Patent ID: 6350423
Filing Date: 2002-02-26
Classification: B01J,C01B,H01M,Y02E

Abstract:
A method of oxidizing carbon monoxide included in a hydrogen rich gas and thereby reducing a concentration of carbon monoxide in the hydrogen rich gas, the method comprising the steps of:mixing the hydrogen rich gas with an oxygen-containing oxidant gas for oxidizing carbon monoxide; and oxidizing carbon monoxide included in the hydrogen rich gas which has been mixed with the oxidant gas, in the presence of a carbon monoxide selective oxidation catalyst through a carbon monoxide selective oxidation reaction for selectively oxidizing carbon monoxide wherein the carbon monoxide selective oxidation catalyst accelerates the carbon monoxide selective oxidation reaction and comprises ruthenium as a primary component and an alkali metal that extends an effective temperature range in which the carbon monoxide selective oxidation reaction is accelerated, and wherein the alkali metal is in a form of an alloy with the ruthenium or in a form of a simple body.