CATALYSTS AND METHODS FOR LOW-TEMPERATURE DESTRUCTION OF VOCs IN AIR AND SELECTIVE REMOVAL OF CO

摘要

Catalyst compositions useful for destruction of volatile organic carbons (VOCs) in an oxygen-containing gas stream at low temperatures and for selective oxidation of carbon monoxide from a hydrogen-containing gas comprising: one or more first metals selected from the group consisting of: Ce and Zr; and at least one of: a) one or more second metals selected from the group consisting of: Gd, La, Sr and Sc; b) one or more third metals selected from the group consisting of: Ti, V, Mn, Fe, Co, Cr, Ni, Au, Ag and Cu; and c) one or more fourth metals selected from the group consisting of Pt, Pd, Rh, Ru, Re, Os and Ir are provided. Catalyst compositions provided may be single-phase, mixed-metal oxides, or multi-phase.