http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107032355-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-00 |
| filingDate | 2017-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107032355-B |
| titleOfInvention | A method of preparing silicotungstic heteropolyacid solution |
| abstract | The invention discloses a kind of method for preparing silicotungstic heteropolyacid solution, including the following steps: tungstate solution (or mixed solution of tungsten and silicon) carries out first segment bipolar membrane electrodialysis, and solution ph is made to be reduced to 5.5~7.5；One section of electrodialysis solution is with progress thermal conversion (or solution after one section of electrodialysis of mixed solution of tungsten and silicon is directly heated conversion) after silicon；Second segment bipolar membrane electrodialysis is carried out after solution is cooling, control pH value is 1.0~3.0, obtains silicotungstic heteropolyacid salting liquid；Silicotungstic heteropolyacid solution is obtained after ion exchange transition removal of impurities.The present invention does not consume inorganic acid, does not introduce impurity anions, not only realizes the acidification of tungstate solution, also achieves the removing of most of salt cation, greatly reduces the burden that subsequent ion exchange removes salt cation.The silicotungstic heteropolyacid solution that the present invention obtains can be used for preparing the silicotungstic heteropolyacid product of high-quality, be a kind of silicotungstic heteropolyacid solution preparation process of clean and effective. |
| priorityDate | 2017-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.