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1. 发明授权

US11578031B2 Dissymmetric N,N-dialkylamides used particularly for separating uranium(VI) from plutonium(IV), synthesis thereof and uses of same 有权
公开(公告)号：US11578031B2
公开(公告)日：2023-02-14
申请号：US16479830
申请日：2018-01-25
申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES , Orano Cycle , ELECTRICITE DE FRANCE
发明人： Gaëlle Milanole , Emilie Russello , Cécile Marie , Manuel Miguirditchian , Christian Sorel
IPC分类号： C07C233/05 , C22B3/32 , C22B60/02 , C22B60/04 , G21C19/46 , C07C231/02
摘要： A dissymmetric RN,N-dialkylamides of formula (I) in which: R1 represents a linear C1 to C4 alkyl, R2 represents a linear C1 to C10 alkyl, and R3 represents a linear or branched C6 to C15 alkyl, where R3 is different from a n-octyl, n-decyl, n-dodecyl, 2-ethylhexyl and 2-ethyloctyl group when R1 represents a n-butyl group and R2 represents an ethyl group. A method for synthesising the N,N-dialkylamides, and uses of same for extracting uranium and/or plutonium from an aqueous acid solution or for fully or partially separating the uranium from the plutonium contained in an aqueous acid solution and a solution resulting from the dissolution of spent nuclear fuel in nitric acid. A method for treating an aqueous solution resulting from the dissolution of spent nuclear fuel in nitric acid, which allows the uranium and the plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle.

2. 发明申请

US20200232067A1 METHOD FOR RECYCLING PLUTONIUM FROM SPENT RADIOACTIVE FUEL 审中-公开
公开(公告)号：US20200232067A1
公开(公告)日：2020-07-23
申请号：US16489727
申请日：2017-03-22
申请人： CHINA INSTITUTE OF ATOMIC ENERGY
发明人： Chen ZUO , Weifang ZHENG , Taihong YAN
IPC分类号： C22B60/04 , C01G56/00 , C22B7/00 , G21C19/46
摘要： The present invention relates to a method for recovering plutonium from spent radioactive fuel. In one embodiment, the method comprises steps of extracting tetravalent plutonium from an aqueous solution of the spent radioactive fuel using a first organic solvent comprising tributyl phosphate; reducing tetravalent plutonium to trivalent plutonium by adding to an organic phase a second organic solvent comprising dimethylhydroxylamine; and stripping plutonium into the aqueous phase for recycling by adding an aqueous dilute acid solution into an organic phase. The method can significantly improve the efficiency of recovering plutonium from spent radioactive fuel compared with HAN stripping, and at the same time, can avoid the problems resulting from U(IV) reduction and extraction.

3. 发明申请

US20140030172A1 2,9-DIPYRIDYL-1,10-PHENANTHROLINE DERIVATIVES USEFUL AS ACTINIDE LIGANDS, METHOD FOR SYNTHESIZING SAME, AND USES THEREOF 有权
标题翻译：用作丙二酸配位体的2,9-二吡啶-1,10-苯并呋喃衍生物，其合成方法及其用途
公开(公告)号：US20140030172A1
公开(公告)日：2014-01-30
申请号：US14009292
申请日：2012-03-28
申请人： Julia Bisson , Marie-Christine Charbonnel , Nathalie Boubals , Manuel Miguirditchian , Denis Guillaneux , Dominique Guillaumont , Cecile Marie , Didier Dubreuil , Muriel Pipelier , Virginie Blot
发明人： Julia Bisson , Marie-Christine Charbonnel , Nathalie Boubals , Manuel Miguirditchian , Denis Guillaneux , Dominique Guillaumont , Cecile Marie , Didier Dubreuil , Muriel Pipelier , Virginie Blot
IPC分类号： C22B60/02 , C22B60/04 , C07D471/04
CPC分类号： C22B60/0295 , C07D471/04 , C22B3/0035 , C22B60/026 , C22B60/04 , G21C19/42 , G21C19/44 , G21C19/46 , Y02P10/234 , Y02W30/882 , Y02W30/883
摘要： The invention relates to novel compounds useful as ligands of actinides and which meet general formula (I) hereinafter: where: R1 and R2═H, a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group; R3, R4, R5 and R6═H; a C1 to C12 hydrocarbon group; a monocyclic aryl or aryl-(C1 to C6)alkyl group; a —NR7R8 or —NR7COR8 group where R7═H, a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group, whilst R8=a C1 to C12 hydrocarbon group, a monocyclic aryl or aryl-(C1 to C6)alkyl group; an —OR9 or —SR9 group where R9=a C1 to C12 hydrocarbon group, a monocyclic C6 aryl or aryl-(C1 to C6)alkyl group. A further subject of the invention is a method for synthesizing these compounds and the uses thereof.
摘要翻译：本发明涉及可用作锕系配体的新化合物，其符合以下通式（I）：其中：R1和R2 = H，C1至C12烃基，单环芳基或芳基 - （C1至C6）烷基; R3，R4，R5和R6 = H; C1〜C12烃基; 单环芳基或芳基 - （C1-C6）烷基; 其中R7 = H，C1-C12烃基，单环芳基或芳基 - （C1-C6）烷基的-NR7R8或-NR7COR8基团，而R8 = C1-C12烃基，单环芳基或芳基 - （ C1〜C6）烷基; 其中R9 = C1-C12烃基，单环C6芳基或芳基 - （C1-C6）烷基的-OR9或-SR9基团。本发明的另一个主题是合成这些化合物的方法及其用途。

