ZPGM TWC Systems Compositions and Methods Thereof

Abstract

Compositions and methods for the preparation of ZPGM TWC systems are disclosed. ZPGM TWC systems may be employed within catalytic converters to oxidize toxic gases, such as carbon monoxide and other hydrocarbons, as well as to reduce nitrogen oxides. ZPGM TWC systems are completely free of PGM catalyst and may include: a substrate, a washcoat, and an overcoat. Washcoat may include manganese as ZPGM catalyst, and carrier material oxides. Similarly, overcoat may include at least one ZPGM catalyst, carrier material oxides and OSMs. Suitable known in the art chemical techniques, deposition methods and treatment systems may be employed in order to form the disclosed ZPGM TWC systems. ZPGM TWC systems may include high surface area, low conversion temperature catalysts that may exhibit high efficiency in the conversion of exhaust gases.

Dependencies are inferred from the claim text.