PREPARATION METHOD OF ZEOLITE CATALYST HAVING IRON IONS FOR SINGLE REDUCTION OF NITROUS OXIDE OR SIMULTANEOUS REDUCTION OF NITROUS OXIDE AND NITROGEN MONOXIDE BY AMMONIA REDUCTANT AND SINGLE REDUCTION OF NITROUS OXIDE OR SIMULTANEOUS REDUCTION OF NITROUS OXIDE, ZEOLITE CATALYST BY USING THE METHOD AND NITROGEN MONOXIDE BY USING THE METHOD

摘要

PURPOSE: A method for preparing zeolite catalyst containing iron ions and a method for reducing a nitrous oxide or both the nitrous oxide and a nitrogen oxide are provided to improve low-temperature activation by performing the nitrous oxide or both the nitrous oxide and the nitrogen oxide reduction process at 300 to 500 degrees Celsius. CONSTITUTION: Zeolite is pre-treated at high temperature using moisture(A). Pre-treated zeolite or zeolite carries iron-ions using an iron-ion precursor solution(B). Particles of zeolite carrying the iron ions are filtered and dried to prepare dried powder(C). An iron ion carrying process, a filtering process, and a drying process are repeated in order to increase the content of iron in a dried powder(D).