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11.发明授权DISPERSION COLLOIDALE DE PARTICULES D'UN VANADATE OU D'UN PHOSPHO-VANADATE D'UNE TERRE RARE 有权稀土，钒或-PHOSPHOVANADATS颗粒态分散
公开(公告)号：EP1427673B1
公开(公告)日：2007-09-05
申请号：EP02777416.5
申请日：2002-09-10
CPC分类号： B82Y30/00 , C01B25/45 , C01G31/00 , C01G31/006 , C01P2004/64 , C09K11/7708
摘要： The invention concerns a colloidal dispersion of a vanadate or a phosphovanadate of at least a rare earth characterized in that it comprises either a complex-forming agent having a pK (cologarithm of the dissociation constant of the complex formed by the complex-forming agent and said rare earth) higher than 2.5, or an anion of a monovalent acid, soluble in water and having a pKa ranging between 2.5 and 5. In the case of a vanadate dispersion, the particles have an average size of not more than 6 nm. The inventive dispersion is obtained by a method which consists in 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 and, if required, with phosphate ions, then in adjusting the pH of the resulting medium to a value of at least 9 and heating.
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12.发明公开DISPERSION COLLODALE D UN PHOSPHATE DE TERRE RARE, SON PROCEDE DE PREPARATION ET MATERIAU TRANSPARENT LUMINESCENT OBTENU A PARTIR DE CETTE DISPERSION 有权DISPERSION COLLODALE D UN PHOSPHATE DE TERRE RARE，SON PROCEDE DE PREPARATION ET MATERIAU TRANSPARENT LUMINESCENT OBTENU A PARTIR DE CETTE DISPERSION
公开(公告)号：EP1663470A1
公开(公告)日：2006-06-07
申请号：EP04787384.9
申请日：2004-09-15
发明人： BOILOT, Jean-Pierre , BUISSETTE, Valérie , CHANE-CHING, Jean-Yves , GACOIN, Thierry , LE MERCIER, Thierry
CPC分类号： C01B25/45 , B01J13/0013 , B01J13/0039 , C01B25/37 , C09K11/02 , C09K11/7777 , C09K11/7794 , Y02B20/181
摘要： The invention relates to a colloidal dispersion comprising rhabdophane-structured rare-earth phosphate particles (Ln) and a polyphosphate. Said dispersion is prepared by a method consisting in forming a medium comprising at least one type of rare-earth salt and a poly phosphate in such quantities that the P/Ln ratio is equal to or higher than 3, in heating the thus obtained medium and in removing residual salts, thereby obtaining said dispersion. Said invention also relates to a transparent luminescent material which is obtainable from said dispersion and based on the rare-earth phosphate particles and a polyphosphate and whose P/Ln ratio is higher than 1, to a luminescent system comprising said material and to an excitation source.
摘要翻译： 本发明涉及包含横纹结构的稀土磷酸盐颗粒（Ln）和聚磷酸盐的胶态分散体。 所述分散体通过如下方法制备：在加热如此获得的介质时，以使得P / Ln比等于或大于3的量形成包含至少一种类型的稀土盐和聚磷酸盐的介质，以及 去除残留盐，从而获得所述分散体。 本发明还涉及一种透明发光材料，该材料可从所述分散体获得并基于稀土磷酸盐颗粒和多磷酸盐并且其P / Ln比率高于1，包含所述材料和激发源的发光体系 。
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13.发明授权DISPERSION COLLOIDALE D'UN COMPOSE DE CERIUM ET CONTENANT DU CERIUM III, PROCEDE DE PREPARATION ET UTILISATION 有权铈-III含铈化合物，其制备方法及其用途胶体悬浮液
公开(公告)号：EP1265815B1
公开(公告)日：2005-02-02
申请号：EP00983380.7
申请日：2000-11-17
CPC分类号： C08K3/22 , A61K8/04 , A61K8/19 , A61K8/20 , A61K8/36 , A61Q17/04 , A61Q19/00 , B01J13/0086 , B82Y30/00 , C01F17/0043 , C01P2004/64 , C01P2006/22 , C08K2003/221
摘要： The invention concerns a colloidal dispersion of a cerium compound containing cerium III. Said dispersion is characterised in that it has a cerium oxide concentration of at least 50 g/l, a proportion of cerium III relative to the total cerium of at least 0.5 %, a conductivity of more than 5 mS/cm, a pH ranging between 4 and 8 and it consists of particles having a mean diameter of more than 15 nm. It is obtained by a method which consists in: reacting at least a cerium III salt with a base in the presence of an acid in an amount such that the H+/Ce ratio is more than 1; then re-dispersing in water the precipitate derived from the preceding reaction. Said dispersions can be used in catalysis, lubrication, in ceramics, for making luminophore compounds or polymer films, in cosmetics and as anticorrosive agents.
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14.发明公开MATERIAU MESOSTRUCTURE PARTIELLEMENT CRISTALLIN CONSTITUE D OXYDE DE CERIUM, DE ZIRCONIUM OU DE TITANE ET COMPRENANT UN ELEMENT EN SOLUTION SOLIDE DANS LEDIT OXYDE 审中-公开份结晶介观结构材料在这氧化物，其包含氧化铈，氧化锆和氧化钛和元素固溶
公开(公告)号：EP1492727A2
公开(公告)日：2005-01-05
申请号：EP03745844.5
申请日：2003-04-10
IPC分类号： C01B37/00
CPC分类号： C01B37/00 , Y10T428/2982
摘要： The invention concerns a partly crystalline mesostructured material, which essentially consists on a compound selected among cerium oxide, zirconium oxide, titanium oxide or a mixture of said compounds, characterized in that it comprises at least an element M in mixed crystal in said oxide. Said material is obtained by a method which consists in: (a) contacting a starting partly crystalline mesostructured material with a solution of the element M which has a concentration of said element of not more than 2 mole/l; then (b) calcining the material obtained after contacting with said solution at a temperature not exceeding 500 °C, steps (a) and (b) being repeated, if required, until a material having the desired content of element M is obtained. The material can be used as catalyst.
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15.发明授权DISPERSION COLLOIDALE AQUEUSE D'UN COMPOSE DE CERIUM ET D'AU MOINS UN AUTRE ELEMENT CHOISI PARMI LES TERRES RARES, DES METAUX DE TRANSITION, L'ALUMINIUM, LE GALLIUM ET LE ZIRCONIUM, PROCEDE DE PREPARATION ET UTILISATION 有权胶体水性分散体的铈化合物和至少另一种元素选自稀土元素，过渡金属，铝，镓和锆，制备和使用方法的GROUP
公开(公告)号：EP1250285B1
公开(公告)日：2004-04-21
申请号：EP01907694.2
申请日：2001-01-25
CPC分类号： A61K8/04 , A61K8/19 , A61K8/26 , A61K8/27 , A61K8/28 , A61K8/29 , A61K8/36 , A61K2800/413 , A61K2800/526 , A61Q17/04 , A61Q19/00 , B01J23/10 , B01J35/0013 , B82Y5/00 , B82Y30/00 , C01B13/363 , C01F17/0043 , C01G25/00 , C01P2004/64 , C01P2006/22 , C01P2006/60 , Y10S514/937
摘要： The invention concerns an aqueous colloidal dispersion of a cerium compound and at least another element M selected among rare earths other than cerium, titanium, vanadium, chlorine, manganese, iron, cobalt, nickel, copper, zinc, aluminium, gallium and zirconium. Said dispersion is characterised in that it exhibits conductivity not more than 5mS/cm. The method for obtaining it consists in reacting with a base a mixture of at least a cerium salt and at least a salt of said element M in the presence of an acid in an amount such that the atomic ratio H+/(Ce+M) is greater than 0.1, then in redispersing in water the precipitate derived from the previous reaction. Said dispersions can be used in catalysis, for lubrication, in ceramics and as anti-corrosive agents.
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16.发明公开
公开(公告)号：EP1349648A1
公开(公告)日：2003-10-08
申请号：EP01999425.0
申请日：2001-12-07
IPC分类号： B01J13/00
CPC分类号： B01J13/0013
摘要： The invention concerns an aqueous colloidal dispersion of rare earth phosphate isotropic particles, characterised in that it comprises either a complexing medium having a pK (cologarithm of the dissociation constant of the complex formed by the complexing agent and said rare earth) higher than 2.5, or a water-soluble monovalent acid anion having a pK ranging between 2.5 and 5, or still the complexing agent and/or said monovalent acid. When the rare earth is cerium and lanthanum, the particles have an average size of not more than 20 nm. The dispersions can have a colloid agglomeration rate of less than 40 %. Said dispersion can be prepared by forming an aqueous mixture comprising at least a rare earth salt and the complexing agent or the monovalent acid anion, adding to the resulting mixture a base of phosphate ions, heating the resulting medium, thereby obtaining a precipitate which is re-dispersed in water.
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