Method for promoting the activity of cation-exchangeable layered clay and zeolite catalysts in proton-catalysed reactions
US4440958A · kind A · utility
7Cited by
10References
13Claims
0Family size
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Key dates
| Filing date | Jul 29, 1981 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The activity of cation-exchangeable layered clay or crystalline aluminosilicate catalyst in esterification, etherification, hydration, and cracking reactions is promoted by addition of a strong acid such as sulphuric acid, phosphoric acid, hydrochloric acid, hydrofluoric acid or para-toluene sulphonic acid. The further addition of water to the reaction can extend the life of the clay catalyst and in some cases its catalytic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.