Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
A Collective Case Screening of the Zeolites made in Japan for High Performance NH3-SCR of NOx
Subramaniam Vishnu PriyaTakeshi OhnishiYumiko ShimadaYoshihiro KubotaTakao MasudaYuta NakasakaMasahiko MatsukataKeiji ItabashiTatsuya OkuboTsuneji SanoNao TsunojiToshiyuki YokoiMasaru Ogura
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2018 Volume 91 Issue 3 Pages 355-361


Zeolites demonstrating better SCR of NOx performance due to wide temperature activity, hydrothermal stability and N2 selectivity have been identified under a joint research initiative by the Research Association of Automotive Internal Combustion Engines (AICE), Japan. Based on the AICE’s standards, over 25 zeolites with different structures and pore dimensions were investigated and their SCR efficiency and durability have been compared. While the performances of the top contenders cannot be related to a single parameter, the results suggest that the SAR, Cu quality/quantity, pore dimensions, diffusivity and acidity play a combined role in deciding the SCR activity and selectivity.

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© 2018 The Chemical Society of Japan
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