4. 发明授权

US06911135B1 Process for separating metals 失效
标题翻译：金属分离方法
公开(公告)号：US06911135B1
公开(公告)日：2005-06-28
申请号：US10049779
申请日：2000-08-18
申请人： Robert Charles Thied , Justine Elizabeth Hatter , Kenneth Richard Seddon , William Robert Pitner , David William Rooney , David Hebditch
发明人： Robert Charles Thied , Justine Elizabeth Hatter , Kenneth Richard Seddon , William Robert Pitner , David William Rooney , David Hebditch
IPC分类号： G21C19/44 , C22B60/02 , C22B60/04 , C25C3/00 , C25C3/34 , G21C19/46 , G21C19/48 , G21F9/06 , C25C1/32
CPC分类号： G21C19/48 , C22B60/0278 , C22B60/04 , C25C3/00 , C25C3/34 , Y02W30/884
摘要： A method for separating a metal from a composition including the metal involves forming an electrolytic cell in which the anode comprises a composition including the metal. The electrolyte is an ionic liquid. A sufficient potential difference is applied between the anode and the cathode to cause the metal to transfer from the anode to the cathode deposited thereon.
摘要翻译：从包含金属的组合物中分离金属的方法包括形成其中阳极包括包含金属的组合物的电解池。电解质是离子液体。在阳极和阴极之间施加足够的电势差使金属从阳极转移到沉积在其上的阴极。

5. 发明授权

US5582706A Electroseparation of actinide and rare earth metals 失效
标题翻译：锕系元素和稀土金属的电分离
公开(公告)号：US5582706A
公开(公告)日：1996-12-10
申请号：US458527
申请日：1995-06-02
申请人： LeRoy F. Grantham , Jerold Guon , David L. Grimmett , Lowell R. McCoy , Jeffery J. Roy
发明人： LeRoy F. Grantham , Jerold Guon , David L. Grimmett , Lowell R. McCoy , Jeffery J. Roy
IPC分类号： C22B60/02 , C22B60/04 , C25C3/34 , G21C19/48
CPC分类号： C22B60/0213 , C22B60/0295 , C22B60/04 , C25C3/34 , G21C19/48 , Y02W30/884
摘要： A pyrochemical process is utilized to recover 99% of the remaining transuranium materials from plutonium-uranium extraction waste. One step of the overall pyrochemical process involves the electrochemical separation of the waste components. A solid anode and a solid cathode are used in this electrochemical separation step to electrorefine in single or multiple steps. The solid anode and solid cathode are selected from certain preferred anodic and cathodic materials. Where multiple electrorefining steps are used to obtain more complete electroseparation, this is achieved by employing in the multiple electrorefining steps both a solid anode, suitably graphite, and a molten metal anode containing a mixture of the actinide and rare earth elements. This results in greater separation than can be realized through electroseparation by use of either anode alone.
摘要翻译：利用热化学工艺从铀 - 铀萃取废物中回收99％的剩余的铀钛材料。整个焦化过程的一个步骤涉及废物组分的电化学分离。在该电化学分离步骤中使用固体阳极和固体阴极，以单步或多步进行电致精制。固体阳极和固体阴极选自某些优选的阳极和阴极材料。当使用多个电解精制步骤来获得更完整的电分离时，这通过在固体阳极，合适的石墨和含有锕系元素和稀土元素的混合物的熔融金属阳极的多个电解精炼步骤中使用来实现。这导致比通过仅使用任一阳极的电分离可以实现的更大的分离。

