Process for the production of dimethyl ether
US4098809A · kind A · utility
17Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Jul 4, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C43/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dimethyl ether is prepared by feeding a mixture of CO, CO.sub.2 and H.sub.2, wherein the quantity of CO is in excess of the stoichiometric value, to a reactor containing a methyl alcohol synthesis catalyst, such as a copper base or chrome-zinc base catalyst, and a methyl alcohol dehydration catalyst, such as alumina, whereby methyl alcohol is formed as an intermediate product which is transformed into dimethyl ether in the same reactor at a temperature in the range of 220.degree. to 400.degree. C and a pressure in the range of 30 to 500 kg/cm.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.