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    PHOSPHATE DE CERIUM ET/OU DE TERBIUM, EVENTUELLEMENT AVEC DU LANTHANE, LUMINOPHORE ISSU DE CE PHOSPHATE ET PROCEDES DE PREPARATION DE CEUX-CI
    4.
    发明公开
    PHOSPHATE DE CERIUM ET/OU DE TERBIUM, EVENTUELLEMENT AVEC DU LANTHANE, LUMINOPHORE ISSU DE CE PHOSPHATE ET PROCEDES DE PREPARATION DE CEUX-CI 审中-公开
    CE和/或TERBIUMPHOSPHAT WHICH可能包含镧，荧光从用于生产磷酸盐和过程

    公开(公告)号：EP2370545A2

    公开(公告)日：2011-10-05

    申请号：EP09752386.4

    申请日：2009-11-18

    申请人： Rhodia Opérations

    发明人： BUISSETTE, Valérie ,  LE-MERCIER, Thierry

    IPC分类号： C09K11/81 ,  C01B25/45 ,  C09K11/77

    CPC分类号： C09K11/7778 ,  C01B25/37 ,  C01B25/45

    摘要： The invention relates to a rare earth element phosphate (Ln), where Ln is either at least one rare earth element selected from cerium and terbium, or lanthanum in combination with at least one of the above two rare earth elements, having a crystalline structure either of the rhabdophane type with a sodium content of 6000 ppm at most, or of the monazite type with a sodium content of 4000 ppm at most. The phosphate is obtained by the precipitation of a rare earth element chloride at a constant pH lower than 2, and then calcining and redispersing the same in hot water. The invention also relates to a phosphor obtained by calcining the phosphate at at least 1000°C.

    摘要翻译： 稀土元素磷酸盐（LN）被描述，worin Ln是以下之一：（1）选自铈和铽，或（2）镧的至少一种稀土类元素选择的在结合上述两种稀土元素中的至少一种 和worin的磷酸盐具有rhabdophane类型具有至多6000ppm的，或的独居石型至多4000ppm的钠含量的钠含量的任一结晶结构。 磷酸酯可通过一种稀土元素氯化物沉淀在恒定的pH低于2来获得，然后煅烧和在热水中再分散是相同的。 因此描述通过在至少1000℃煅烧该磷酸盐而获得的磷。

    DISPERSION COLLOÏDALE D'UN BORATE DE TERRE RARE, SON PROCEDE DE PREPARATION ET SON UTILISATION COMME LUMINOPHORE
    5.
    发明公开
    DISPERSION COLLOÏDALE D'UN BORATE DE TERRE RARE, SON PROCEDE DE PREPARATION ET SON UTILISATION COMME LUMINOPHORE 审中-公开
    胶体分散SELTENERDBORATS，你的进程及其作为荧光

    公开(公告)号：EP2007847A1

    公开(公告)日：2008-12-31

    申请号：EP07712125.9

    申请日：2007-01-29

    申请人： Rhodia Opérations

    发明人： BUISSETTE, Valérie ,  LE-MERCIER, Thierry ,  FAJARDIE, Franck

    IPC分类号： C09K11/78 ,  B01J13/00 ,  C01F17/00

    CPC分类号： B01J13/0013 ,  C01B35/127 ,  C01B35/128 ,  C09K11/02 ,  C09K11/778 ,  C09K11/7797

    摘要： The colloidal dispersion of a rare-earth borate of the invention comprises a liquid phase and colloids of said borate dispersed in this phase, these colloids having a mean hydrodynamic diameter measured by DQEL of at most 200 nm and substantially consisting of an elementary particle with a mean size of less than 100 nm. This dispersion is prepared using a method comprising the following steps: (a) a rare-earth oxide is reacted with a controlled amount of a water-soluble monovalent acid, having a pka of between 2.5 and 5.0; (b) the medium obtained after the reaction is heated; (c) boric acid is added to the medium obtained after the previous step and the mixture obtained is heated at a temperature of at least 170°C; and (d) the solid product is separated from the liquid medium thus obtained, and redispersed in a liquid phase, thereby obtaining the colloidal dispersion. The borate of the invention may be used as a phosphor, especially in the manufacture of a luminescent transparent material.

    PHOSPHATE DE CERIUM ET/OU DE TERBIUM, EVENTUELLEMENT AVEC DU LANTHANE, LUMINOPHORE ISSU DE CE PHOSPHATE ET PROCEDES DE PREPARATION DE CEUX-CI
    8.
    发明公开
    PHOSPHATE DE CERIUM ET/OU DE TERBIUM, EVENTUELLEMENT AVEC DU LANTHANE, LUMINOPHORE ISSU DE CE PHOSPHATE ET PROCEDES DE PREPARATION DE CEUX-CI 审中-公开
    CE和/或TERBIUMPHOSPHAT WHICH可能包含镧，荧光从用于生产磷酸盐和过程

    公开(公告)号：EP2370544A1

    公开(公告)日：2011-10-05

    申请号：EP09752385.6

    申请日：2009-11-18

    申请人： Rhodia Opérations

    发明人： BUISSETTE, Valérie ,  LE-MERCIER, Thierry ,  BERNARD, Joël ,  AURISSERGUES, Franck

    IPC分类号： C09K11/81 ,  C01B25/45

    CPC分类号： C09K11/7778 ,  C01B25/45 ,  Y10T428/2982

    摘要： The invention relates to a rare earth (Ln) phosphate, Ln being either at least one rare earth selected from cerium and terbium, or lanthanum in combination with at least one of the two above-mentioned rare earths, that has a crystalline structure of the rhabdophane type or of the mixed rhabdophane/monazite type with a potassium content of 7000 ppm at most. The phosphate is obtained by the precipitation of a rare earth chloride at a constant pH lower than 2, by calcination at a temperature lower than 500°C and by redispersion in hot water. The invention also relates to a phosphor obtained by the calcination at at least 1000°C of said phosphate.

    摘要翻译： 稀土（LN）磷酸进行了说明，worin Ln是以下之一：（1）至少一种稀土元素选自铈和铽，或（2）镧所选组合与两个上述稀土中的至少一个和worin 该磷酸盐具有rhabdophane类型或混合rhabdophane /独居石型与钾含量7000ppm的至多的晶体结构。 磷酸酯可以通过的稀土氯化物沉淀在恒定的pH低于2在温度低于500℃，并通过在热水中再分散而获得，通过煅烧。 是如此描述在至少1000℃的磷酸的煅烧而获得的磷。