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    • 5. 发明授权
    • Method for the purification of radium from different sources
    • 从不同来源净化镭的方法
    • US08715598B2
    • 2014-05-06
    • US13441803
    • 2012-04-06
    • Eva KabaiJosue M. Moreno BermudezRichard HenkelmannAndreas Türler
    • Eva KabaiJosue M. Moreno BermudezRichard HenkelmannAndreas Türler
    • C01F13/00
    • C22B60/00C22B3/002C22B13/04C22B26/20G21G1/001G21G2001/0094Y02P10/234
    • The invention is directed to a method for the purification of Radium, in particular 226Ra, for target preparation for an essentially pure 225Ac production from available radioactive sources, using an extraction chromatography in order to separate chemically similar elements such as Ba, Sr, and Pb from the desired Ra; wherein said extraction chromatography has an extractant system on the basis of a crown ether. The invention is related to a method for recycling of 226Ra, for target preparation for 225Ac production from radium sources irradiated with accelerated protons (p,2n), after separation of the produced 225Ac. In this method a combination of the above extraction chromatography and a cation exchange chromatography is used. The obtained 226Ra is essentially free of the following chemical contaminants consisting of Ag, Al, As, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Na, Ni, Pb, Sr, V, Zn, and Ba.
    • 本发明涉及一种用于纯化镭(特别是226Ra)的方法,用于使用提取色谱从化学上类似的元素如Ba,Sr和Pb分离用于从可用的放射源制备基本上纯的225Ac产物的目标制备 从所需的Ra; 其中所述提取色谱法具有基于冠醚的萃取剂体系。 本发明涉及一种用于回收226Ra的方法,用于在分离产生的225Ac之后,用加速质子(p,2n)照射的镭源进行225Ac生产的目标制备。 在该方法中,使用上述提取色谱和阳离子交换层析的组合。 得到的226Ra基本上不含由Ag,Al,As,Be,Bi,Ca,Cd,Co,Cr,Cu,Fe,Ga,K,Li,Mg,Mn,Na,Ni,Pb组成的以下化学污染物 ,Sr,V,Zn和Ba。
    • 6. 发明授权
    • Method for the purification of radium from different sources
    • 从不同来源净化镭的方法
    • US08153087B2
    • 2012-04-10
    • US12398346
    • 2009-03-05
    • Eva KabaiJosue Manuel Moreno BermudezRichard HenkelmannAndreas Turler
    • Eva KabaiJosue Manuel Moreno BermudezRichard HenkelmannAndreas Turler
    • C01F13/00
    • C22B60/00C22B3/002C22B13/04C22B26/20G21G1/001G21G2001/0094Y02P10/234
    • The present application is directed to a method for the purification of Radium, in particular 226Ra, for target preparation for an essentially pure 225Ac production from available radioactive sources, using an extraction chromatography in order to separate chemically similar elements such as Ba, Sr, and Pb from the desired Ra; wherein said extraction chromatography has an extractant system on the basis of a crown ether. The invention is further related to a method for recycling of 226Ra, for target preparation for 225Ac production from radium sources irradiated with accelerated protons (p,2n), after separation of the produced 225AC. In this method a combination of the above extraction chromatography and a cation exchange chromatography is used. The obtained 226Ra is essentially free of the following chemical contaminants consisting of Ag, Al, As, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Na, Ni, Pb, Sr, V, Zn, and Ba.
    • 本申请涉及用于纯化镭(特别是226Ra)的方法,用于使用提取色谱法将化学上类似的元素如Ba,Sr和 Pb从所需的Ra; 其中所述提取色谱法具有基于冠醚的萃取剂体系。 本发明进一步涉及一种用于回收226Ra的方法,用于在分离生成的225AC之后,用加速质子(p,2n)照射的镭源的225Ac生产的目标制备。 在该方法中,使用上述提取色谱和阳离子交换层析的组合。 得到的226Ra基本上不含由Ag,Al,As,Be,Bi,Ca,Cd,Co,Cr,Cu,Fe,Ga,K,Li,Mg,Mn,Na,Ni,Pb组成的以下化学污染物 ,Sr,V,Zn和Ba。
    • 8. 发明授权
    • Calixarenes and their use for sequestration of metals
    • 杯芳烃及其用于金属螯合的用途
    • US06297395B1
    • 2001-10-02
    • US09460237
    • 1999-12-13
    • Graeme P. NicholsonMark J. KanGareth WilliamsMichael G. DrewPaul D. Beer
    • Graeme P. NicholsonMark J. KanGareth WilliamsMichael G. DrewPaul D. Beer
    • C07C22900
    • C07C235/20C07C235/24C07C327/42C07C2603/92C07D273/00C22B3/002G01N27/3335Y02P10/234
    • Disclosed are “acid-amide” calixarenes of formula (I) wherein: L is [—CH2—] or [—O—CH2—O—] and may be the same or different between each aryl group; R5 is H, halogen, or C1-C10 aliphatic hydrocarbyl group, C6-C20 aryl group, C6-C10 hydrocarbyaryl group, any of which may optionally be substituted by one or more halo or oxo groups or interrupted by one or more oxo groups, and R5 may be the same or different on each aryl group; R1 comprises an optionally protected carboxy group; two groups out of R2, R3, and R4 are H; the one group out of R2, R3, and R4 not being H comprises an amide group. The amide group may be linked to a second calixarene to form a dimer. Also disclosed are methods of use of such calixarenes for the purposes of metal sequestration, especially of lanthanides and actinides. Also disclosed are calixarene dimer derivatives of the calixarenes of the invention. Also disclosed are processes for preparing the calixarenes and dimers.
