Catalytic conversion of aqueous ethanol to ethylene
US4873392A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/025
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided a process for converting diluted ethanol to ethylene which comprises heating an ethanol-containing fermentation broth thereby to vaporize a mixture of ethanol and water and contacting said vaporized mixture with a ZSM-5 zeolite catalyst selected from the group consisting of PA0 a ZSM-5 zeolite having a Si/Al atomic ratio of from 5 to 75 which has been treated with steam at a temperature ranging from 400.degree. to 800.degree. C. for a period of from 1 to 48 hours; PA0 a ZSM-5 zeolite having a Si/Al atomic ratio of from 5 to 50 and wherein La or Ce ions have been incorporated in a weight percentage of 0.1 to 1.0% by ion exchange or in a weight percentage ranging from 0.1 to 5% by impregnation, and PA0 a ZSM-5 zeolite having a Si/Al of from 5 to 50 and impregnated with a 0.5 to 7% wt % of triflic acid, and recovering the ethylene thus produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.