Homogeneous coordination compounds as oxidation catalysts
US4758682A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1985 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Nov 1, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/842
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A complex of a tetradentate tetraanionic ligand L of the formula: ##STR1## and a metal, preferably a transition metal, is described where Z is an anionic oxidation reistant metal complexing group, Ch is an oxidation resistant chelate group containing 1 to 4 chain atoms and Y is hydrogen. The chelate and ring Z-Ch-M-Z functional groups Z, such as N or O, are resistant to oxidation and the ring contains 4 to 7 preferably 5 to 6 chain atoms. An osmium complex containing two pyridine ligands is an oxidation catalyst. Further activation by anodic oxidation and heating to a temperature exceeding 30.degree. C. greatly increases catalytic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.