Exhaust gas treatment catalyst method for producing exhaust gas treatment catalyst and method for regenerating exhaust gas treatment catalyst

摘要

4Provided is an exhaust gas treatment catalyst provided with a coating layer which contains at least one compound selected from the group consisting of an alkali metal carbonate and an alkaline earth metal carbonate on the surface of a denitration catalyst. In this method for regenerating the exhaust gas treatment catalyst the coating layer of the denitration catalyst to which VOSO has accumulated is removed using an acid and after removing the coating layer the coating layer which contains at least one compound selected from the group consisting of an alkali metal carbonate and an alkaline earth metal carbonate is provided again.