6. 发明授权

US5118343A Lithium metal reduction of plutonium oxide to produce plutonium metal 失效
标题翻译：锂金属还原氧化钚生产钚金属
公开(公告)号：US5118343A
公开(公告)日：1992-06-02
申请号：US689423
申请日：1991-04-23
申请人： Melvin S. Coops
发明人： Melvin S. Coops
IPC分类号： C22B60/04
CPC分类号： C22B60/04 , Y02P10/212
摘要： A method is described for the chemical reduction of plutonium oxides to plutonium metal by the use of pure lithium metal. Lithium metal is used to reduce plutonium oxide to alpha plutonium metal (alpha-Pu). The lithium oxide by-product is reclaimed by sublimation and converted to the chloride salt, and after electrolysis, is removed as lithium metal. Zinc may be used as a solvent metal to improve thermodynamics of the reduction reaction at lower temperatures. Lithium metal reduction enables plutonium oxide reduction without the production of huge quantities of CaO--CaCl.sub.2 residues normally produced in conventional direct oxide reduction processes.
摘要翻译：描述了通过使用纯锂金属将钚氧化物化学还原成钚金属的方法。锂金属用于将钚氧化物还原成α钚金属（alpha-Pu）。氧化锂副产物通过升华回收并转化为氯化物盐，电解后作为锂金属除去。锌可以用作溶剂金属，以在较低温度下提高还原反应的热力学。锂金属还原可以减少钚氧化，而不会产生通常在常规直接氧化还原过程中产生的大量CaO-CaCl 2残留物。

7. 发明授权

US4906493A Method of preparing coatings of metal carbides and the like 失效
标题翻译：制备金属碳化物等的涂层的方法
公开(公告)号：US4906493A
公开(公告)日：1990-03-06
申请号：US170180
申请日：1988-03-18
申请人： Richard M. Laine
发明人： Richard M. Laine
IPC分类号： B22F3/00 , C01B21/06 , C01B25/08 , C01B31/30 , C01B31/34 , C01B33/06 , C01B35/04 , C04B35/56 , C04B35/58 , C04B35/622 , C04B35/626 , C04B41/51 , C04B41/88 , C22B5/00 , C22B5/20 , C22B25/02 , C22B59/00 , C22B60/02 , C22B60/04 , C22C1/00 , C23C18/02 , C23C18/12
CPC分类号： C04B35/5611 , B22F3/001 , B82Y30/00 , C01B21/0615 , C01B21/0635 , C01B25/08 , C01B31/30 , C01B31/301 , C01B31/305 , C01B31/306 , C01B31/34 , C01B33/06 , C01B35/04 , C04B35/58042 , C04B35/58071 , C04B35/58085 , C04B35/62227 , C04B35/626 , C04B41/5133 , C04B41/88 , C22B25/02 , C22B5/00 , C22B5/20 , C22B59/00 , C22B60/0213 , C22B60/0291 , C22B60/0295 , C22B60/04 , C22C1/00 , C23C18/02 , C23C18/1208 , C23C18/1225 , C23C18/1275 , C01P2002/72 , C01P2002/82 , C01P2002/85 , C01P2004/04 , C01P2004/10 , C01P2004/54 , C01P2004/64 , C01P2006/12 , C01P2006/42 , C01P2006/80 , C01P2006/90
摘要： Coatings of metals, metal alloys, metal carbides, nitrides, borides, silicides and phosphides are provided. A precursor having organic ligands bonded to one or more metal atoms, such precursor having the element X also bonded directly or indirectly to the metal or metals, is pyrolyzed on a substrate surface to give a coating of M.sub.a X.sub.b. M represents a transition, lanthanide or actinide metal or tin, X represents C, N, B, Si, or P, and a and b represent the atomic proportions of M and X. The subscript b may be zero if an alloy or pure metal is to be prepared. The product M.sub.a X.sub.b can be prepared by relatively low temperature pyrolysis and the precursor can be used as a solution or a low melting solid.
摘要翻译：提供金属，金属合金，金属碳化物，氮化物，硼化物，硅化物和磷化物的涂层。具有与一个或多个金属原子结合的有机配体的前体，具有也直接或间接地结合到金属或金属的元素X的前体在基底表面上被热解，得到MaXb的涂层。 M表示过渡态，镧系元素或锕系金属或锡，X表示C，N，B，Si或P，a和b表示M和X的原子比例。如果合金或纯金属准备好了产物MaXb可以通过相对低温的热解制备，并且前体可以用作溶液或低熔点固体。

