Method for making 2,6-xylenol
US6620908B2 · kind B2 · utility
5Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0018
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making 2,6-xylenol is described. One embodiment of the method comprises: preparing a magnesium-based solid catalyst composition by dry-blending basic magnesium carbonate with at least one filler; forming the catalyst composition into a suitable catalyst-shape; calcining the shaped catalyst at a temperature in the range of about 350° C. to about 550° C.; and reacting phenol and methanol in the presence of the catalyst, to form 2,6-xylenol. The level of chlorides in the magnesium carbonate is less than about 250 ppm, and the level of calcium in the magnesium carbonate is less than about 2,500 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.