Patent · US Expired

Use of composite catalyst for the dismutation and/or transalkylation of alkylaromatic hydrocarbons

US5919995A · kind A · utility

0Cited by
2References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 7, 1997
Grant dateJul 6, 1999
Priority date—
Expiry dateFeb 7, 2017

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/52
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

The invention concerns the use of a catalyst for the dismutation of alkylaromatic hydrocarbons, preferably for the dismutation of toluene to produce benzene and xylenes, and/or for the transalkylation of alkylaromatic hydrocarbons, preferably for the transalkylation of toluene and trimethylbenzenes to produce xylenes. The catalyst is a composite comprising at least one zeolite with structure type mazzite, at least partially in its acid form, at least one zeolite with structure type mordenite, at least partially in its acid form, at least one matrix and, optionally, at least one element selected from the group formed by groups IB and VIII of the periodic classification of the elements.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.