期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 130, 期 1-3, 页码 239-247出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2009.11.016
关键词
Zeolite; Silicoaluminophosphate; Propene trap; Cold start
类别
资金
- Spanish Ministerio de Medio Ambiente y Medio Rural y Marino [331/PC08/3-13.1]
- Generalitat Valenciana [PROMETEO/2009/047]
Propene adsorption isotherms, breakthrough curves and temperature programme desorption profiles have been obtained for six different crystalline materials with distinctive framework structures (3D and 1D) and a variety of Si/Al ratios and cations (four zeolites: Silicalite-1, BETA, ZSM-5, Mordenite; and two silicoaluminophosphate molecular sieves: SAPO-41 and SAPO-5). Moreover, for a proper evaluation of the solids in a propene trap under cold start conditions, cold start tests have been performed, carrying out four cycles (adsorption/desorption) to analyze the ageing process of the materials. A detailed analysis of the experimental results points out that materials with high equilibrium propene adsorption capacity at 30 degrees C, where propene is mainly chemisorbed and, which presents some kinetics restrictions, seem to be the best for a propene trap under cold start conditions. BETA and ZSM-5 zeolites and SAPO-5 silicoaluminophosphate molecular sieve are promising materials as propene traps. (C) 2009 Elsevier Inc. All rights reserved.
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