Cathode for reduction of carbon dioxide and method for manufacturing such a cathode
US5804045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Apr 18, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B3/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a cathode based on a transition metal (M) for reduction of carbon dioxide into formate in a hydro-organic or purely aqueous medium, particularly for air decarbonation applications for industry and in general for atmospheric pollution control and regeneration of breathable air in a confined or unconfined environment, characterized by including a transition metal molecular complex formed of: PA1 a bidentate ligand functional by identical or different electroattractive groups A and A', the ligand comprising a basic molecular group allowing the reduction redox potential of the complex to be reduced in a range of -1.40 to +0.80 V relative to an Ag/Ag.sup.+ reference electrode, at least one of the groups A or A' being electropolymerizable; PA1 two identical or different labile groups Y and Y' with trans stereochemistry taken from the following series: halide anion (Cl.sup.-, Br.sup.-, I.sup.-), acetate anion (CH.sub.3 COO.sup.-), neutral acetonitrile or dimethylformamide or dimethylsulfoxide molecule; PA1 two identical or different stabilizing ligands Z and Z' with cis stereochemistry, representing a donor and attractor group of the carbonyl (--CO) or phosphine t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.