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Selective catalytic reduction of NOx with propene over double wash-coat monolith catalysts |
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| Authors: | Chan-Soon Kang Young-Jae You Ki-Joong Kim Tae-hee Kim Seong-Jun Ahn Kyong-Hwan Chung Nam-Cook Park Shoichi Kimura Ho-Geun Ahn |
| Affiliation: | aDepartment of Chemical Engineering, Sunchon National University, 315 Maegok-dong, Suncheon-si, Jeonnam 540-742, Republic of Korea bKorea Institute of Culture Technology, Gokseong-kun, Jeonnam 516-853, Republic of Korea cDepartment of Chemical Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea dDepartment of Chemical Engineering, Oregon State University, 102 Gleeson Hall, Corvallis 97331-2702, USA |
| Abstract: | Selective catalytic reduction (SCR) among the approaches for alleviating NOx emission was much attracted. Zeolites have the advantage for adsorption of propene, and noble metal catalyst has the advantage for oxidation of NO to NO2. Pt (or Au)/Al2O3 (or SiO2) were used as the lower layer of double wash-coated monolith catalysts. Zeolites (H-mordenite or ZSM-5) were coated as the upper layer. The catalytic performance of the double wash-coated catalyst was, remarkably, improved. Also, temperature window was shifted to lower temperature and broadened. It was known that the combined noble metal monolith catalyst with zeolite was very effective in removing NOx by SCR with hydrocarbons. |
| Keywords: | NOx Double wash-coat Monolith SCR Propene |
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