[1A01-07] Environmental chemistry

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)English

[1A06] Comparative study between Cu/CeO₂ and CuMnCe oxide catalysts for low temperature nitrogen oxide to ammonia reaction

○Chandan Chaudhari¹, Yuichi Manaka^1,2, Tetsuya Nanba¹ (1. Fukushima Renewable Energy Institute, AIST, 2. Science Tokyo)

Keywords:

NOx,Ammonia synthesis,Bulk catalyst

We compared supported catalyst (Cu/CeO₂) and bulk catalyst (CuMnCe) oxide for low temperature nitrogen oxide to ammonia reaction. Cu/CeO₂ catalyst was prepared by wet impregnation method and CuMnCe oxide catalysts with different Ce loading amount were synthesized by using citric acid. Among them, Ce(66 %)-doped Cu_0.17Mn_0.17 catalyst showed high NO conversion and ammonia yield below 150 °C. Raman and XPS analysis revealed Cu and Mn incorporated in CeO₂ and formed solid solution as well as new redox sites which might be useful for ammonia formation.