| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5202091df9de019fc995f2d266f9ecc2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-60 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-0081 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-30 |
| filingDate |
1983-05-02^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1984-05-29^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c6619da54beda2a96e92e4d5640e267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c0ade0645aca07261a7f7613c38d7113 |
| publicationDate |
1984-05-29^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4451338-A |
| titleOfInvention |
Process for making a calcium/sodium ferrate adduct by the electrochemical formation of sodium ferrate |
| abstract |
Described is a process for making a calcium/sodium ferrate adduct with sodium ferrate in a divided-type electrolysis cell. The anolyte chamber of the cell is charged with an aqueous solution of sodium hydroxide and a sodium ferrate-stabilizing proportion of at least one sodium halide salt. The anolyte chamber additionally contains ferric ions [Fe(III)]. The catholyte chamber contains an aqueous sodium hydroxide solution during operation. The source of ferric ion in the anolyte may be either an iron-containing anode or at least one iron-containing compound present in the anolyte solution or both. The preferred material separating the anolyte chamber from the catholyte chamber is comprised of a gas- and hydraulic-impermeable, ionically-conductive, chemically-stable ionomeric film (e.g., a cation-exchange membrane with carboxylic, sulfonic or other inorganic exchange sites). Sodium ferrate is prepared in the anolyte chamber by passing an electric current and impressing a voltage between the anode and cathode of the cell. During electrolysis, sodium ferrate forms in the aqueous sodium hydroxide anolyte. This anolyte is reacted with a calcium compound to produce a calcium/sodium ferrate adduct. Alternatively the sodium ferrate may be first recovered in a solid form and then reacted with a calcium compound to produce said adduct. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003159942-A1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011076223-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8961921-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5181993-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005271575-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6387569-B1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003121569-A1 |
| priorityDate |
1981-03-23^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |