ZPGM Catalyst Including Co-Mn-Fe and Cu-Mn-Fe Materials for TWC Applications
First Claim
1. A catalytic composition, comprising:
- an oxygen storage material, comprising;
Co_Mn—
Fe 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.
3 Assignments
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Accused Products
Abstract
Variations of bulk powder catalyst materials, including a plurality of formulations for stoichiometric and non-stoichiometric Co_Mn—Fe spinel and Cu—Mn—Fe spinel, which may be prepared by incipient wetness method, employing variations of molar ratio and general formulation (CoxFezMn2z)3-δO4, and Co1-xMnxFe2O4 spinel supported on doped ZrO2 support oxide. According to principles in present disclosure, a plurality of formulations for fine grain bulk powder compositions of Cu—Mn—Fe spinel with general formulation of CuxMnyFezO4, may provide solutions for enhanced NOx, CO, and HC conversion performance for TWC applications, employing ZPGM materials for a plurality of TWC applications. Additionally, these types of ternary ZPGM fine grain bulk powder spinel compositions may have a cost effective manufacturing advantage.
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Citations
21 Claims
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1. A catalytic composition, comprising:
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an oxygen storage material, comprising; Co_Mn—
Fe 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for making a catalytic composition, comprising:
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preparing a solution comprising Co nitrate solution Co(NO3)2, Fe nitrate solution (Fe(NO3)3) and Mn nitrate solution (Mn(NO3)2) with water wherein Co_Mn—
Fe spinel is formed;adding the solution drop-wise to doped Zirconia powder via an incipient wetness method to create a mixture; drying the mixture at 120°
C. for more than 4 hours; andcalcining the mixture at about 800°
C. for about 5 hours - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification