Magnesium-exchanged zeolitic catalyst for isomerization of alkylaromatics
US4861740A · kind A · utility
15Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Jul 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An isomerization catalyst is prepared by a novel method of incorporating magnesium into a crystalline aluminosilicate. The catalyst comprises an alumina matrix, a magnesium-containing zeolite, and a Group VIII metal component. It has been found that the method of magnesium addition can dramatically affect the selectivity to para-xylene, as measured by the loss of C.sub.8 aromatics due to undesirable side-reactions during the isomerization of C.sub.8 aromatics. The method of the instant invention involves addition of the magnesium to a hydrogel comprising pseudo-boehmite and a zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.