8. 发明授权

US4741810A Process for reductive plutonium stripping from an organic reprocessing solution into an aqueous, nitric acid solution by use of an electrolytic current 失效
标题翻译：通过使用电解电流从有机再处理溶液中将还原钚汽提到硝酸水溶液中的方法
公开(公告)号：US4741810A
公开(公告)日：1988-05-03
申请号：US681739
申请日：1984-12-14
申请人： Michael Heilgeist , Helmut Schmieder , Klaus Flory
发明人： Michael Heilgeist , Helmut Schmieder , Klaus Flory
IPC分类号： C01G56/00 , C22B3/38 , C22B60/04 , C25B1/00 , G21C19/46
CPC分类号： G21C19/46 , C01G56/001 , C01G56/004 , C22B3/0068 , C22B60/04 , C25B1/00 , Y02P10/234 , Y02W30/883
摘要： A process for reductive plutonium stripping from an organic reprocessing solution into an aqueous, nitric solution by use of an electrolytic current, in which the aqueous solution is free of agents for the stabilization of the reduced valence of the plutonium, a HNO.sub.3 concentration in the range of 0.05 to 1.0 mol/l is established in the aqueous solution, and the reduction of Pu(IV) to Pu(III) is carried out at a maximum temperature of 40.degree. C.
摘要翻译：一种通过使用电解电流从有机后处理溶液中将有机后处理溶液从有机后处理溶液中萃取到硝酸水溶液中的方法，其中水溶液不含稳定钚降低化合价的试剂，HNO 3浓度范围在水溶液中建立0.05〜1.0mol / l，Pu（IV）至Pu（III）的还原最高温度为40℃。

9. 发明授权

US4591488A Process for selective separation of plutonium from uranium and other metals 失效
标题翻译：从铀和其他金属中选择性分离钚的方法
公开(公告)号：US4591488A
公开(公告)日：1986-05-27
申请号：US509193
申请日：1983-06-29
申请人： Klaus Heckmann , Jiri Spurny
发明人： Klaus Heckmann , Jiri Spurny
IPC分类号： B03D1/001 , C01G43/00 , C01G56/00 , C22B60/02 , C22B60/04 , G21C19/46
CPC分类号： C22B60/0278 , B03D1/002 , C01G43/00 , C01G56/001 , C01G56/004 , C22B60/0234 , C22B60/0239 , C22B60/04 , G21C19/46 , Y02W30/883
摘要： A process for selectively separating plutonium from uranium and other metals is disclosed wherein, in order to precipitate and remove the pertaining complexes, use is made of a sufficient quantity of a cationic compound containing at least one group adapted to assert affinity to polar surfaces and containing a radical which has little affinity to water, e.g. surface active agents and the like, and use is made of the capability of Pu.sup.4+ and U.sup.4+ to form nitrato-complexes and of the capability of Pu.sup.4+ and UO.sub.2.sup.2+ to form sulfato-complexes.
摘要翻译：公开了一种从铀和其他金属中选择性分离钚的方法，其中为了沉淀和除去相关复合物，使用足量的阳离子化合物，该阳离子化合物含有至少一个适用于对极性表面的亲和力并含有一个对水没有亲和力的基团，例如表面活性剂等，并且使用Pu4 +和U4 +形成硝酸盐络合物的能力以及Pu4 +和UO22 +形成硫酸盐络合物的能力。

10. 发明授权

US3993728A Bidentate organophosphorus solvent extraction process for actinide recovery and partition 失效
标题翻译：用于锕系元素回收和分配的二齿有机磷溶剂萃取过程
公开(公告)号：US3993728A
公开(公告)日：1976-11-23
申请号：US608378
申请日：1975-08-27
申请人： Wallace W. Schulz
发明人： Wallace W. Schulz
IPC分类号： C22B61/00 , C22B60/02 , C22B60/04 , G21F9/00 , G21F9/06 , B01D11/00
CPC分类号： C22B60/026 , C22B60/0295 , C22B60/04
摘要： A liquid-liquid extraction process for the recovery and partitioning of actinide values from acidic nuclear waste aqueous solutions, the actinide values including trivalent, tetravalent and hexavalent oxidation states is provided and includes the steps of contacting the aqueous solution with a bidentate organophosphorous extractant to extract essentially all of the actinide values into the organic phase. Thereafter the respective actinide fractions are selectively partitioned into separate aqueous solutions by contact with dilute nitric or nitric-hydrofluoric acid solutions. The hexavalent uranium is finally removed from the organic phase by contact with a dilute sodium carbonate solution.
摘要翻译：提供了从酸性核废水水溶液中回收和分配锕系元素值的液液萃取方法，提供了包括三价，四价和六价氧化态的锕系元素值，包括使水溶液与二齿有机磷萃取剂接触以提取的步骤基本上所有的锕系元素都进入有机相。此后，通过与稀硝酸或硝酸 - 氢氟酸溶液的接触将相应的锕系元素分选成分开的水溶液。最终通过与稀碳酸钠溶液接触从有机相中除去六价铀。

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