http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0245279-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_27afc04bbf2d4b864d9a0574c38466f2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-00 |
| filingDate | 1986-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8955e307bf2745a32ba0f13b69b87179 |
| publicationDate | 1987-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0245279-A1 |
| titleOfInvention | PROCESS FOR THE ELECTROCHEMICAL OXIDATION OF CHROMIUM III SOLUTIONS IN SULFURIC ACID IN CHROMIUM VI SOLUTIONS. |
| abstract | The treatment of chromium III solutions in sulfuric acid containing nitric acid, as they occur during the oxidative purification of combustion gases, presents great difficulties or is very expensive. The object of the invention is to create a process in which the current costs for electrolysis are low. The process according to the invention for the electrochemical oxidation of solutions of chromium III in sulfuric acid into solutions of chromium VI lies essentially in the fact that nitric acid, sulfuric acid and chromium are contained in the electrolyte, nitric acid being used as a redox transporter for the oxygen electrode serving as cathode and nitric acid being regenerated by oxygen. Carbon or graphite are used as the cathode material. For the anode, electrodes with a high oxygen overvoltage are used such as, for example, lead dioxide. The cell voltages that can be obtained under these conditions are between 0.9 and 2 volts. This means that the current costs for electrolysis are lowered by about 1/3. |
| priorityDate | 1985-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.