http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2373589-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f9d2cfc82b2a3f45b2b7d25859b0d198 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cf67c8b86ec45f29e775125f845514e7 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21G2001-0089 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21G1-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21G1-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21G1-00 |
| filingDate | 2008-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2009-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0dbc1546f2b12d87c6de60516067a94e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d539a3a8d1a39382e3f690d9820a0abe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d685a55ab7205ef039978767de398359 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_11cebf239fd31f54150c6e5827ba8629 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a05a17c88eec285802e489b06f782661 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86bbfa8654226560073e2a410fae3001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89baba528bbbe5a772eef6dbf09537ed http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_163dceb01b9412baab96b310eefaaeac |
| publicationDate | 2009-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2373589-C1 |
| titleOfInvention | Method of producing actinium-225 and radium isotopes and target for realising said method (versions) |
| abstract | FIELD: nuclear physics. n SUBSTANCE: invention relates to nuclear technology and radiochemistry and is meant for synthesis and releasing radioactive isotopes for medical purposes. The method of producing actinium-225 involves exposing a target to a high-intensity beam of accelerated charged particles, where the target contains thorium metal in form of one or more solid monoliths with thickness ranging from 2 to 30 mm in a sealed shell, made from material which does not react with thorium and cooling liquid at high thermal and radiation loads and subsequent extraction of radium isotopes and actinium-225 from the exposed thorium. The material of the shell is niobium, high-alloy austenitic steel, hot-rolled molybdenum, and nonporous graphite, coated outside with a protective layer of nickel. Radium-223 and other radium isotopes can be sublimed from molten thorium with addition of lanthanum metal at temperature not below 1100°C, separated from other sublimed products and purified through liquid extraction chromatography using crown ether based sorbents. To extract actinium, exposed thorium metal is dissolved in concentrated nitric acid. Thorium and a range of impurities are extracted using tributylphosphate or a 0.1 to 0.5 M solution of tri-n-octylphosphine oxide in a non-polar organic solvent or 1-5 M solution tributylphosphate in a non-polar organic solvent from an aqueous solution with nitric acid concentration of 3 to 8 M. The aqueous phase, which contains actinium, is evaporated to dryness with addition of concentrated perchloric acid or other oxidising agents. Extraction chromatography is then carried out in a 3 to 8 M solution of nitric acid using a sorbent with carbamoyl phosphine oxide, and actinium is washed with a 3 to 8 M solution of nitric acid. n EFFECT: increased output and radio nuclide purity of radium and actinium-225. n 18 cl, 11 dwg |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2513206-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2573527-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2777655-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2781190-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9287015-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2725414-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2742138-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2549881-C2 |
| priorityDate | 2008-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 110.