management / Q000379:methods; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D000497:Alloys; D014050:Toluene; D010984:Platinum; D006046:Gold; D000537:Aluminum Oxide; D015034:Zinc Oxide