Method of removing carbon monoxide

摘要

A method of removing carbon monoxide from a reformed gas obtained by a reforming process and containing hydrogen as its major component and containing also the carbon monoxide, the method comprising reacting the reformed gas with an oxidizer on a carbon monoxide removing catalyst thereby to remove the carbon monoxide, said carbon monoxide removing catalyst comprising a ruthenium catalyst supported on an alumina support, said carbon monoxide removing catalyst being subjected to a reducing operation at the time of preparation thereof,
wherein
prior to its use in oxidizing/removing the carbon monoxide, said reduced carbon monoxide removing catalyst is caused to contact, at a temperature from 80 to 400°C, an inactive gas or a hydrogen containing inactive gas that consists of less than 50 volume % of hydrogen gas and the remaining volume of the inactive gas.
The reducing operation at the time of said preparation is a reducing operation using hydrazine solution.