Process for alkylation-transalkylation of aromatic hydrocarbons by means of methanol
US4112008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Mar 30, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for alkylating or alkylating-transalkylating a charge containing toluene, methanol and, optionally, polymethylbenzenes, in one or two steps, conducted at a temperature from 100.degree. to 600.degree. C under a pressure from 1 to 150 bars in the presence of hydrogen and of a catalyst having a zeolite base of the faujasite type selected from Y sieves containing less than 2% by weight of sodium and at least 0.5% by weight of nickel, silver, cadmium or a mixture thereof and in which the molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 is from 2 to 6, and also in the presence of sulfur either introduced into the charge or preintroduced into the catalyst or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.