Zero PGM Catalyst Including Cu-Co-Mn Ternary Spinel for TWC Applications
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Accused Products
Abstract
Variations of ZPGM bulk powder catalyst materials, including Cu—Co—Mn ternary spinel systems for TWC applications are disclosed. Bulk powder catalyst samples are prepared employing a plurality of molar ratio variations, including disclosed Cu—Co—Mn spinel on Praseodymium-Zirconia support oxide made by incipient wetness method, or Cu—Co—Mn spinel on Niobium-Zirconia support oxide, which may be synthesized by co-precipitation method. A plurality of bulk powder catalyst samples may be tested by performing isothermal steady state sweep test, employing a flow reactor at inlet temperature of about 450° C., and testing a gas stream from lean to rich condition and influence on TWC performance measured/analyzed, which may lead into significant improvements in the manufacturing of ZPGM bulk powder catalyst materials for TWC applications.
17 Citations
24 Claims
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1-7. -7. (canceled)
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8. A catalytic composition, comprising:
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an oxygen storage material, comprising; Cu—
Co—
Mn spinel on a doped zirconia support oxide;wherein the oxygen storage material converts at least one of NO, CO and HC through oxidation or reduction; and wherein the doped zirconia comprises Pr6O11—
ZrO2.
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9-13. -13. (canceled)
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14. A catalytic composition, comprising:
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an oxygen storage material, comprising; Cu—
Co—
Mn spinel on a doped zirconia support oxide;wherein the oxygen storage material converts at least one of NO, CO and HC through oxidation or reduction; and wherein the doped zirconia comprises Nb2O5—
ZrO2.- View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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15-17. -17. (canceled)
Specification