http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1151844-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f659e4123f9076ff480b4cd5cffd4c40 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G30-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G30-00 |
| filingDate | 1980-01-31^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1983-08-16^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46e30d79d41427a702938cd496e168b1 |
| publicationDate | 1983-08-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1151844-A |
| titleOfInvention | Method of preparing antimony pentoxide |
| abstract | ABSTRACT OF THE DISCLOSURE A method of preparing antimony pentoxide from solids containing antimony sulfides is described. The method comprises the steps of: (a) leaching the antimony values from the solids with an aqueous potassium hydroxide solution to form an anti-mony containing solution and a gangue, (b) oxidizing the anti-mony present in the leaching solution to a pentavalent antimony, (c) separating the oxidized solution from the gangue, and (d) adding an inorganic acid to the solution to reduce the pH of the solution to about 5-7 whereby antimony pentoxide is pre-cipitated from the solution. In a preferred embodiment, the oxidation of the solution is conducted in the presence of a catalyst which comprises a water-soluble copper salt, a quinone, a hydroquinone or mixtures of one or more of these. |
| priorityDate | 1979-02-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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