Process for isomerization of alkylaromatics
US4762957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Jun 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for the isomerization of non-equilibrium C.sub.8 aromatics is presented which utilizes a catalytic composition 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 also 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. The method of the instant invention involves addition of the magnesium to a hydrogel comprising pseudoboehmite and zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.