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7368093 |
Process for preparing fused solid of europium halide
Fused solid of an europium halide containing a less amount of europium oxyhalide impurities is prepared by a process in which a starting europium halide is heated to fuse in the presence of a...
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7361322 |
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...
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7347983 |
Mg2MM'o 6+x, (M=Y, rare earth metal and M'=SN, OR Zr) dielectric ceramics
Complex ceramic oxides of the general formula Mg 2 MM′O 6+x where M=Rare metal ion or Yttrium or Lanthanum and M′=Sn, Sb, Zr, Hf, Ta, and Nb; and where −0.5<x<0.5; having a defective...
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7341700 |
Method for recovery of metals from metal-containing materials using medium temperature pressure leaching
The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials using controlled, super-fine grinding and medium temperature...
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7318899 |
Method of separating isotopes
A process in which isotopes of the same element belonging to the alkaline earth metals, transition elements and heavy metals having an atomic mass of less than 209, in particular lanthanide metals,...
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7279036 |
Process for preparation of inorganic colorants from mixed rare earth compounds
The present invention provides a novel process for preparation of inorganic colourants from mixed rare earth compounds, which are directly obtained from the ore industry, without undergoing any...
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7247291 |
Nano sized sulfide compounds of cerium and a process for the preparation thereof
The present invention relates to nano sized sulfide compounds of cerium and a process for the preparation thereof. More particularly, the present invention provides novel nano sized particles of...
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7195745 |
Method of preparing a product based on phosphate of thorium and/or actinide(s)
The invention relates to a process for the preparation of a product based on a phosphate of at least one element M(IV), for example of thorium and/or of actinide(IV)(s). This process comprises the...
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7182929 |
Nanostructured multi-component and doped oxide powders and method of making same
A method for producing nanostructured multi-component or doped oxide particles and the particles produced therein. The process includes the steps of (i) dissolving salts of cations, which are...
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7147835 |
Oxide powder for dielectrics, method of manufacturing oxide powder for dielectrics, and multi-layer ceramic capacitor using the same
Disclosed herein is a small particle oxide powder for dielectrics. The oxide powder has a perovskite structure, an average particle diameter [D50(μm)] of 0.3 μm or less, a particle size...
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7141227 |
Apparatus and method for preparing cerium oxide nanoparticles
This invention provides a method for preparing cerium oxide nanoparticles with a narrow size distribution. The cerium oxide nanoparticles obtained by the method of the invention are nearly all...
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7132093 |
Mesoporous mixed oxide materials as a new class of SO2 resistant catalysts for hydrocarbon oxidation
The oxide materials are of the class of ternary mesoporous mixed oxide materials including lanthanum, a metal M selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu and Zn, and zirconium or...
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7128840 |
Ultrasound enhanced process for extracting metal species in supercritical fluids
Improved methods for the extraction or dissolution of metals, metalloids or their oxides, especially lanthanides, actinides, uranium or their oxides, into supercritical solvents containing an...
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7125536 |
Nano-structured particles with high thermal stability
This invention relates to a composition comprising nano-structured metal oxide particles (particularly, zirconia) and at least one stabilizing agent, a method to produce the composition, and a...
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7122168 |
Shape anisotropic metal oxide nanoparticles and synthetic method thereof
In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (γ-Fe 2 O 3 ) nanoparticles usable as a superhigh density magnetic recording substance by having good...
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7122163 |
Rare-earth oxide or sulfide of nano size and process for producing the same through photochemical reaction
A crystalline rare-earth oxide or sulfide which has an average particle diameter of 10 nm or less and in which the rare-earth element has a low valance, in particular, crystalline EuO or EuS of...
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7118727 |
Method of making oxide particles
The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of...
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7105138 |
Macroporous perovskite manganese oxides with highly ordered nano-pores and method of preparing the same
The present invention relates to the macroporous manganese oxide material having ferromagnetic property and a method of preparing the same, more particularly to the macroporous ferromagnetic...
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7101484 |
Sr-90/Y-90 radionuclide generator for production of high-quality Y-90 solution
A process for purifying a stock Sr-90 solution containing stable and radioactive impurities, holding the purified Sr-90 solution for Y-90 ingrowth, and subsequently extracting the Y-90 from the...
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7094383 |
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 m 2 /g after calcination at 980° C. in air for 4 hours....
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7090724 |
Langasite single crystal ingot, substrate for piezoelectric device and method for manufacture thereof, and surface acoustic wave device
The contents by weight ratio of lanthanum oxide, gallium oxide, and silicon oxide, which are components, in the longitudinal cross-section and transverse cross-section of the straight part,...
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7063792 |
Method for separating metals such as zirconium and hafnium
A method for separating a metal (a) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state...
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7049347 |
Method for making fine and ultrafine spherical particles of zirconium titanate and other mixed metal oxide systems
Disclosed is a method for making amorphous spherical particles of zirconium titanate and crystalline spherical particles of zirconium titanate comprising the steps of mixing an aqueous solution of...
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7025943 |
Method for preparation of nanometer cerium-based oxide particles
The invention comprises novel undoped and doped nanometer-scale CeO 2 particles as well as a novel semi-batch reactor method for directly synthesizing the novel particles at room temperature. The...
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6835228 |
Process of recovering valuable metals from waste secondary batteries
A process of recovering metals from waste lithium ion/Ni—H/Ni—Cd batteries, wherein the waste batteries are calcined and sieved to generate an ash containing metals and metal oxides. The...
