Process for dehydrating methanol to dimethyl ether product
US11673851B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 24, 2018 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 24, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C43/043
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process the dehydration of methanol to dimethyl ether in the presence of a solid Brønsted acid catalyst selected from aluminosilicate zeolites which have a maximum free sphere diameter of greater than 3.67 Angstroms and heteropolyacids and a promoter selected from methyl formate, dimethyl oxalate and dimethyl malonate and the molar ratio of promoter to methanol is maintained at less than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.