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1407results about "Calcium/strontium/barium oxides/hydroxides" patented technology
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Hydrogen production from carbonaceous material
InactiveUS6790430B1Avoid the needCalcium/strontium/barium carbonatesGas turbine plantsCalcinationExothermic reaction
Owner:BOARD OF SUPERVISORS OF LOUISIANA STATE UNIV & AGRI & MECHANICAL COLLEGE +1
Nanowire catalysts
Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed.
Owner:SILURIA TECH INC
Flame made metal oxides
ActiveUS7211236B2Add featureWell mixedMaterial nanotechnologyZirconium oxidesSpray pyrolysisCarboxylic acid
Owner:EIDGENOSSISCHE TECHN HOCHSCULE ZURICH
Process for the production of ultrafine powders of metal oxides
InactiveUS6503475B1Low costHigh yield rateAlkaline earth titanatesMaterial nanotechnologyDiluentBiological activation
A process for the production of ultrafine powders that includes subjecting a mixture of precursor metal compound and a non-reactant diluent phase to mechanical milling whereby the process of mechanical activation reduces the microstructure of the mixture to the form of nano-sized grains of the metal compound uniformly dispersed in the diluent phase. The process also includes heat treating the mixture of nano-sized grains of the metal compound uniformly dispersed in the diluent phase to convert the nano-sized grains of the metal compound into a metal oxide phase. The process further includes removing the diluent phase such that the nano-sized grains of the metal oxide phase are left behind in the form of an ultrafine powder.
Owner:SAMSUNG CORNING PRECISION MATERIALS CO LTD +1
Polymer nanocomposite implants with enhanced transparency and mechanical properties for administration within humans or animals
Polymer nanocomposite implants with nanofillers and additives are described. The nanofillers described can be any composition with the preferred composition being those composing barium, bismuth, cerium, dysprosium, europium, gadolinium, hafnium, indium, lanthanum, neodymium, niobium, praseodymium, strontium, tantalum, tin, tungsten, ytterbium, yttrium, zinc, and zirconium. The additives can be of any composition with the preferred form being inorganic nanopowders comprising aluminum, calcium, gallium, iron, lithium, magnesium, silicon, sodium, strontium, titanium. Such nanocomposites are particularly useful as materials for biological use in applications such as drug delivery, biomed devices, bone or dental implants.
Owner:PPG IND OHIO INC
Separation of carbon dioxide (CO2) from gas mixtures
ActiveUS7618606B2Good repeatabilityMaterial nanotechnologyCombustible gas catalytic treatmentCo2 removalSorbent
A reaction-based process has been developed for the selective removal of carbon dioxide from a multicomponent gas mixture. The proposed process effects the separation of CO2 from a mixture of gases by its reaction with metal oxides. The Calcium based Reaction Separation for CO2 process consists of contacting a CO2 laden gas with calcium oxide in a reactor such that CaO captures the CO2 by the formation of calcium carbonate. Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent. The “regenerated” CaO is then recycled for the further capture of more CO2. This process also identifies the application of a mesoporous CaCO3 structure, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.
Owner:THE OHIO STATES UNIV
Nanotechnology for drug delivery, contrast agents and biomedical implants
A nanocomposite structure comprising a nanostructured filler or carrier intimately mixed with a matrix, and methods of making such a structure. The nanostructured filler has a domain size sufficiently small to alter an electrical, magnetic, optical, electrochemical, chemical, thermal, biomedical, or tribological property of either filler or composite by at least 20%.
Owner:PPG IND OHIO INC
Sorbent for separation of carbon dioxide (CO2) from gas mixtures
A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas / fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS-CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCO3). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS-CO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.
Owner:THE OHIO STATES UNIV
Separation of Carbon Dioxide (Co2) From Gas Mixtures By Calcium Based Reaction Separation (Cars-Co2) Process
InactiveUS20080233029A1Good repeatabilityMaterial nanotechnologyCombustible gas catalytic treatmentSorbentTransformation ratio
A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas / fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS—CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCOa). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS—CO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.
Owner:THE OHIO STATES UNIV
Inorganic dopants, inks and related nanotechnology
InactiveUS6849109B2Facilitated DiffusionLower transition temperatureSelenium/tellurium compundsCell electrodesIndiumCerium
Ink compositions with modified properties result from using a powder size below 100 nanometers. Colored inks are illustrated. Nanoscale coated, uncoated, whisker inorganic fillers are included. The pigment nanopowders taught comprise one or more elements from the group actinium, aluminum, antimony, arsenic, barium, beryllium, bismuth, cadmuim, calcium, cerium, cesium, chalcogenide, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, gold, hafnium, hydrogen, indium, iridium, iron, lanthanum, lithium, magnesium, manganese, mendelevium, mercury, molybdenum, neodymium, neptunium, nickel, niobium, nitrogen, oxygen, osmium, palladium, platinum, potassium, praseodymium, promethium, protactinium, rhenium, rubidium, scandium, silver, sodium, strontium, tantalum, terbium, thallium, thorium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium.
