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Chemistry Of Inorganic Compounds > Rare Earth Compound (at. No. 21, 39, Or 57-71) Rare Earth Compound (at. No. 21, 39, Or 57-71)Rare Earth Compound (at. No. 21, 39, Or 57-71) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.07/19/07 - 20070166216 - Cerium salt, producing method thereof, cerium oxide and cerium based polishing slurry A cerium salt wherein, when 20 g of the cerium salt is dissolved in a mixed liquid of 12.5 g of 6N nitric acid and 12.5 g of a 30% hydrogen peroxide aqueous solution, a concentration of an insoluble component present in the solution is 5 ppm or less by ... 06/28/07 - 20070148072 - Cerium-zirconium mixed oxide and method for manufacturing the same A cerium-zirconium mixed oxide with improved heat resistance of the specific surface area at a high temperature (1000° C.) is provided along with a manufacturing method therefor. This cerium-zirconium mixed oxide comprises of spherical particles 5 to 20 nm in size and rodlike particles 5 to 20 nm in diameter ... 06/14/07 - 20070134149 - Spheroidizing agent of graphite A graphite spheroidizing agent capable of spheroidizing graphite while preventing formation of chunky graphite is provided. The graphite spheroidizing agent of the present invention comprising silicon, magnesium, calcium and rare earth elements, wherein the graphite spheroidizing agent contains rare earth elements of 0.6 to 3.0 mass % and a calcium ... 06/07/07 - 20070128097 - Ceric oxide and method for production thereof, and catalyst for exhaust gas clarification The present invention relates to ceric oxide that has excellent heat resistance and oxygen absorbing and desorbing capability useful as a co-catalyst material suitable for a catalyst for purifying exhaust gas, that is capable of maintaining a large specific surface area even in use in a high temperature environment, and ... 05/17/07 - 20070110655 - Method for making high purity and free flowing metal oxides powder According to aspects of the present invention, metal oxide powder, such as yttria and alumina powder (feed material), is processed using a plasma apparatus. The process generally consists of in-flight heating and melting of the feed material by the plasma apparatus. The plasma apparatus contains a plasma torch with required ... 04/26/07 - 20070092423 - Process for producing cerium oxide nanocrystals The present invention provides a new method for the production of cerium oxide (CeO2) nanocrystals having various sizes and various shapes via hydrolytic sol-gel reactions or non-hydrolytic sol-gel reactions. More specifically, the method synthesizing cerium oxide nanocrystals comprises; i) preparing a cerium-surfactant complex by reacting a cerium precursor and a ... 03/01/07 - 20070048205 - Cerium oxide powder and cerium oxide dispersion Cerium oxide powder having carbonate groups and made of crystalline primary particles containing cerium oxide and having carbonate groups on the surface and in a region close to the surface, and having a BET surface area of from 25 to 150 m2/g, a mean diameter of from 5 to 50 ... 02/08/07 - 20070031313 - Production method and apparatus for compound oxide powder A compound oxide powder producing method for producing compound oxide powder made of at least two kinds of metals. A solution 2, in which a first metal compound for producing, when hydrolyzed, a hydroxide or oxide is dissolved in an organic solvent, and an emulsion 1, which contains another metal ... 02/08/07 - 20070031312 - Manganite perovskite ceramics, their precursors and methods for forming Disclosed are a variety of ceramics having the formula Ln1−xMxMnO3, where 0≦x≦1 and where Ln is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu or Y; M is Ca, Sr, Ba, Cd, or Pb; manganite precursors for preparing the ceramics; a method for ... 01/25/07 - 20070020164 - Process for producing fine metal oxide particles The present invention provides a process for producing fine metal oxide particles efficiently and simply. The process for producing fine metal oxide particles of the present invention comprises subjecting a gaseous organometallic compound to combustion in a gas phase in the presence of an oxidizing substance; mixing a gaseous organometallic ... 01/11/07 - 20070009415 - Mixed metal oxides and use thereof in co2 sensors The invention relates to novel mixed metal oxides of the formula AXO3 and to mixtures of such mixed metal oxides. The particle size of the inventive substances is preferably in the nanoscale region, i.e. well into the sub-μm range. The novel compounds can be used in particular for the detection ... 