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1.发明授权
公开(公告)号：EP1246777B1
公开(公告)日：2006-03-15
申请号：EP00988862.9
申请日：2000-11-21
CPC分类号： B82Y30/00 , C01B13/363 , C01F17/0043 , C01P2004/64
摘要： The invention concerns an aqueous colloidal dispersion based on at least a lanthanide compound and a complex-forming agent having a pK (cologarithm of the dissociation constant of the complex formed by the complex-forming agent and the lanthanide cation) higher than 2.5. Said dispersion can further comprise a compound of at least an element selected among the groups IVa, Va, VIa, VIIa, VIII, Ib, and IIb of the periodic table. The method for preparing the dispersion consists in starting with an aqueous mixture comprising at least a lanthanide salt, optionally a salt of one said element, and the complex-forming agent; adding a base to the resulting mixture and heating the mixture, whereby the dispersion is obtained. The dispersion can be used on a substrate as anticorrosive agent, in a cosmetic composition, in catalysis, for preparing polymer films, in lubricants or in ceramics.
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2.发明公开MATERIAUX MESOSTRUCTURES INTEGRANT DES PARTICULES CRISTALLINES NANOMETRIQUES COMPRENANT UN METAL EN SOLUTION SOLIDE AU SEIN DE LEUR RESEAU CRISTALLIN 审中-公开WITH在纳米范围内含有固溶体的金属晶格中的CORE STORED结晶粒子，介观结构材料
公开(公告)号：EP1470075A2
公开(公告)日：2004-10-27
申请号：EP03715023.2
申请日：2003-01-20
IPC分类号： C01B3/00
CPC分类号： C01B37/005 , C01B33/38 , C01B37/00 , C01B37/02 , Y10T428/2982
摘要： The invention relates to a mesostructural material, preferably thermally stable, comprising a mineral phase within which nano-scale particles of a metallic oxide are dispersed, selected from a cerium, zirconium, titanium or rare earth metal oxide other than that of cerium. Said oxide comprises at least one metallic element M in a cationic form in a solid solution within the crystalline structure of said oxide. The invention further relates to a method for production of such a material, particularly in the form of heterogeneous catalysts or as a support for catalytic species.
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公开(公告)号：EP1638679A2
公开(公告)日：2006-03-29
申请号：EP04742768.7
申请日：2004-05-18
IPC分类号： B01J13/00
CPC分类号： B01J35/0013 , B01J13/0008 , B01J23/002 , B01J23/34 , B01J23/83 , B01J2523/00 , B82Y30/00 , C01F17/0025 , C01G3/006 , C01G37/00 , C01G45/1264 , C01G49/0054 , C01G51/68 , C01G51/70 , C01G53/68 , C01G55/002 , C01P2002/34 , C01P2002/52 , C01P2002/54 , C01P2002/72 , C01P2004/62 , C01P2004/64 , B01J2523/3706 , B01J2523/842 , B01J2523/24 , B01J2523/72 , B01J2523/845
摘要： The invention relates to a colloidal dispersion of a rare earth perovskite structured compound of formula LnBO3 (1) wherein Ln is at least one rare earth other than une cerium alone and B is at least one element selected from the group including elements whose atomic number is 22 -31, 40 - 51, 73 - 83 and aluminium. The dispersion is obtained by reacting a perovskite of formula (1), exhibiting elementary crystallites of a maximum of 500 nm with a monovalent acid having a pka ranging between 2.5 and 5.0; heating the mixture obtained at a temperature of 50 °C and 200 °C; and purification, if necessary, of the reactional medium thus obtained. The dispersion according to the invention can be used in the production of catalysts.
