发明名称 |
Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis |
摘要 |
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.
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申请公布号 |
US6136048(A) |
申请公布日期 |
2000.10.24 |
申请号 |
US19980068925 |
申请日期 |
1998.11.19 |
申请人 |
RHODIA CHIMIE |
发明人 |
BIRCHEM, THIERRY;MACAUDIERE, PIERRE;TOURET, OLIVIER |
分类号 |
B01J13/00;B01J23/10;B01J23/76;C01F17/00;C01G3/00;C01G25/00;C01G45/00;C01G49/00;C10L1/10;C10L1/30;C10L10/02;C10L10/06;(IPC1-7):C10L1/30 |
主分类号 |
B01J13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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