Catalyst and method having selectivity to isobutyraldehyde via catalyst induction
US8921608B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | May 22, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/822
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Industrially relevant product selectivities and reaction rates are obtained from rhodium catalyzed hydroformylation of propylene via the use of a novel induction period in which the supramolecular ligand assembly, the rhodium precatalyst and an initial substrate are allowed to form a hydroformylation catalyst that is more selective toward branched aldehydes. Upon heating this incubated mixture and addition of propylene, iso-butyraldehyde is obtained in higher concentrations and rates that are otherwise unattainable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.