| abstract |
PCT No. PCT/FR96/00472 Sec. 371 Date Sep. 18, 1997 Sec. 102(e) Date Sep. 18, 1997 PCT Filed Mar. 28, 1996 PCT Pub. No. WO96/30300 PCT Pub. Date Oct. 3, 1996The invention relates to novel thorium phosphates, their preparation process and their use for the storage of radioactive products. These novel thorium phosphates comply with the formulas Th4P6O23 (I) or Th4-xM4x/vP6O23 (III) in which: M is a monovalent, divalent, trivalent or tetravalent cation, v represents the valency state of the cation and is equal to 1, 2, 3 or 4, and x is such that: 0<x</=3 when v=4 0<x</=0.26 when v=3 0<x</=0.1 when v=2, and 0<x</=0.036 when v=1. The cation M can in particular be a radioactive element. |