Owner:PPG IND OHIO INC
Polymer templated nanowire catalysts
InactiveUS20130158322A1Improve drawing legibilityMaterial nanotechnologyManganese oxides/hydroxidesNanowirePolymer science
Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are prepared by polymer templated methods and are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethane and / or ethylene. Related methods for use and manufacture of the same are also disclosed.
Owner:SILURIA TECH INC
Nanostructured powders and related nanotechnology
InactiveUS7081267B2Low costReduce operating costsNitrogen compoundsSelenium/tellurium compundsThermal energyOxygen
Methods to manufacture nanoscale particles comprising metals, alloys, intermetallics, ceramics are disclosed. The thermal energy is provided by plasma, internal energy, heat of reaction, microwave, electromagnetic, direct electric arc, pulsed electric arc and / or nuclear. The process is operated at some stage above 3000K and at high velocities. The invention can be utilized to prepare nanopowders for nanostructured products and devices such as ion conducting solid electrolytes for a wide range of applications, including sensors, oxygen pumps, fuel cells, batteries, electrosynthesis reactors and catalytic membranes.
Owner:PPG IND OHIO INC
Electrolytic production of hydrogen
InactiveUS6890419B2Oxide/hydroxide preparationOrganic-compounds/hydrides/coordination-complexes catalystsElectrochemical responseElectrolysis
Methods for producing hydrogen gas from organic substances. According to the methods, hydrogen is produced from an electrochemical reaction of an organic substance with water or a base. The instant methods permit the production of hydrogen at lower operating voltages or lower operating temperatures relative to water electrolysis. Operable organic substances include alcohols, ethers, carboxylic acids, aldehydes, and ketones. In a preferred embodiment, hydrogen gas is produced from an electrochemical reaction of methanol in the presence of a base such as NaOH or KOH.
Owner:TACTICAL FUEL CELLS
Metal oxide processing methods and systems
InactiveUS20050074380A1Move quicklyIncrease load capacityCombination devicesTemperatue controlIndustrial gasBatch processing
Methods and systems for processing metal oxides from metal containing solutions. Metal containing solutions are mixed with heated aqueous oxidizing solutions and processed in a continuous process reactor or batch processing system. Combinations of temperature, pressure, molarity, Eh value, and pH value of the mixed solution are monitored and adjusted so as to maintain solution conditions within a desired stability area during processing. This results in metal oxides having high or increased pollutant loading capacities and / or oxidation states. These metal oxides may be processed according to the invention to produce co-precipitated oxides of two or more metals, metal oxides incorporating foreign cations, metal oxides precipitated on active and inactive substrates, or combinations of any or all of these forms. Metal oxides thus produced are, amongst other uses; suitable for use as a sorbent for capturing or removing target pollutants from industrial gas streams or drinking water or aqueous streams or for personal protective respirators.
Owner:ENVIROSCRUB TECH CORP
Method of hydrothermal liquid phase sintering of ceramic materials and products derived therefrom
Provided here is a method of producing a monolithic body from a porous matrix, comprising: (i) providing a porous matrix having interstitial spaces and comprising at least a first reactant; (ii) contacting the porous matrix with an infiltrating medium that carries at least a second reactant; (iii) allowing the infiltrating medium to infiltrate at least a portion of the interstitial spaces of the porous matrix under conditions that promote a reaction between the at least first reactant and the at least second reactant to provide at least a first product; and (iv) allowing the at least first product to form and fill at least a portion of the interstitial spaces of the porous matrix, thereby producing a monolithic body, wherein the monolithic body does not comprise barium titanate.
Owner:RUTGERS THE STATE UNIV
Separation of carbon dioxide (CO2) from gas mixtures by calcium based reaction separation (CaRS-CO2) process
A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The proposed process effects the separation of CO2 from a mixture of gases (such as flue gas / fuel gas) by its reaction with metal oxides (such as calcium oxide). The Calcium based Reaction Separation for CO2 (CaRS-CO2) process consists of contacting a CO2 laden gas with calcium oxide (CaO) in a reactor such that CaO captures the CO2 by the formation of calcium carbonate (CaCO3). Once “spent”, CaCO3 is regenerated by its calcination leading to the formation of fresh CaO sorbent and the evolution of a concentrated stream of CO2. The “regenerated” CaO is then recycled for the further capture of more CO2. This carbonation-calcination cycle forms the basis of the CaRS-CO2 process. This process also identifies the application of a mesoporous CaCO3 structure, developed by a process detailed elsewhere, that attains >90% conversion over multiple carbonation and calcination cycles. Lastly, thermal regeneration (calcination) under vacuum provided a better sorbent structure that maintained reproducible reactivity levels over multiple cycles.
