Title:
【発明の名称】少なくとも1種類の酸素化希土類化合物を含有する有機ゾル、該ゾルを合成する方法、および触媒作用のための該ゾルの用途
Document Type and Number:
Japanese Patent JP3447746
Kind Code:
B2
Abstract:
PCT No. PCT/FR96/01852 Sec. 371 Date Nov. 19, 1998 Sec. 102(e) Date Nov. 19, 1998 PCT Filed Nov. 22, 1996 PCT Pub. No. WO97/19022 PCT Pub. Date May 29, 1997A method for processing soot containing one or more rare earths, wherein said soot is contacted with an oxygen-containing gas, is disclosed. The method comprises (a) preparing an aqueous phase comprising a dispersion of at least one oxygenated metal compound; (b) simultaneously or consecutively contacting a suspension from step (a) with an organic phase including at least one amphiphilic agent and preferably an organic mixture or compound as the solvent; and +E,crc c+EE recovering the organic phase. Said oxygenated metal compound is produced by means of a method according to which a solution including at least one soluble rare-earth salt, usually an acetate and/or a chloride, is prepared; the solution is contacted with a basic medium and the resulting reaction mixture is maintained at a basic pH; and the precipitate formed by atomization or freeze-drying is recovered. Said method is useful in inorganic synthesis and catalysis.
Inventors:
Birshan, Thierry
Macaudier, Pierre
Toure, Olivier
Macaudier, Pierre
Toure, Olivier
Application Number:
JP51945797A
Publication Date:
September 16, 2003
Filing Date:
November 22, 1996
Export Citation:
Assignee:
Rhodia stain
International Classes:
B01J13/00; B01J23/10; B01J23/76; C01F17/241; C01G3/00; C01G25/00; C01G45/00; C01G49/00; C10L1/10; C10L1/30; C10L10/02; C10L10/06; (IPC1-7): C01F17/00; B01J23/10; B01J23/76; C10L1/30
Domestic Patent References:
| JP7284651A |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)