Process for the activation of siliceous catalysts
US4656149A · kind A · utility
1Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1985 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Oct 29, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the activation of siliceous catalysts selected among zeolites with a high silica content, organosilicates, polymorphous crystalline silicas and zeolites deactivated by treatment with water vapor. According to the invention, the catalyst is activated by reacting aluminum chloride and hydrogen chloride, both in gaseous phase with the catalyst, at a temperature between about 150.degree. and 600.degree. C. in the same reactor, the possible excess of gaseous hydrogen chloride being removed by means of an inert gas, such as nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.