Process for dehydration of mono-alcohol(s) using a modified crystalline aluminosilicate
US10851028B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Sep 6, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for dehydration of a mono-alcohol, or of a mixture of at least two mono-alcohols, having at least 2 carbon atoms and at most 7 carbon atoms into olefins having the same number of carbons, wherein the process uses a catalyst composition that comprises a modified crystalline aluminosilicate has an acidity between 350 and 500 μmol/g that comprises, and further wherein the catalyst composition is obtained by a process comprising the steps of providing a crystalline aluminosilicate having a Si/Al framework molar ratio greater than 10; and steaming said crystalline aluminosilicate, or said shaped and/or calcined crystalline aluminosilicate at a temperature ranging from 100° C. to 380° C.; and under a gas phase atmosphere, without liquid, containing from 5 wt % to 100 wt % of steam; at a pressure ranging from 2 to 200 bars; at a partial pressure of H2O from 2 bars to 200 bars; and said steaming being performed during at least 30 min and up to 144 h.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.