发明名称 |
Colloidal dispersion of particles of a rare-earth vanadate or phosphovanadate |
摘要 |
The invention concerns a colloidal dispersion of a vanadate or a phosphovanadate of at least a rare earth comprising either a complex-forming agent having a pK higher than 2.5, or an anion of a monovalent acid, soluble in water and having a pKa ranging between 2.5 and 5. The dispersion is obtained by contacting a colloidal dispersion or a dispersion of initial complexes comprising at least a rare earth compound and at least a complex-forming agent or an anion of said monovalent acid and whereof the pH has been adjusted to a value of at least 7, with vanadate ions, then, in adjusting the pH of the resulting medium to a value of at least 9 and heating.
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申请公布号 |
US2007213413(A1) |
申请公布日期 |
2007.09.13 |
申请号 |
US20070803063 |
申请日期 |
2007.05.11 |
申请人 |
CHANE-CHING JEAN-YVES;LE MERCIER THIERRY |
发明人 |
CHANE-CHING JEAN-YVES;LE MERCIER THIERRY |
分类号 |
C09K3/00;C01B25/45;C01G31/00;C09K11/77;C09K11/81;C09K11/82;C09K11/83 |
主分类号 |
C09K3/00 |
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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