Organoclay triphase catalysts
US5099054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1991 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Feb 14, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method of carrying out organic conversions via heterogeneous phase transfer catalysis by contacting immiscible liquid phases containing respective substances capable of interacting, with a solid catalyst to promote the transfer of reactive species from one liquid phase to another, the improvement comprises employing as catalyst a cation exchanged form of a 2:1 layered silicate clay with layer charge densities in the range of above 0.4 to 2.0 containing an onium ion containing one or more alkyl hydrocarbon chains and maintaining the materials in emulsified form by having a sufficient chain length of an alkyl group relative to the charge density of the clay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.