CATALYSTS FOR LEAN BURN ENGINES
First Claim
1. A catalyst for the conversion of CO and/or hydrocarbons in an exhaust stream, comprising:
- a Sn compound selected from the group consisting of a binary composition comprising Sn and Ti, a ternary composition comprising Sn, Ti and Zr, and mixtures of any thereof.
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Abstract
Embodiments of the present disclosure include a catalyst for the conversion of CO and/or hydrocarbons in an exhaust stream including a Sn compound selected from the group consisting of a binary composition comprising Sn and Ti, a ternary composition comprising Sn, Ti and Zr, and mixtures of any thereof. In those embodiments, the binary composition may include Sn(X)Ti(y)O2, wherein x+y=1, 0.85>y>0. In other embodiments of the present disclosure, the Sn compound includes a ternary composition including Sn(a)Ti(b)Zr(c)O2, wherein a is 0.25, b is 0.25 and c is 0.5. Certain embodiments of this disclosure include a method for the conversion of CO in an exhaust stream, including contacting an exhaust stream containing CO with the catalyst described above containing a Sn compound. In other embodiments, the exhaust stream includes hydrocarbons.
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Citations
21 Claims
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1. A catalyst for the conversion of CO and/or hydrocarbons in an exhaust stream, comprising:
a Sn compound selected from the group consisting of a binary composition comprising Sn and Ti, a ternary composition comprising Sn, Ti and Zr, and mixtures of any thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for the conversion of CO in an exhaust stream, comprising:
contacting an exhaust stream containing CO with a catalyst, the catalyst made from the addition of a Sn compound selected from the group consisting of a binary composition comprising Sn and Ti, and a ternary composition comprising Sn, Ti and Zr.
Specification