Promising zeolite-type hydrocarbon trap catalyst by a knowledge-based combinatorial approach |
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| Authors: | Joo-Hyoung Park Sang Jun Park Hee Ah Ahn In-Sik Nam Gwon Koo Yeo Jeong Ki Kil Young Kee Youn |
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| Affiliation: | 1. School of Environmental Science and Engineering, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), San 31 Hyojadong, Pohang 790-784, Republic of Korea;2. Research and Development Division for Hyundai Motors Company and Kia Motors Corporation, Yongin-Si, Republic of Korea;1. Department of Chemical Technology, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland;2. Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland;3. Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7197, Laboratoire de Réactivité de Surface, 4 place Jussieu, Case 168, F-75252, Paris, France;1. J. Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, Dolejskova 3, Prague 8, CZ-182 23, Czech Republic;2. Institute of Industrial Science, The University of Tokyo, Komaba 4-6-1, Meguro, Tokyo 153-8505, Japan;1. National University of Science and Technology MISiS, Moscow Leninsky prosp. 4, Russian Federation;2. Russian Federal Nuclear Center - VNIIEF, 37, av. Mira, Sarov, Nizhny Novgorod reg., 607190, Russian Federation;3. N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., Moscow 119991, Russian Federation |
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| Abstract: | Libraries consisting of more than 100 zeolite samples were prepared and examined for developing a promising HC trap catalyst. Parallel adsorptions of toluene onto the catalyst samples were conducted over a 10 × 10 array reactor under dry and wet conditions with or without a heating process three knowledge-based conditions for developing an automotive catalyst during the cold-start period. FAU and BEA type zeolites revealed a high performance of toluene adsorption under the dry condition. However, FAU type zeolite significantly decreased the amount of toluene adsorbed in the presence of water in the feed gas stream, mainly due to the hydrophobicity of the catalyst surface. Over Beta type zeolites, the toluene adsorbed was found to be considerably preserved, even after forced desorption temperature-ramping to the warm-up condition of an automotive engine. Li, K, or Ag ion-exchanged Beta zeolites seem to be particularly promising as an HC trap catalyst. |
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