Process for para selective alkylation of aromatic hydrocarbons
US4599473A · kind A · utility
9Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1983 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Dec 19, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the selective alkylation of monoalkylbenzene into dialkylbenzenes wherein the para isomer of the disubstituted product is present in a concentration greater than in a thermodynamic equilibrium is provided. The method comprises passing the monoalkylbenzene and an alkylating agent capable of methylation, ethylation or propylation through a reaction zone containing an unmodified crystalline silica catalyst of the silicalite type having the monoclinic symmetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.