11/30/06 - 20060269463 - Method for manufacturing metal oxide hollow nanoparticles and metal oxide hollow nanoparticles manufactured by the same Provided is a method for manufacturing a metal oxide hollow nanoparticles with excellent properties more easily and simply by a chemical vapor condensation employing metal β-diketonates as precursors, and a metal oxide hollow nanoparticles manufactured by the method. The method includes: preparing metal β-diketonate as a precursor; evaporating the metal ... 11/30/06 - 20060269462 - Mixed metal oxide containing sulfur The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes. ... 11/16/06 - 20060257305 - Alumina-based perovskite catalysts and catalyst supports An alumina-based perovskite is formed by mixing a lanthanide source with a transitional alumina to form a dual-phase composition comprising in situ formed LnAlO3 dispersed in alumina. The lanthanide content of the composition ranges from 6-35 wt. % to yield a high surface area composition which is useful as a ... 10/26/06 - 20060239882 - Preparation of metal chalcogenides from reactions of metal compounds and chalcogen A method of preparing metal chalcogenides from elemental metal or metal compounds has the following steps: providing at least one elemental metal or metal compound; providing at least one element from periodic table groups 13-15; providing at least one chalcogen; and combining and heating the chalcogen, the group 13-15 element ... 10/19/06 - 20060233691 - Durable catalyst for processing carbonaceous fuel, and the method of making A doped, nanocrystalline, ceria-containing, mixed metal oxide supports a noble metal to provide a thermally-durable catalyst for processing carbonaceous fuels, particularly for the water gas shift reactions. The mixed metal oxide includes Zr and/or Hf and is normally susceptible to oxide ion vacancy ordering at elevated temperature reducing conditions. A ... 08/31/06 - 20060193764 - Process for the production of metal oxide powders the volume-related mean drop diameter D30 of the aerosol is from 30 to 100 μm and the number of aerosol drops larger than 100 μm is up to 10%, based on the total number of drops, and metal oxide powder obtainable by this process. ... 08/17/06 - 20060182677 - Process for preparing fine metal oxide particles Disclosed is a process for preparing fine metal oxide particles, comprising the following steps of reacting a reactant mixture comprising i) water, ii) at least one water-soluble metal nitrate and iii) ammonia or ammonium salt at 250-700° C. under 180-550 bar for 0.01 sec to 10 min in a reaction ... 07/06/06 - 20060147363 - Hydrothermal growth of lanthanide vanadate crystals for use in laser and birefringent applications and devices The present invention is directed to lanthanide vanadate crystals having the formula LnVO4, wherein Ln is selected from La, Nd, Ce, Pr, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, and combinations of at least two thereof, made by a hydrothermal method for a wide variety ... 06/29/06 - 20060140837 - Method for preparation of nanometer cerium-based oxide particles The invention comprises novel undoped and doped nanometer-scale CeO2 particles as well as a novel semi-batch reactor method for directly synthesizing the novel particles at room temperature. The powders exhibited a surface area of approximately 170 m2/g with a particle size of about 3-5 nm, and are formed of single ... 06/22/06 - 20060133978 - Method of making crystalline inorganic particles A method of making crystalline inorganic particles having an average size of up to about 200 nm is disclosed. The crystalline inorganic particles include at least one crystalline inorganic chalcogenide and combinations thereof. Each crystalline inorganic particle includes at least one crystallite. The method includes the steps of: providing an ... 06/15/06 - 20060127294 - New method for preparing pure, thermally stable and high surface area ceria A method for the preparing pure, thermally stable and high surface area ceria is described, wherein the ceria maintains a surface area of 12 m2/g after calcination at 980° C. in air for 4 hours. In the method, an aqueous solution containing Ce3+, Mg2+, organic acid and organic polymer is ... 