    • 公开了式(I)的“酸酰胺”杯芳烃,其中:L是[-CH 2 - ]或[-O-CH 2 -O-],并且在每个芳基之间可以相同或不同; R5是H,卤素或C1-C10脂族烃基,C6-C20芳基,C6-C10烃氧基,其中任何一个可以任选地被一个或多个卤代或氧代基取代或被一个或多个氧代基中断, 并且R 5可以在每个芳基上相同或不同; R1包含任选保护的羧基; R2,R3和R4中的两个基团是H; R2,R3和R4不为H的一个基团包含酰胺基。 酰胺基团可以与第二杯咖啡连接以形成二聚体。 还公开了使用这种杯芳烃用于金属螯合的方法,特别是镧系元素和锕系元素的方法。 还公开了本发明的杯芳烃的杯芳烃二聚体衍生物。 还公开了制备杯芳烃和二聚体的方法。
    • 9. 发明授权
    • Calixarene crown ether solvent composition and use thereof for extraction of cesium from alkaline waste solutions
    • 杯芳烃冠醚溶剂组合物及其用于从碱性废溶液中萃取铯的用途
    • US06174503B1
    • 2001-01-16
    • US09146800
    • 1998-09-03
    • Bruce A. MoyerRichard A. SachlebenPeter V. BonnesenDerek J. Presley
    • Bruce A. MoyerRichard A. SachlebenPeter V. BonnesenDerek J. Presley
    • C22B2610
    • C22B3/002C22B26/10Y02P10/234
    • A solvent composition and corresponding method for extracting cesium (Cs) from aqueous neutral and alkaline solutions containing Cs and perhaps other competing metal ions is described. The method entails contacting an aqueous Cs-containing solution with a solvent consisting of a specific class of lipophilic calix[4]arene-crown ether extractants dissolved in a hydrocarbon-based diluent containing a specific class of alkyl-aromatic ether alcohols as modifiers. The cesium values are subsequently recovered from the extractant, and the solvent subsequently recycled, by contacting the Cs-containing organic solution with an aqueous stripping solution. This combined extraction and stripping method is especially useful as a process for removal of the radionuclide cesium-137 from highly alkaline waste solutions which are also very concentrated in sodium and potassium. No pre-treatment of the waste solution is necessary, and the cesium can be recovered using a safe and inexpensive stripping process using water, dilute (millimolar) acid solutions, or dilute (millimolar) salt solutions. An important application for this invention would be treatment of alkaline nuclear tank wastes. Alternatively, the invention could be applied to decontamination of acidic reprocessing wastes containing cesium-137.
    • 描述了从含有Cs和可能的其它竞争性金属离子的中性和碱性溶液中提取铯(Cs)的溶剂组成和相应方法。 该方法需要使含水的含Cs溶液与溶解在含有特定类别的烷基 - 芳族醚醇作为改性剂的烃基稀释剂中的特定类别的亲油性杯[4]芳烃 - 冠醚萃取剂组成的溶剂接触。 随后从萃取剂中回收铯值,然后通过使含Cs的有机溶液与水性剥离溶液接触,随后再循环溶剂。 这种组合萃取和汽提方法特别适用于从高碱性废液中去除铯-137的方法,该方法也非常浓缩在钠和钾中。 不需要对废溶液进行预处理,并且可以使用水,稀(毫摩尔)酸溶液或稀(毫摩尔)盐溶液,使用安全且廉价的汽提方法回收铯。 本发明的重要应用是碱性核罐废物的处理。 或者,本发明可以应用于含有铯-137的酸性再处理废物的去污。