期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 68, 期 -, 页码 196-208出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2018.07.046
关键词
Methanol-to-DME reaction; Catalyst deactivation; Coke deposition; Coke composition; Carbon deposit location
资金
- Spanish Ministry of Economy and Competitiveness [MAT2016-77496-R]
The effect of channel-system of zeolite on methanol-to-DME reaction was studied. Results revealed that channels size and topology affect catalyst lifetime, type and location of coke precursors. FER and MFI showed the best resistance towards coke deposition, whilst fast deactivation was observed on MOR. Although the higher concentration and strength of acid sites, FER structure formed a lower coke amount, preferably located within the pores, while coke cluster deposited on the external surface of MOR. Analysis of acid sites distribution and strength was performed during deactivation-regeneration process. Coke location assessment was also supported by molecular simulations. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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