Zero-PGM TWC with High Redox Reversibility
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Jun 14, 2016
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Jun 15, 2015
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The present disclosure describes zero-platinum group metals (ZPGM) material compositions including binary Cu—Mn spinel oxide powders having stable reduction/oxidation (redox) reversibility useful for TWC and oxygen storage material applications. The behavior of Cu—Mn spinel oxide powder is analyzed under oxidation-reduction environments to determine redox reversibility, catalytic activity, and spinel structure stability. Characterization of spinel powder is performed employing X-ray diffraction analysis, hydrogen temperature-programmed reduction technique, transmission electron microscopy analysis, and X-ray photoelectron spectroscopy analysis. Test results confirm the phase and structural stability of the Cu—Mn spinel oxide during redox reaction, thereby indicating that the Cu—Mn spinel oxide can be employed in a plurality of TWC applications.
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