Owner:THE OHIO STATES UNIV
Production Of Barium Titanate Compounds
InactiveUS20070202036A1High purityLow costMaterial nanotechnologyAlkaline earth titanatesBarium titanateSpherical shaped
An ultrafine powder of barium titanate including solid solutions and doped compounds that meets up to specific characteristics is produced by method comprising two main steps. The first step is a reaction, typically in a Segmented Flow Tubular Reactor, between reactants to produce cubic-structure barium titanate composed of non-agglomerated ultrafine particles having a shape of given aspect ratio, usually a generally spherical shape, of low density corresponding at most to 90% of the intrinsic density, all particles being smaller than 1 micron and having a narrow particle size distribution and wherein the ratio of Ba:Ti including substitutents and dopants is very close to the ideal stoichiometry. This is followed by subjecting the powder produced in the first step to a second stage solvothermal post treatment typically in an autoclave at temperature less than 400° C. to convert the cubic-structure particles of low density to ultrafine tetragonal particles of increased density corresponding to at least 90% of the intrinsic density while maintaining the same aspect ratio, and maintaining the size of all particles below 1 micron, the narrow particle size distribution span, and the given ideal stoichiometry. The produced particles can have a non-spherical facetted shape such as cube-like.
Owner:JONGEN NATHALIE +1
Process of making hydrophobic metal oxide nanoparticles
InactiveUS7081234B1Uniform coatingSulfur compoundsCopper oxides/halidesMetal oxide nanoparticlesTransport layer
A process of treating metal oxide nanoparticles that includes mixing metal oxide nanoparticles, a solvent, and a surface treatment agent that is preferably a silane or siloxane is described. The treated metal oxide nanoparticles are rendered hydrophobic by the surface treatment agent being surface attached thereto, and are preferably dispersed in a hydrophobic aromatic polymer binder of a charge transport layer of a photoreceptor, whereby π—π interactions can be formed between the organic moieties on the surface of the nanoparticles and the aromatic components of the binder polymer to achieve a stable dispersion of the nanoparticles in the polymer that is substantially free of large sized agglomerations.
Owner:XEROX CORP
Flame-Retardant Magnesium Hydroxide Compositions and Associated Methods of Manufacture and Use
InactiveUS20070176155A1Improve resistance performanceSuitable for usePigmenting treatmentGlass/slag layered productsParticulatesPolymer resin
The invention provides a submicron magnesium hydroxide particulate composition comprising a first distribution of magnesium hydroxide particles having a D50 of no more than about 0.30 μm, a D90 of no more than about 1.5 μm, and a BET surface area of at least about 35 m2 / g, which can be used as a flame-retardant additive for synthetic polymers, optionally in combination with other flame-retardant additives such as nanoclays and larger-sized magnesium hydroxide particulate compositions. Polymeric resins comprising the submicron magnesium hydroxide particles and methods of manufacturing submicron magnesium hydroxide particles are also provided.
Owner:MARTIN MARIETTA MATERIALS
Methods of Making Binary Metal Oxide Nanostructures and Methods of Controlling Morphology of Same
ActiveUS20100278720A1Reduce crystallinityControl dimensionalityCopper oxides/halidesManganese oxides/hydroxidesPorous membraneNanostructure
The present invention includes a method of producing a crystalline metal oxide nanostructure. The method comprises providing a metal salt solution and providing a basic solution; placing a porous membrane between the metal salt solution and the basic solution, wherein metal cations of the metal salt solution and hydroxide ions of the basic solution react, thereby producing a crystalline metal oxide nanostructure.
Owner:WONG STANISLAUS S +1
Method for producing mixed metal oxides and metal oxide compounds
A process to produce mixed metal oxides and metal oxide compounds. The process includes evaporating a feed solution that contains at least two metal salts to form an intermediate. The evaporation is conducted at a temperature above the boiling point of the feed solution but below the temperature where there is significant crystal growth or below the calcination temperature of the intermediate. The intermediate is calcined, optionally in the presence of an oxidizing agent, to form the desired oxides. The calcined material can be milled and dispersed to yield individual particles of controllable size and narrow size distribution.
