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

The invention alone or reduction of greenhouse gas, nitrous oxide, nitrous oxide by ammonia nitrogen and reducing air pollution gas as, its purpose is simultaneously lowered on the way of the sole reduction of nitrous oxide or nitrogen monoxide with the nitrous oxide produced by the method and using the same catalyst and ammonia reducing agent for iron ions in the zeolite-supported catalyst for the simultaneous reduction of the nitrogen monoxide solely by the reduction in nitrous oxide alone or reduction of nitrous oxide and zeolite-supported catalysts are iron ions as high-efficiency catalyst for simultaneous reduction of nitrogen monoxide with the catalyst and the ammonia production process and using the same reducing agent in the reducing agent by ammonia or nitrous oxide nitrous oxide and to provide a method for simultaneously reducing the temperature of the low temperature screen nitrogen monoxide. ; This configuration of the invention includes the steps of pre-treatment (A) in the zeolite with water at elevated temperature, (B) wherein (A) the pre-treated in the step up to this iron-on with a solution of ferric ion precursor material and a step of supporting, (C) the (B) and the drying step was filtered on the iron-containing zeolite particles in the step, (D) the (C) to increase the iron content of the dried powder from step (B ) and (C) and repeat the process step of step, (E) the (D) and nitrous oxide, alone or reduction of nitrous oxide by the ammonia reducing agent, characterized in that the catalyst prepared in step comprises a step of heating in the air Preparation of zeolite catalysts supported iron ions for simultaneous reduction of nitrous oxide method and from which the produced catalyst and the nitrous oxide reducing agent by ammonia reduction using the same single or simultaneous reduction of nitrous oxide and nitrogen monoxide how the temperature of the low temperature characterized.