CAS: 1309-37-1; Iron(Iii) Oxide

专利信息

专利号:US-7897135-B2
优先权日:2004-09-27
标 题 :Carbon combustion synthesis of oxides
发明人：MARTIROSYAN KAREN S; LUSS DAN
权利人:UNIV HOUSTON
摘要:The present invention is generally directed to a novel, economic synthesis of oxide ceramic composites. Methods of the present invention, referred to as carbon combustion synthesis of oxides (CCSO), are a modification of self-propagating high-temperature synthesis (SHS) methods in which the heat needed for the synthesis is generated by combustion of carbon in oxygen rather than that of a pure metal. This enables a more economic production of the ceramic material and minimizes the presence of intermediate metal oxides in the product. The reactant mixture generally comprises at least one oxide precursor (e.g., a metal or non metal oxide, or super oxide, or nitride, or carbonate, or chloride, or oxalate, or halides) as a reactant, but no pure metal. Pure carbon in the form of graphite or soot is added to the reactant mixture to generate the desired heat (upon ignition). The mixture is placed in a reactor and exposed to gaseous oxygen. The high-temperature exothermic reaction between the carbon and oxygen generates a self-sustaining reaction in the form of a propagating temperature wave that causes a reaction among the reactants. The reaction proceeds rapidly following ignition, and the final product comprises simple and/or complex oxides of elements present in the oxide precursor(s). CCSO also enables synthesis of oxides that cannot be produced by conventional SHS, such as when the pure metal is pyrophoric (such as Li or La) or such as when it melts at room temperature (e.g., Ga) or such as the combustion heat of the metal is relatively low.

专利号:US-2016008797-A1
优先权日:2014-06-04
标 题:Method for the synthesis of porous inorganic material, catalytic cracking of petroleum hydrocarbons and preparation of catalyst thereof
发明人：CHEN LETIAN; CHEN JIANZHONG
权利人:ZHANJIANG GIANT SUCCESS INVEST CO LTD
摘要:A method for synthesis of porous inorganic materials, preparation of a catalyst and catalytic cracking of petroleum hydrocarbons thereof includes processes for synthesis of porous inorganic materials and preparation of the catalytic cracking catalyst and catalytic cracking of petroleum hydrocarbons. The synthesis process is advantaged in low cost in raw materials; the porous inorganic material has various pore structures; and transitional metal used overcomes the defects of the catalytic properties. The porous inorganic material serving as the main active ingredient and containing crystalline aluminum silicate zeolite structures provides surface acidity required by the catalytic reaction. The surface acidity is flexibly adjusted. The hierarchical pore profile improves the accessibility of the active center of the zeolite structure and favors the reaction efficiency and benefits of the petroleum hydrocarbon cracking, and reduces the negative effects caused by diffusion limit. The catalyst containing the porous inorganic material has low manufacturing cost and better properties.

专利号:US-2023159337-A1
优先权日:2021-11-19
标题:Synthesis of uniform diamond nanoparticles
发明人：YAN HAO; LYU TENGTENG
权利人:UNIV NORTH TEXAS
摘要:The synthesis of sub-five-nanometer nanodiamonds with high uniformity and purity. Inspired by the formation of natural diamond, iron carbide nanoparticles embedded in iron oxide matrices as the carbon source were used. High-pressure-high-temperature treatment of the precursor yields nanodiamonds with tunable diameters down to 2.13 nm and 0.22-nm standard deviation. The disclosed synthesis procedures also include a method for forming fluorescent nanodiamonds.

专利号:US-4279781-A
优先权日:1979-10-09
标 题:Catalyst for the synthesis of methanol
发明人：DIENES EDWARD K; COLEMAN RAY L; HAUSBERGER ARTHUR L
权利人:UNITED CATALYSTS INC
摘要:A methanol synthesis catalyst which comprises a major portion by weight of the oxides of copper and zinc and a minor portion by weight of a thermal stabilizing metal oxide is useful for the synthesis of methanol from the oxides of carbon and hydrogen at relatively low temperatures. The catalyst is characterized in that the ratio of copper oxide to zinc oxide, each expressed as a metal by weight, is in the range of from 2:1 to 3.5:1 and by the intimate association with each other of copper and zinc oxides and with said thermal stabilizing oxide. Further, the catalyst is characterized in that the amount of iron oxides, as an impurity, is less than 150 parts per million.

专利号:WO-2012001578-A1
优先权日:2010-06-29
标 题 :Single-step synthesis of iron oxide nanoparticles
发明人：BURDINSKI DIRK; HAEX NICOLE PETRONELLA MARTIEN
权利人:KONINKL PHILIPS ELECTRONICS NV; BURDINSKI DIRK; HAEX NICOLE PETRONELLA MARTIEN
摘要:The invention provides methods for the synthesis of iron oxide nanoparticles and the particles obtainable by these methods. The particles can be used as tracer materials for magnetic particle imaging and for Magnetic Particle Spectroscopy (MPS). The method for the synthesis of these particles comprises the steps: (i) dissolving at least one water-soluble iron salt and at least one water-soluble stabilizer in water to form a reaction batch, (ii) adding at least one base to the reaction batch to yield a pH of 10 to 13, and (iii) exposing the reaction batch to a reaction temperature T R for a defined period of time DT, wherein T R ≥ 110°C, to obtain the iron oxide nanoparticles.

专利号:US-7601318-B2
优先权日:2000-09-26
标 题:Method for synthesis of carbon-coated redox materials with controlled size
发明人：ARMAND MICHEL; GAUTHIER MICHEL; MAGNAN JEAN-FRANCOIS; RAVET NATHALIE
权利人:HYDRO QUEBEC; CENTRE NAT RECH SCIENT; UNIV MONTREAL
摘要:A method for the synthesis of compounds of the formula C—Li x M 1−y M′ y (XO 4 ) n , where C represents carbon cross-linked with the compound Li x M 1−y M′ y (XO 4 ) n , in which x, y and n are numbers such as 0≦x≦2, 0≦y≦0.6, and 1≦n≦1.5, M is a transition metal or a mixture of transition metals from the first period of the periodic table, M′ is an element with fixed valency selected among Mg 2+ , Ca 2+ , Al 3+ , Zn 2+ or a combination of these same elements and X is chosen among S, P and Si, by bringing into equilibrium, in the required proportions, the mixture of precursors, with a gaseous atmosphere, the synthesis taking place by reaction and bringing into equilibrium, in the required proportions, the mixture of the precursors, the procedure comprising at least one pyrolysis step of the carbon source compound in such a way as to obtain a compound in which the electronic conductivity measured on a sample of powder compressed at a pressure of 3750 Kg·cm −2 is greater than 10 −8 S·cm −1 . The materials obtained have excellent electrical conductivity, as well a very improved chemical activity.