Process for dehydrating methanol to dimethyl ether product
US11427524B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Jan 4, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for dehydrating methanol to dimethyl ether product in the presence of a solid Brønsted acid catalyst which is an aluminosilicate zeolite or a heteropolyacid and a promoter which is (i) a ketone of formula R1COR2 (Formula I) in which R1 and R2 are identical or different and are each a C1-C11 alkyl group and furthermore R1 and R2 together with the carbonyl carbon atom to which they are bonded may form a cyclic ketone; or (ii) a ketal derivative of a ketone of Formula I; and the molar ratio of promoter to methanol is maintained at 0.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.