| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_229fd6f7a62130a11fcb15a6e5ec8e77 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-04 |
| filingDate |
1997-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32ec6ee83a5035fc93e96126c8319b75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dff37f664823075fbe07c023fade6618
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f52e5d6f4494697c5f1679e5350be32f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55601bd85aea81a2a28a26e0b3cd80fe |
| publicationDate |
1999-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H11100622-A |
| titleOfInvention |
Separation and recovery method for rare earth metal ions |
| abstract |
(57) Abstract: A rare earth metal ion is separated and extracted with a high selectivity and a high extraction rate from an aqueous solution containing at least two or more rare earth metal ions selected from Pr, Nd, Y and Er. SOLUTION: When separating and extracting rare earth metal ions using a solvent containing an extraction reagent bis (2-ethylhexyl) phosphinic acid, the pH value at the time of extraction is adjusted so that the pH value after solvent extraction becomes 3 or more. This solves the above problem. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002536550-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016186108-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11155897-B2 |
| priorityDate |
1997-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |