CAS: 12645-49-7; Manganese-Zinc Ferrite

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:WO-2007052778-A1
优先权日:2005-11-02
标 题:Method of promoting reaction of organic substance or inorganic substance
发明人：KONO BUHEI; KONO KAZUHITO
权利人:KONO BUHEI; KONO KAZUHITO
摘要:A method in which with respect to microwave wavelength, a wavelength shift is carried out with the use of a magnetic material, aluminum oxide, etc., and in which matching of the region of shifted wavelength to the heat absorption wavelength range of molecules of a composition, organic substance or material and irradiation thereof are carried out so as to achieve, utilizing the vibration energy of molecules, a formation, synthesis, crystallization, reaction and decomposition. High-density irradiation of an absorption wavelength matching to the heat absorption wavelength range of substance would induce vibration of molecules of the substance and transmission with the vibration energy changed to the thermal energy within the substance. Causing any thermal energy radiated from the heat absorption wavelength to be absorbed by water, nitrogen gas or argon gas and realizing radiating of wavelength only and absorption thereof by the substance would enable temperature control, further enabling a formation, synthesis, reaction and decomposition of peptide, protein or organic substance, still further enabling a nanoparticle, thin film or metal crystal of inorganic substance. Moreover, with respect to food processing heating, an increase of amino acids only by high-density irradiation of a wavelength region absorbed by amino acids has been ascertained.

专利号:US-2006097419-A1
优先权日:2004-09-27
标题 :Carbon combustion synthesis of oxides

专利号:RU-2052317-C1
优先权日:1993-06-08
标题:Method of synthesis of ferrite charge in thermic vibration grinding plant

专利号:US-7591960-B2
优先权日:2006-02-15
标题:Preparation method for oil-based magnetic fluid
发明人：CHUNG JEN-CHIEH
权利人:ATOMIC ENERGY COUNCIL
摘要:A preparation method for synthesis of oil-based magnetic fluid is disclosed. One end of a compound with a diamino group or an organic extraction reagent is connected with oil-based material while the other end is connected with surfactant having a carboxyl group that further reacts with magnetic metal oxide nanoparticles containing surfactant to form a stable useful oil-based magnetic fluid. The present invention is applied to process wastewater with oil, organic compounds or inorganic metal ions. Under the control of the magnetic field, the floating oil on the water surface is collected. The method can also be applied to the separation as well as collection of materials in the water such as organic compounds and metals.

专利号:US-6268522-B1
优先权日:1997-06-05
标 题:Catalyst, process for its production and its use for preparing vinyl acetate
发明人：HAGEMEYER ALFRED; DINGERDISSEN UWE; KUEHLEIN KLAUS; HEITZ JOHANNES; BAEUERLE DIETER
权利人:CELANESE GMBH
摘要:The invention relates to a process for producing supported shell catalysts comprising noble metals by UV photoreduction of noble metal salt precursors fixed to a support. For this purpose, the shaped supported body is impregnated with suitable noble metal salts which are then reduced to the metals in a zone close to the surface by means of UV radiation, preferably in the absence of a chemical reducing agent. The metal salts in the interior of the pellets which have not been irradiated and therefore have not been reduced are extracted using a solvent.The noble metal shell catalysts produced in this way can be used for many heterogeneously catalyzed reactions such as hydrogenations and oxidations.According to the invention, Pd/Au shell catalysts on porous ceramic supports, e.g. SiO2 shaped bodies, produced by this process can be used in the synthesis of vinyl acetate.