Owner:ALTAIR NANOMATERIALS INC
Method of preparing ceramic powders using chelate precursors
InactiveUS20070148065A1Oxide/hydroxide preparationStacked capacitorsBarium titanateAmmonium hydroxide
Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and the use of a nonmetal-ion-containing strong base can be used in a coprecipitation procedure for the preparation of ceramic powders. Examples of the precipitants used include tetraalkylammonium hydroxides. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.
Owner:EESTOR
Flame-retardant magnesium hydroxide compositions and associated methods of manufacture and use
InactiveUS7514489B2Improve resistance performanceSuitable for usePigmenting treatmentGlass/slag layered productsParticulatesPolymer resin
Owner:MARTIN MARIETTA MATERIALS
Titanium comprising nanoparticles and related nanotechnology
ActiveUS7232556B2Increase volumeLow cost productionNitrogen compoundsGermanium dioxideNanoparticleTitanium metal
Owner:PPG IND OHIO INC
Titanium comprising nanoparticles and related nanotechnology
ActiveUS20050191492A1Increase volumeLow cost productionNitrogen compoundsGermanium dioxideNanoparticleTitanium metal
Owner:PPG IND OHIO INC
Hydrothermal synthesis of perovskite nanotubes
ActiveUS20050036939A1Reduce the amount requiredThe instrumentation is simpleDigital storageGermanium dioxideStrontium titanateBarium titanate
A low-temperature hydrothermal reaction is provided to generate crystalline perovskite nanotubes such as barium titanate (BaTiO3) and strontium titanate (SrTiO3) that have an outer diameter from about 1 nm to about 500 nm and a length from about 10 nm to about 10 micron. The low-temperature hydrothermal reaction includes the use of a metal oxide nanotube structural template, i.e., precursor. These titanate nanotubes have been characterized by means of X-ray diffraction and transmission electron microscopy, coupled with energy dispersive X-ray analysis and selected area electron diffraction (SAED).
Owner:THE RES FOUND OF STATE UNIV OF NEW YORK
Process for the Production of Carbon Graphenes and other Nanomaterials
InactiveUS20120068124A1Low costAvoid insufficient purityMaterial nanotechnologyNon-metal conductorsMultiple layerOxidation reduction
Process for producing nanomaterials such as graphenes, graphene composites, magnesium oxide, magnesium hydroxides and other nanomaterials by high heat vaporization and rapid cooling. In some of the preferred embodiments, the high heat is produced by an oxidation-reduction reaction of carbon dioxide and magnesium as the primary reactants, although additional materials such as reaction catalysts, control agents, or composite materials can be included in the reaction, if desired. The reaction also produces nanomaterials from a variety of other input materials, and by varying the process parameters, the type and morphology of the carbon nanoproducts and other nanoproducts can be controlled. The reaction products include novel nanocrystals of MgO (percilase) and MgAl2O4 (spinels) as well as composites of these nanocrystals with multiple layers of graphene deposited on or intercalated with them.
Owner:GRAPHENE TECH
Sputtering target, oxide semiconductor film and semiconductor device
Owner:IDEMITSU KOSAN CO LTD
Process for preparing nano-sized metal oxide particles
InactiveUS20050260122A1Efficiently provideNanosized metal oxide particles more efficientlyNanostructure manufactureGold compoundsHigh concentrationAlcohol
The present invention is directed to novel sol-gel methods in which metal oxide precursor and an alcohol-based solution are mixed to form a reaction mixture that is then allowed to react to produce nanosized metal oxide particles. The methods of the present invention are more suitable for preparing nanosized metal oxide than are previously-described sol-gel methods. The present invention can provide for nanosized metal oxide particles more efficiently than the previously-described sol-gel methods by permitting higher concentrations of metal oxide precursor to be employed in the reaction mixture. The foregoing is provided by careful control of the pH conditions during synthesis and by ensuring that the pH is maintained at a value of about 7 or higher.
Owner:KANEKA CORP +1
Powdered lime composition, method of preparing same and use thereof
ActiveUS7744678B2Improve performanceImprove efficiencyGas treatmentOxide/hydroxide preparationDesorptionFlue gas
Powdered lime composition having a BET specific surface area that is equal to or greater than 25 m2 / g and a BJH total pore volume obtained from nitrogen desorption that is equal to or greater than 0.1 cm3 / g, and furthermore comprising an alkali metal. The alkali metal content is equal to or greater than 0.2% and equal to or less than 3.5% based on the total weight of the composition. There is also described a method of preparing the composition and use thereof to reduce flue gases.
Owner:LHOIST RECH & DEV SA
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