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6811758 |
Precipitation process
The present invention relates to a process for inducing homogeneous precipitation of a metal oxide, wherein said metal is capable of existing in at least two cationic oxidation states, which...
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6806295 |
Sol-gel processing with inorganic metal salt precursors
Methods for sol-gel processing that generally involve mixing together an inorganic metal salt, water, and a water miscible alcohol or other organic solvent, at room temperature with a...
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6783855 |
Rare-earth-activated phosphors
A process for preparing phosphor particles of a host oxide doped with a rare earth or manganese which comprises: preparing an aqueous solution of salts of the host ion and of the dopant ion and a...
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6699617 |
Alkaline storage battery, hydrogen-absorbing alloy electrode and method for producing the same
The present invention provides an alkaline storage battery excellent in high-rate charge and discharge characteristics, and a hydrogen-absorbing alloy electrode suitable for the battery and a...
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6673143 |
Aqueous slurry of rare earth hydroxide particles
An aqueous slurry of rare earth hydroxide particles which is particularly suitable for use as a sintering aid of a ceramic powder such as silicon nitride. The aqueous slurry, which is characterized...
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6667019 |
Rare earth oxide fluoride nanoparticles and hydrothermal method for forming nanoparticles
A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also...
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6656588 |
Ultrafine powders and their use as lasing media
Doped, nanosize metal oxide particles have been shown to exhibit stimulated emission and continuous-wave laser action when energized appropriately, for example by electron beams. The doped...
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6610152 |
Method for removing inorganic matter from solid surfaces
Metal ions are removed from solid surfaces which may be contaminated with one or more radionuclides by contacting the solid surfaces with the supercritical fluid, as, for instance, carbon dioxide...
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6582814 |
Rare earth-transition metal oxide pigments
Rare earth-transition metal oxides are used as pigments. The rare earth-transition metal oxide pigments are preferably of the formula (Re x Tm)O y , where Re is at least one rare earth element, Tm...
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6504077 |
Method for the decontamination of metallic surfaces
A method of decontaminating a radioactively contaminated oxide on a surface. The radioactively contaminated oxide is contacted with a diphosphonic acid solution for a time sufficient to dissolve...
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6478982 |
Ferrite magnet powder and magnet using the magnet powder, and method for preparing them
The ferrite magnet powder of the present invention is magnet powder having, as the major phase, a La—Co magnetoplumbite ferrite where La and Co are substituted for Sr and Fe, respectively,...
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6468495 |
Treatment of molten salt reprocessing wastes
A method of removing from a metal salt ionic species contained therein involves contacting the metal salt with an ionic liquid to dissolve the metal salt, the ionic species or both. At least in the...
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6461581 |
Clathrate compounds and manufacturing method thereof
The present invention provides a clathrate compound which can be used as a thermoelectric material, a hard material, or a semiconductor material. Silicon or carbon are formed into a clathrate...
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6461576 |
Pyroprocess for processing spent nuclear fuel
This is a pyroprocess for processing spent nuclear fuel. The spent nuclear fuel is chopped into pieces and placed in a basket which is lowered in to a liquid salt solution. The salt is rich in ZrF...
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6455018 |
Recovery of precious metal and other values from spent compositions/materials
Precious metal values, e.g., platinum, palladium and rhodium, and, optionally, other valuable elements, e.g., one or more rare earths and cerium in particular, are recovered from a wide variety of...
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6436358 |
Metals removal from spent salts
A method and apparatus for removing metal contaminants from the spent salt of a molten salt oxidation (MSO) reactor is described. Spent salt is removed from the reactor and analyzed to determine...
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6365007 |
Photocatalysts for the degradation of organic pollutants
A photocatalyst is provided consisting of TiO 2 doped with at least one lanthanide metal oxide. The photocatalyst may be prepared by forming a titanium-containing gel and then drying the gel and...
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6319429 |
Oxygen sensitive resistance material
Oxygen sensitive resistance materials for use with oxygen sensors, in particular λ probes are described. These materials are based on the fact that with complex metal oxides it is possible--by...
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6245305 |
Method of separating and purifying gadolinium-153
The present invention is an improvement to the method of separating and purifying gadolinium from a mixture of gadolinium and europium having the steps of (a) dissolving the mixture in an acid; (b)...
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6238566 |
Multi-stage solvent extraction of metal value
Proposed is an improvement in a multi-stage solvent extraction process of a metal value such as rare earth elements from an acidic feed solution containing the metal value in the form of a...
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6221473 |
Rare-earth and alkali sulphide, method for preparing same and use thereof as a pigment
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6214301 |
Hafnium radioisotope recovery from irradiated tantalum
Hafnium is recovered from irradiated tantalum by: (a) contacting the irradiated tantalum with at least one acid to obtain a solution of dissolved tantalum; (b) combining an aqueous solution of a...
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6200377 |
Process for beneficiation of mixtures of mineral particles
An improved process for the beneficiation of mixtures of mineral particles (such as kaolin clays) containing minerals which chelate with hydroxamates. The use of a silicon-containing compound in...
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6110433 |
Process for the recovery of metals from used nickel/metal/rare earth hydride storage batteries
The invention relates to a process for recovering metals from used nickel/hydride storage batteries, in which storage battery scrap has been mechanically comminuted and divided into at least a...
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5981445 |
Process of making fine ceramic powders from aqueous suspensions
The new preparation process for making fine high specific surface ceramic powders suitable as catalysts or precursors for ceramics uses lanthanum (or other rare earth lanthanide) oxide as one of...
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