Systems and Methods for Zero-PGM Binary Catalyst Having Cu, Mn, and Fe For TWC Applications
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United States of America Patent
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Dec 7, 2015
filing date -
Mar 22, 2013
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Abstract
Variations of bulk powder catalyst material including Cu—Mn, Cu—Fe, and Fe—Mn spinel systems for ZPGM TWC applications are disclosed. The disclosed bulk powder catalyst samples include stoichiometric and non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinels on Pr6O11—ZrO2 support oxide, prepared using incipient wetness method. Activity measurements under isothermal steady state sweep test condition may be performed under rich to lean condition. Catalytic activity of samples may be compared to analyze the influence that different binary spinel system bulk powders may have on TWC performance of ZPGM materials for a plurality of TWC applications. Stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems exhibit higher catalytic activity than non-stoichiometric Cu—Mn, Cu—Fe, and Fe—Mn spinel systems. The influence of prepared Cu—Mn, Cu—Fe, and Fe—Mn spinel systems may lead into cost effective manufacturing solutions for ZPGM TWC systems.
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