Current Status and Future Aspects of SCR Catalyst for Automotive Emission Control

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  • 自動車用SCR触媒の現状と課題
  • ジドウシャヨウ SCR ショクバイ ノ ゲンジョウ ト カダイ

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Description

SCR (Selective Catalytic Reduction) by using metal ion-exchanged zeolite as catalyst and ammonia as reducing agent, has been used to control nitrogen oxide (NOx: nitrogen monoxide and nitrogen dioxide) included in the automotive exhaust. SCR was effective way to control NOx in the exhaust form stational emission source like as furnaces, boilers and chemical plants, nevertheless there were lot of issues to be solved when SCR was applied to automotive. In addition, many issues were considered until zeolite was authorized as the material for automotive emission control catalyst. This article comments about the zeolite-based ammonia SCR catalyst, the distance until the practical use, the present conditions, and issues for future improvement.

Journal

  • ゼオライト

    ゼオライト 36 (2), 38-47, 2019-04-15

    Japan Association of Zeolite

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