METHOD FOR CLEANING METHANE-CONTAINING EXHAUST GAS, METHOD FOR PRETREATING THREE-WAY CATALYST FOR CLEANING METHANE-CONTAINING EXHAUST GAS AND THREE-WAY CATALYST PRETREATED THEREBY

摘要

PROBLEM TO BE SOLVED: To provide a method for cleaning a methane-containing exhaust gas, by which carbon monoxide contained in the methane-containing exhaust gas can be removed efficiently.;SOLUTION: The method for a cleaning methane-containing exhaust gas comprises a step of bringing the methane-containing exhaust gas adjusted to a stoichiometric air fuel ratio into contact with the three-way catalyst obtained by depositing at least two noble metals selected from the group consisting of platinum, rhodium and iridium, and sulfur on a fire-proof inorganic oxide.;COPYRIGHT: (C)2007,JPO&INPIT