Perovskite-type metal oxide compounds and methods of making and using thereof
First Claim
1. A method of making a catalytic converter comprising the steps of:
- (a) providing a perovkite-type catalyst comprising a metal oxide composition represented by the general formula;
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Abstract
Perovskite-type catalyst consists essentially of a metal oxide composition is provided. The metal oxide composition is represented by the general formula Aa-xBxMOb, in which A is a mixture of elements originally in the form of single phase mixed lanthanides collected from bastnasite; B is a divalent or monovalent cation; M is at least one element selected from the group consisting of elements of an atomic number of from 23 to 30, 40 to 51, and 73 to 80; a is 1 or 2; b is 3 when a is 1 or b is 4 when a is 2; and x is a number defined by 0≦x<0.5. Methods of making and using the perovskite-type catalysts are also provided. The perovskite-type catalyst may be used to make a catalytic converter. Methods of making a catalytic converter are also provided.
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Citations
30 Claims
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1. A method of making a catalytic converter comprising the steps of:
(a) providing a perovkite-type catalyst comprising a metal oxide composition represented by the general formula;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of making a catalytic converter comprising the steps of:
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(a) providing a carrier powder;
(b) providing a support;
(c) depositing the carrier powder to the surface of the support for forming a washcoat on the surface of the support;
(d) forming a homogeneous solution of a single phase mixed lanthanide salt of element A collected from bastnasite and respective salts or oxides of elements B and M, wherein the ratio of A;
B;
M is the ratio represented by the general formula;
- View Dependent Claims (28, 29, 30)
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Specification