Title:
【発明の名称】ビス-クラウンカリックス〔4〕アレン、それらの製造方法並びにそれらを使用するセシウムおよびアクチニドの選択抽出方法
Document Type and Number:
Japanese Patent JP3257797
Kind Code:
B2
Abstract:
PCT No. PCT/FR93/01161 Sec. 371 Date May 17, 1995 Sec. 102(e) Date May 17, 1995 PCT Filed Nov. 25, 1993 PCT Pub. No. WO94/12502 PCT Pub. Date Jun. 9, 1994The invention relates to bis-crown calix[4]arenes, their preparation process and their use for the selective extraction of cesium and actinides. Bis-crown calix[4]arenes are in accordance with the formula: (I) in which R1 and R2 respectively represent X(C2H4X)m and X(C2H4X)n with X=O, NH and/or N(CH3), m and n=3, 4, 5 or 6, or X (C2H4X)p/2XY(C2H4X)p/2 with p=2 or 4 and Y=cycloalkylene or arylene. These bis-crown calix[4]arenes, whose benzene nuclei are optionally substituted by alkyl groups, can be used as an extracant, e.g. in the form of a liquid membrane, for separating cesium from acid solutions containing sodium in a large quantity compared with the cesium quantity, e.g. effluents of irradiated fuel reprocessing plants.
Inventors:
Dozo, Jean-Francois
Asfari, Zuell
Ill
Visen, Jack
Asfari, Zuell
Ill
Visen, Jack
Application Number:
JP51284994A
Publication Date:
February 18, 2002
Filing Date:
November 25, 1993
Export Citation:
Assignee:
Commissare a Renaji Atomic
International Classes:
B01D11/04; B01D61/38; C01G17/00; C01G56/00; C07D493/08; C22B3/26; C22B3/36; C22B26/00; C22B60/02; G21C19/46; (IPC1-7): C07D493/08; B01D11/04; C01G17/00; C01G56/00
Attorney, Agent or Firm:
Taira Hagino (5 outside)