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| Titel: |
REVIEW: DEHYDRATION CATALYSTS FOR THE METHANOL/DIMETHYL ETHER REACTION |
| Auteur: |
Spivey, James J. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 110 (1991) nr. 1 pagina's 123-142 |
| Jaar: |
1991-12-01 |
| Inhoud: |
Catalysts for the methanol/dimethyl ether reaction are reviewed with particular emphasis on the acid/base properties of the catalysts. The focus is on temperatues less than around 300°C and atmospheric pressure conditions, which correspond to potential automotive applications. Mechanisms including both dual site (acid/base) Langmiur-Hinshelwood and single site Rideal-Eley mechanisms have been postulated, with both Bronsted and Lewis acid sites involved in the dehydration reaction. Temperatures higher than about 300°C, as well as a strong surface acidity, tend to promote the further dehydration of DME to form C2-Q5 olefins and eventually hydrocarbon products in a series type reaction sequence. Methods exist, particularly in zeolites, to control the strength and type of surface acidity, and therefore the selectivity to DME. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 13 gevonden artikelen
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