期刊
APPLIED CATALYSIS A-GENERAL
卷 402, 期 1-2, 页码 139-145出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2011.05.039
关键词
Methanol dehydration; Dimethylether; ZSM-5 zeolite; Operational temperature range
资金
- Agence Nationale de la Recherche (ANR) [ANR-10-JCJC-0703]
- Agence Nationale de la Recherche (ANR) [ANR-10-JCJC-0703] Funding Source: Agence Nationale de la Recherche (ANR)
Zeolites having different pore topologies were tested in the dehydration of methanol into dimethylether (DME) under inert and oxidative atmosphere. The experiments were carried out under air to inhibit the Methanol-To-Hydrocarbons (MTH) reaction, which tends to decrease the selectivity in DME. In addition, the presence of air led to broadening the operational temperature range (OTR) up to 400 degrees C, while maintaining the DME selectivity above 90% during 50 h on stream. Among the solid acid catalysts, the ZSM-5 zeolites exhibited the higher catalytic activity, with a degree of methanol conversion close to 75%. Furthermore, H-[F]ZSM-5 zeolite, prepared via a fluoride-mediated route, remains the more stable and selective toward DME at 400 degrees C. 2011 Elsevier B.V. All rights reserved.
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