Cerium-Cobalt Spinel System as ZPGM Composition for DOC Applications
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United States of America Patent
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Issued Date -
Sep 15, 2016
app pub date -
Mar 13, 2015
filing date -
Mar 13, 2015
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Abandoned
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Abstract
Variations of ZPGM catalyst material compositions including cerium-cobalt spinel oxide systems for ZPGM DOC applications are disclosed. The disclosed ZPGM catalyst compositions include CexCo3−xO4 spinel and effect of adding copper to Ce-Co as CuxCe1−xCo2O4 spinel systems supported on doped zirconia support oxide, which are produced by the incipient wetness (IW) methodology. ZPGM catalyst compositions are subjected to BET-surface area and XRD analyses to determine the thermal stability and spinel phase formation of supported spinal systems, respectively. DOC performance of ZPGM catalyst compositions is determined under steady state DOC light off test condition to verify/compare oxidation activity of disclosed spinel compositions, desirable and suitable for ZPGM catalyst materials in DOC applications.
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