05/18/06 - 20060104880 - Method for preparing rare-earth halide blocks The invention relates to a method of preparing a polycrystalline block of a halide of formula AeLnfX(3f+e) in which Ln represents one or more rare earths, X represents one or more halogen atoms selected from the group consisting of Cl, Br and I, and A represents one or more alkali ... 05/11/06 - 20060099126 - Sputtering target and process for producing the same A manufacturing method of a sputtering target having mainly oxychalcogenide containing La and Cu by sintering at least one or more powders selected from an elementary substance of a constituent element, oxide or chalcogenide as the raw material, characterized in including a reaction step of retaining the [material] at a ... 04/27/06 - 20060088463 - Process for preparing zirconium-cerium-based mixed oxides A process for preparing zirconium-cerium-based mixed oxides which comprises reacting an alkali with an aqueous solution of a zirconium salt containing 0.42-0.7 mole of sulphate anion (SO42−) per mole of zirconium cation at a temperature of not greater than 50° C., in the presence of a cerium salt to form ... 03/16/06 - 20060057048 - Method for preparing nanoparticles comprising cerium oxide and zirconium This invention provides a method for preparing nanoparticles comprising cerium oxide and zirconium and having a narrow size distribution. The method comprises providing a first aqueous solution comprising zirconium oxychloride and providing a second aqueous solution comprising a first component which is either cerium nitrate or hexamethylenetetramine. The second aqueous ... 03/09/06 - 20060051278 - Metal composite oxide with novel crystal structure and their use as ionic conductors Disclosed is metal composite oxides having the new crystal structure. Also disclosed are ionic conductors including the metal composite oxides and electrochemical devices comprising the ionic conductors. The metal composite oxides have an ion channel formed for easy movement of ions due to crystallographic specificity resulting from the ordering of ... 02/23/06 - 20060039846 - Ceria composition and process for preparing same The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol ... 02/16/06 - 20060034745 - Ceria composition and process for preparing same The present invention provides a cerium oxide particulate composition and a process for preparing a cerium oxide particulate composition comprising aggregates of approximately spherical primary particles of cerium oxide. The method involves preparing a solution of a cerium oxide precursor, aerosolizing the cerium oxide precursor solution, and heating the aerosol ... 02/09/06 - 20060029536 - Lanthanum tantalate photocatalysts A substantially pure phase LaTaO4 photocatalyst is prepared by grinding precursors with mixture of at least two different sizes of high-density yttrium-stabilized zirconia balls to a very fine particle size and calcining the ground precursors. The LaTaO4 photocatalyst prepared by this method is useful in photolysis of water. ... 01/26/06 - 20060018815 - Perovskite complex oxide and catalyst A perovskite complex oxide is provided whose ratio of thermogravimetric weight decrease between 50° C. and 180° C. to thermogravimetric weight decrease between 50° C. and 1000° C. is not less than 30% and which contains, for example, one or more rare earth element species and one or more transition ... 01/19/06 - 20060013752 - Method for producing improved cerium oxide abrasive particles and compositions including such particles Provided are methods for manufacturing improved cerium oxide abrasives suitable for forming slurry compositions suitable for CMP processes. The cerium oxide abrasives are produced by the heat treatment of a mixture of a cerium precursor compound under conditions that produce primary cerium oxide particles that are incorporated in larger secondary ... 01/05/06 - 20060002837 - Processes for making rare earth metal oxycarbonates Rare earth metal compounds, particularly lanthanum, cerium, and yttrium, are formed as porous particles and are effective in binding metals, metal ions, and phosphate. A method of making the particles and a method of using the particles is disclosed. The particles may be used in the gastrointestinal tract or the ... 