发明名称 |
RARE EARTH PHOSPHATE COLLOIDAL DISPERSION AND PREPARATION METHOD. |
摘要 |
<p>The invention concerns a rare earth colloidal dispersion and its preparation method. The dispersion is characterised in that it comprises anisotropic and disaggregated particle, or capable of being disaggregated, of at least a rare earth and a water-soluble monovalent acid anion having a pKa of at least 2.5. It is prepared by a method which consists in: mixing a solution of at least a rare earth salt with phosphate ions controlling the pH of the reaction medium at a value ranging between 4 and 9 and in the presence of a water-soluble monovalent acid having a pH of at least 2.5; optionally ripening the resulting mixture; separating the precipitate from the reaction medium: re-dispersing in water said precipitate.</p> |
申请公布号 |
MXPA03005107(A) |
申请公布日期 |
2004.10.15 |
申请号 |
MX2003PA05107 |
申请日期 |
2001.12.07 |
申请人 |
RHODIA ELECTRONICS AND CATALYSIS |
发明人 |
CHANE-CHING, JEAN-YVES |
分类号 |
B01J13/00;C01B25/26;(IPC1-7):B01J13/00 |
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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