121 results about "Manganese(III) oxide" patented technology

The invention provides a high temperature resistance infrared radiation pottery dope, which belongs to the thermal engineering field. The dope is a mixture of the following materials in mass share: 200 mesh zirconium dioxide 10, 200 mesh zircon quartz sand 20, 300 mesh feldspar 10, 300 mesh cerium oxide 7, 300 mesh manganese sesquioxide 15, 300 mesh manganic oxide 3, 600 mesh titanium dioxide 2, 200 mesh alumina 10, 400 mesh graphite 10, 400 mesh boron nitride 3 and 200 mesh carborundum 10. The graphite and boron nitride in the dope are of lubricating and anti-bonding functions, the carborundum is of wear resistance function, the manganic oxide, titanium dioxide and alumina are of strong infrared ray emission and the dope mad of zirconium dioxide, zircon quartz, feldspar and cerium oxide has good compact structure and strong fire-proof and the manganese sesquioxide can catalyze C, S and N for conversion. Therefore, the invention is applicable for use in dynamic furnaces such as coal dust furnace, boiling furnace and fluidized bed furnace.

The invention provides a lithium ion battery cathode material. The chemical formula of the lithium ion battery cathode material is LiMnxAl1-xO2, wherein x is not less than 0.7 but is less than 1. The preparation method for the lithium ion battery cathode material comprises the following steps of: dissolving manganic oxide into lithium hydroxide aqueous solution to obtain mixed solution; adding aluminum oxide into the mixed solution to obtain a mixture, wherein the molar ratio of lithium to manganese is (10:1)-(20:1); performing a hydro-thermal reaction on the mixture at the temperature of 110-200 DEG C to generate the LiMnxAl1-xO2, wherein x is not less than 0.7 but is less than 1. According to the preparation method for the lithium ion battery cathode material, Al<3+> is introduced into layered LiMnO2 so as to restrain the Jahn-Teller effect of Mn<3+> and stabilize the structure of the layered LiMnO2; relative to the layered LiMnO2, the area impedance rate of the material can be effectively lowered by the LiMnxAl1-xO2, and meanwhile, the plug-in potential and the energy density of Li<+> can also be increased, and thereby, the electrochemical performance of the material is optimized to a certain degree. The preparation method is simple and convenient in operation and is low in cost and can be used for mass production.

The invention relates to a controllable regulation and control method of a Na2 / 3Mn1 / 2Fe1 / 4Co1 / 4O2 positive electrode material of a sodium-ion battery meeting high-rate discharge cycle performance. Themethod comprises the steps of taking sodium carbonate (with a molecular formula of Na2CO3), manganese sesquioxide (with a molecular formula of Mn2O3), ferric oxide (with a molecular formula of Fe2O3)and cobalt carbonate (with a molecular formula of CoCO3) as raw materials, weighing according to a stoichiometric ratio, and fully mixing to prepare a precursor compact sheet; synthesizing the Na2 / 3Mn1 / 2Fe1 / 4Co1 / 4O2 positive electrode material of the sodium ion battery by adopting a microwave sintering technology. The technical route has the characteristics of simple process, high reaction speed,controllable product morphology, low cost and the like, and is suitable for rapid controllable preparation of sodium ion battery positive electrode materials and related materials; the synthesized pure-phase Na2 / 3Mn1 / 2Fe1 / 4Co1 / 4O2 material has high specific capacity, good cycling stability and high rate capability, and provides a valuable basis for improving the comprehensive electrochemical performance of the sodium ion battery.

A process for preparing metallic compound from the used dry Zn-Mn batteries includes such steps as electrolyzing, filtering and crystallizing to obtain zinc chloride, Mn2O3, lead sulfate and cadmium sulfate. Its advantage is no pollution in its process.

The invention belongs to a hydrometallurgy field, which discloses a method for separating calcium and magnesium from manganese oxide. Crude (or elementary) manganic manganous oxide or manganese sesquioxide prepared by oxygen or air sulfur oxide acid manganese liquor or manganese hydroxide have high calcium and magnesium impurity of which contents are higher than national or industry standards. In the manganese oxide, the calcium and magnesium can exist in the forms such as sulfate and hydroxide. The method utilizes processes such as partial disliquor, morphological change of the oxide and rearrangement of crystal structure component, etc. of the manganese oxide in acid medium to cause the calcium and magnesium composition mixed with the manganese oxide to be exposed and dissolved to achieve the aim of separating the calcium and magnesium. Manganese mixed oxide is obtained after calcium and magnesium separated slurry is filtered, washed and parched; the manganic manganous oxide is obtained by thermally treating the mixture. The method for separating the calcium and magnesium from the manganese oxide has the advantages of easy control of reaction condition, good effect of removing the calcium and magnesium and low cost.

The invention discloses a high-temperature phosphorus-bearing cerium-manganese-tin composite denitrification catalyst, made by combining cerous phosphate, manganese(III) oxide and tin oxide in a molarratio of 1:0.15:(0.02-0.06); nitrogen oxide conversion rate of the catalyst at the suitable temperature of 300-500 DEG C is not lower than 85%. The invention also discloses a preparation method of the high-temperature phosphorus-bearing cerium-manganese-tin composite denitrification catalyst, comprising: preparing cerous phosphate, and supporting manganese(III) oxide and tin oxide onto the cerousphosphate. The high-temperature phosphorus-bearing cerium-manganese-tin composite denitrification catalyst uses rare-earth elements, cerium, tin and manganese, as active ingredients having low cost;the preparation method is simple; the high-temperature phosphorus-bearing cerium-manganese-tin composite denitrification catalyst has no volatile vanadium. The high-temperature phosphorus-bearing cerium-manganese-tin composite denitrification catalyst has high removal rate of nitrogen oxides at the high temperature zone of 300-500 DEG C and also has good water resistance.