发明名称 |
PROCEDE DE PREPARATION D'UN BORATE DE TERRE RARE PAR REACTION D'AU MOINS UN SEL DE TERRE RARE, D'ACIDE BORIQUE ET D'UNE BASE |
摘要 |
The invention concerns a method for preparing a rare earth borate by reacting at least one rare earth salt, boric acid and a base. This method is characterised in that a reaction is carried out using excess acid with respect to stoichiometry and in conditions such that the pH of the reaction medium at the end of the reaction is between 6 and 8, the resulting precipitate is recuperated and calcined. The borate obtained has a good phasic purity and can be used as luminophore. |
申请公布号 |
FR2752833(A1) |
申请公布日期 |
1998.03.06 |
申请号 |
FR19960010724 |
申请日期 |
1996.09.03 |
申请人 |
RHONE POULENC CHIMIE |
发明人 |
HUGUENIN DENIS;MACAUDIERE PIERRE;MAHIOU RACHID |
分类号 |
C01B35/12;C09K11/77;C09K11/78 |
主分类号 |
C01B35/12 |
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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