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1. (WO2019025714) BIFUNCTIONAL COMPOUNDS CONTAINING THIOPHOSPHINE FUNCTION, OF USE AS EXTRACTANTS OF URANIUM(VI), PROCESSES FOR THE SYNTHESIS THEREOF AND USES THEREOF
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Pub. No.: WO/2019/025714 International Application No.: PCT/FR2018/051957
Publication Date: 07.02.2019 International Filing Date: 30.07.2018
IPC:
C07F 9/53 (2006.01) ,C22B 3/26 (2006.01) ,C22B 60/02 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
F
ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
9
Compounds containing elements of the 5th Group of the Periodic System
02
Phosphorus compounds
28
with one or more P-C bonds
50
Organo-phosphines
53
Organo-phosphine oxides; Organo-phosphine sulfides
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
20
Treatment or purification of solutions, e.g. obtained by leaching
26
by liquid-liquid extraction using organic compounds
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
60
Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
02
Obtaining thorium, uranium or other actinides
Applicants:
ORANO MINING [FR/FR]; TOUR AREVA 1 place Jean Millier 92400 COURBEVOIE, FR
UNIVERSITE DE BOURGOGNE [FR/FR]; Esplanade Erasme BP 27877 21000 DIJON, FR
Inventors:
BELTRAMI, Denis; FR
MOKHTARI, Hamid; FR
THIRY, Jacques; FR
CHAGNES, Alexandre; FR
COTE, Gérard; FR
JUGE, Sylvain; FR
BAYARDON, Jérôme; FR
LAUREANO, Hugo; FR
REMOND, Emmanuelle; FR
Agent:
GUERRE, Fabien; FR
Priority Data:
17 5730631.07.2017FR
Title (EN) BIFUNCTIONAL COMPOUNDS CONTAINING THIOPHOSPHINE FUNCTION, OF USE AS EXTRACTANTS OF URANIUM(VI), PROCESSES FOR THE SYNTHESIS THEREOF AND USES THEREOF
(FR) COMPOSÉS BIFONCTIONNELS À FONCTION THIOPHOSPHINE, UTILES COMME EXTRACTANTS DE L'URANIUM(VI), LEURS PROCÉDÉS DE SYNTHÈSE ET LEURS UTILISATIONS
Abstract:
(EN) The invention relates to bifunctional compounds which have a thiophosphine function and which are capable of highly effectively extracting uranium(VI) from an aqueous solution of phosphoric acid, and do so with a high selectivity with respect to iron. These compounds correspond to the general formula (I): wherein R1 and R2, which are identical or different, each represent a linear or branched C2 to C16 alkyl group; R3 represents a linear or branched C1 to C15 alkyl group; Z represents O or S; and R4 represents H, a linear or branched C1 to C16 alkyl group, or a monocyclic heteroaromatic or aromatic group. The invention also relates to processes making it possible to synthesize these compounds, to the uses thereof as extractants of uranium(VI) and especially for extracting uranium(VI) from an aqueous solution of phosphoric acid such as a solution resulting from the attack of a natural phosphate by sulfuric acid, and also to a process making it possible to recover the uranium(VI) present in an aqueous solution of phosphoric acid resulting from the attack of a natural phosphate by sulfuric acid.
(FR) L'invention se rapporte à des composés bifonctionnels qui présentent une fonction thiophosphine et qui sont capables d'extraire très efficacement l'uranium(VI) d'une solution aqueuse d'acide phosphorique et ce, avec une forte sélectivité vis-à-vis du fer.Ces composés répondent à la formule générale (I): dans laquelle R1 et R2, identiques ou différents, représentent chacun un groupe alkyle linéaire ou ramifié en C2 à C16; R3 représente un groupe alkyle linéaire ou ramifié en C1 à C15; Z représente O ou S; et R4 représente H, un groupe alkyle linéaire ou ramifié en C1 à C16, un groupe aromatique ou hétéroaromatique monocyclique. L'invention se rapporte également à des procédés permettant de synthétiser ces composés, à leurs utilisations comme extractants de l'uranium(VI) et, notamment, pour extraire l'uranium(VI) d'une solution aqueuse d'acide phosphorique telle qu'une solution issue de l'attaque d'un phosphate naturel par l'acide sulfurique, ainsi qu'à un procédé permettant de récupérer l'uranium(VI) présent dans une solution aqueuse d'acide phosphorique issue de l'attaque d'un phosphate naturel par l'acide sulfurique.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)