12/08/05 - 20050271570 - Cerium-based abrasive and production process thereof A mixed light rare earth compound which has been obtained by chemically removing medium-to-heavy rare earth elements, Nd and impurities other than rare earth elements from an ore containing rare earth elements is fired at 500 to 1100° C. to yield a mixed rare earth oxide. A cerium-based rare earth ... 11/10/05 - 20050249653 - Method for producing perovskite-type composite oxide To provide a highly safe and hygienic method for industrially efficiently producing a perovskite-type composite oxide at low temperatures in heat treatment, in which the resulting perovskite-type composite oxide can maintain the catalytic activity of a noble metal at a high level over a long time, in a method for ... 10/13/05 - 20050226799 - Rare earth phosphate and making method A rare earth phosphate represented by the formula: RPO4 wherein R is a rare earth element selected from Sc, Y, and lanthanoids of atomic numbers 57 to 71, wherein Mn substitutes for 0.01-15 atom % of R emits blue light when excited by vacuum-UV radiation. ... 10/13/05 - 20050226798 - Oxygen sorbent compositions and methods of using same and combinations thereof, especially those where the B sites are independently selected from cations of the d block transition metals Cr, Mn, Fe, Co, Ni, and Cu. One desirable set of compositions of the invention are combinations of any one or more of the compounds of generals formulas (1), (2), ... 09/15/05 - 20050201919 - Materials for cathode in solid oxide fuel cells The present invention relates to materials for cathode in solid oxide fuel cells, more particularly, an oxide having high oxygen vacancies and high conductivity as cathode, which is able to accelerate absorption of oxygen molecule and diffusion of oxygen ion for reducing internal resistance of cells, in other words, reducing ... 09/15/05 - 20050201918 - Gas diffusion electrode and catalyst for electrochemical oxygen reduction and method of dispersing the catalyst An improved gas diffusion electrode composed of a perovskite-type oxide dispersed in a mixture of carbon black and a hydrophobic binder polymer. An improved catalyst for use in the electrochemical reduction of oxygen comprising a perovskite-type compound having alpha and beta sites, and having a greater molar ratio of cations ... 09/15/05 - 20050201917 - Partially crystalline mesostructured material consisting of cerium oxide, of zirconium oxide or of titanium oxide and comprising an element in solid solution in said oxide The invention relates to a partially crystalline mesostructured material which consists essentially of a compound chosen from cerium oxide, zirconium oxide, titanium oxide or a mixture of these compounds, and which is characterized in that it comprises at least one element M in solid solution in said oxide. This material ... 07/28/05 - 20050163692 - Rare earth-oxides, rare earth -nitrides, rare earth -phosphides and ternary alloys with silicon Atomic layer epitaxy (ALE) is applied to the fabrication of new forms of rare-earth oxides, rare-earth nitrides and rare-earth phosphides. Further, ternary compounds composed of binary (rare-earth oxides, rare-earth nitrides and rare-earth phosphides) mixed with silicon and or germanium to form compound semiconductors of the formula RE-(O, N, P)-(Si,Ge) are ... 07/21/05 - 20050158224 - Process for producing a phosphate of the lanthanoids, and phosphate produced thereby Process for producing a phosphate of the lanthanoids, and phosphate produced thereby The process for producing a phosphate of the lanthanoids is based on a two-jet precipitation, starting from separate reservoirs of RE nitrate and phosphate which mix to form an initial charge. ... 07/14/05 - 20050152824 - Nanostructured re-doped sio2-base fluorescent materials and methods for production of same A new class of nanostructured RE-doped SiO2-base materials that display superior fluorescence properties is provided. In particular, high gain combined with a broad and flat spectral band width is observed in material composed of a high fraction of a nano-dispersed metastable silicate phase in a glassy SiO2 matrix, produced by ... 06/30/05 - 20050142053 - Comples mixed conductor and its preparing method It is a composite-type mixed oxygen ion and electronic conductor, in which an oxygen ion conductive phase consists of gadolinium-doped cerium oxide (GDC), an electronic conductive phase consists of spinel-type ferrite (CFO), the particle diameters of both phases are 1 μm or less, respectively, both phases are uniformly mixed mutually, ... ### FreshPatents.com Support |