http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112899707-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B3-03 |
| filingDate | 2020-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112899707-B |
| titleOfInvention | Preparation method of hexafluoroethane |
| abstract | The invention relates to a preparation method of hexafluoroethane, belonging to the technical field of fine fluorine chemical industry. Uniformly mixing hydrogen fluoride and alkali metal fluoride at the temperature of-30-0 ℃, adding an electrolysis raw material at the temperature of 0-5 ℃, carrying out an electrolysis reaction at the electrolysis temperature of-5-20 ℃ and the electrolysis voltage of 5-7V, collecting a gas-phase product generated by the electrolysis reaction by using a low-temperature cold trap, wherein the boiling point of the gas-phase product is-78 ℃, and preparing a crude hexafluoroethane product with the purity of more than 90%; further purification gave hexafluoroethane of purity greater than 99.5%. The method comprises the steps of preparing hexafluoroethane by using an electrolytic fluorination method by using alkali metal propionate as a raw material, hydrogen fluoride as a fluorination reagent and alkali metal fluoride as a conductive medium; the method has originality, nontoxic raw materials, low price and easy obtainment, a small amount of carbon tetrafluoride is used as a byproduct, other compounds with similar boiling points to chlorine compounds are not used, and the crude product is easy to purify to an electronic grade. |
| priorityDate | 2020-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.