摘要翻译： 本发明涉及式LnBO3（1）的稀土钙钛矿结构化合物的胶态分散体，其中Ln是至少一种单独的除铈以外的稀土元素，B是至少一种选自原子序数为 22 - 31，40 - 51，73 - 83和铝。 该分散体通过使具有最大值为500nm的基本微晶的式（1）的钙钛矿与具有2.5-5.0的pka范围的一价酸反应而获得; 加热在50℃和200℃的温度下获得的混合物; 并且如果需要，纯化由此获得的反应介质。 根据本发明的分散体可以用于制备催化剂。
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公开(公告)号：EP1663470B1
公开(公告)日：2011-01-05
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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5.发明公开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：EP1427673A1
公开(公告)日：2004-06-16
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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公开(公告)号：EP1345681A1
公开(公告)日：2003-09-24
申请号：EP01999426.8
申请日：2001-12-07
IPC分类号： B01J13/00
CPC分类号： B01J13/0013 , B01J13/0039 , Y10S977/773
摘要： 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.
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公开(公告)号：EP1345681B1
公开(公告)日：2011-03-30
申请号：EP01999426.8
申请日：2001-12-07
IPC分类号： B01J13/00
CPC分类号： B01J13/0013 , B01J13/0039 , Y10S977/773
摘要： 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.
摘要翻译： 本发明涉及一种稀土胶体分散体及其制备方法。 该分散体的特征在于它包含至少一种稀土和pKa至少为2.5的水溶性单价酸阴离子的各向异性和解聚颗粒或能够解聚的颗粒。 它通过包括以下步骤的方法制备：将至少一种稀土盐溶液与控制反应介质pH值的磷酸根离子混合，浓度范围为4-9，并且在水溶性单价酸存在下 至少2.5的pH值; 任选地使所得混合物成熟; 从反应介质中分离沉淀物：将所述沉淀物重新分散在水中。
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8.发明公开DISPERSION COLLOIDALE ORGANIQUE DE PARTICULES DE FER, SON PROCEDE DE PREPARATION ET SON UTILISATION COMME ADJUVANT DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE 有权胶体有机分散，铁粒的生产过程及其用作燃料添加剂在VERBRENNUGSMOTOREN
公开(公告)号：EP1458471A1
公开(公告)日：2004-09-22
申请号：EP02799830.1
申请日：2002-12-19
IPC分类号： B01J13/00
CPC分类号： F02M25/00 , B01J13/0004 , C01P2004/64 , C09C1/22 , C09C1/24 , C10L1/10 , C10L1/1233 , C10L1/14 , C10L1/1608 , C10L1/1616 , C10L1/1852 , C10L1/1857 , C10L1/1881 , C10L1/1883 , C10L1/1985 , C10L1/202 , C10L1/2222 , C10L1/2437 , C10L1/2608 , C10L1/2641 , C10L1/2683 , C10L1/301 , C10L10/06 , Y10S516/922
摘要： The invention concerns a colloidal dispersion characterized in that it comprises an organic phase; particles of an iron compound in amorphous form and at least an amphiphilic agent. Said dispersion is prepared by a method which consists in reacting with a base either an iron salt in the presence of a complexing agent or an iron complex, while maintaining the pH of the reaction medium at a value of more than 8 whereby a precipitate is obtained, the iron complexing agent being selected among water-soluble carboxylic acids having a complexing constant K such that the pK is at least 3 and the iron complex being selected among reaction products of iron salts with said acids; then contacting the resulting precipitate or a suspension containing said precipitate with an organic phase in the presence of an amphiphilic agent whereby is obtained the dispersion in organic phase. The inventive dispersion can be used as combustion additive in fuels or liquid fuels.
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9.发明授权
公开(公告)号：EP1210172B1
公开(公告)日：2004-03-17
申请号：EP00958600.9
申请日：2000-07-24
CPC分类号： B82Y30/00 , B01J13/003 , B01J13/0043 , B01J13/0047 , C01F17/0043 , C01G23/003 , C01G25/00 , C01P2002/01 , C01P2004/64 , C02F1/66 , C10L1/10 , C10L10/06
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10.发明授权
公开(公告)号：EP1349648B1
公开(公告)日：2011-03-23
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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