Crown calix .vertline.4.vertline. arenes, their preparation process and
their use for the selective extraction of cesium and actinides
    3.
    发明授权
    Crown calix .vertline.4.vertline. arenes, their preparation process and their use for the selective extraction of cesium and actinides 失效
    皇冠杯| 4 | 芳烃,它们的制备方法及其用于选择性提取铯和锕系元素的用途

    公开(公告)号:US5926687A

    公开(公告)日:1999-07-20

    申请号:US535015

    申请日:1995-10-04

    摘要: The invention relates to crown calix.vertline.4.vertline.arenes, their preparation process and their use for the selective extraction of cesium and actinides. These crown calixl4larenes comply with the formula: ##STR1## in which R.sub.1 represents a group of formula X(C.sub.2 H.sub.4 X).sub.m and X(C.sub.2 H.sub.4 X).sub.n YX(C.sub.2 H.sub.4 X).sub.n with X=O or N(R.sub.4), m=3, 4, 5 or 6, Y=cycloalkylene or arylene and n=1, 2 or 3. These crown.vertline.4.vertline.arenes, whose benzene nuclei are optionally substituted by alkyl groups, can be used as extractants, e.g. in liquid membrane form, for separating cesium from acid solutions containing sodium in a large quantity compared with the cesium quantity, e.g. irradiated fuel reprocessing plant effluents.

    摘要翻译: PCT No.PCT / FR94 / 00432 Sec。 371 1995年10月4日第 102(e)日期1995年10月4日PCT 1994年4月18日PCT PCT。 公开号WO94 / 24138 日期1994年10月27日本发明涉及冠状杯[4]芳烃,其制备方法及其用于选择性提取铯和锕系元素的用途。 这些冠卡利四十四元符合以下公式:其中R1表示X = O或N(R4)的式X(C2H4X)m和X(C2H4X)nYX(C2H4X)n的基团,m = 3,4,5或 6,Y =亚环烷基或亚芳基,n = 1,2或3.这些具有苯核任选被烷基取代的芳烃,可用作萃取剂,例如 以液态膜形式,与铯量相比大量分离含有钠的酸溶液的铯。 辐射燃料后处理厂废水。