Method for preparing a hydrocarbon adsorption catalyst, a hydrocarbon adsorption catalyst prepared thereby, and a hydrocarbon trap comprising the same
AssigneesHyundai Motor Company, Kia Corporation, Korea University Research and Business Foundation
InventorsChun Yong Kang, Eunhee Jang, Jungkyu Choi, Jaehee Shim, Jin Seong Kim
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Abstract
Provided herein are a method for producing a hydrocarbon adsorption catalyst includes dealuminated zeolite by heat-treating a zeolite in moisture-containing air at a first temperature to remove a portion of aluminum included in the zeolite, and supporting a metal on a carrier including the zeolite after the heat-treating and a hydrocarbon adsorption catalyst prepared using the same method. The metal-supported support may be additionally heat-treated in moisture-containing air at a second temperature that is higher than the first temperature.
Claims16
A method for preparing a hydrocarbon adsorption catalyst, comprising:
- first heat-treating a zeolite in moisture-containing air at a first temperature to remove a portion of aluminum included in the zeolite;
- and
- supporting a metal on a carrier including the zeolite,
- wherein the carrier on which the metal is supported is subjected to second heat-treating at a second temperature that is higher than the first temperature, and
- wherein the zeolite, after the first heat-treating, has an amount of Lewis acid sites of about 400 μmol·g−1 to about 600 μmol·g−1.
Dependencies are inferred from the claim text.