A platform for research: civil engineering, architecture and urbanism
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METHOD OF PRODUCING COMPOSITE IRON OXIDE AND COBALT
FIELD: ceramics.SUBSTANCE: invention relates to a method of producing oxygen-conducting and magnetic ceramics based on composite oxide of iron and cobalt and can be used in making membranes for separation of oxygen, catalysts for afterburning exhaust gases, electrodes for chemical current sources, current and magnetic sensors, and logic elements. Method of producing composite iron oxide and cobalt of composition CaYBaFeCoO, where 0 ≤ x ≤ 1, 0 < y < 4 includes obtaining a solution of a mixture of nitrates of corresponding metals by dissolving the initial reagents in a stoichiometric ratio in 1-molar solution of nitric acid with the addition of an organic gel-forming agent, heating and holding solution at 200 °C until formation of a powdered product, subsequent annealing in two steps with intermediate grinding of the product and rapid cooling to room temperature. Organic gelling agent used is di-substituted ammonium citrate with ratio of nitrate groups bonded to cations of corresponding metals to disubstituted ammonium citrate of 1.8–2.0:1. Annealing is performed at a rate of heating of 10-20 °C/min to temperature of 390–410 °C and holding for 2–2.5 hours at the first stage and with a heating rate of 10–20 °C to temperature of 900–950 °C and holding for 10–12 hours at the second stage.EFFECT: method allows to considerably reduce the process time and reduce the annealing temperature.1 cl, 3 dwg, 3 ex
Изобретение относится к способу получения кислородпроводящей и магнитной керамики на основе сложного оксида железа и кобальта и может быть использовано при изготовлении мембран для сепарации кислорода, катализаторов дожигания выхлопных газов, электродов для химических источников тока, датчиков тока и магнитного поля, логических элементов. Способ получения сложного оксида железа и кобальта состава CaYBaFeCoO, где 0≤x≤1, 0
METHOD OF PRODUCING COMPOSITE IRON OXIDE AND COBALT
FIELD: ceramics.SUBSTANCE: invention relates to a method of producing oxygen-conducting and magnetic ceramics based on composite oxide of iron and cobalt and can be used in making membranes for separation of oxygen, catalysts for afterburning exhaust gases, electrodes for chemical current sources, current and magnetic sensors, and logic elements. Method of producing composite iron oxide and cobalt of composition CaYBaFeCoO, where 0 ≤ x ≤ 1, 0 < y < 4 includes obtaining a solution of a mixture of nitrates of corresponding metals by dissolving the initial reagents in a stoichiometric ratio in 1-molar solution of nitric acid with the addition of an organic gel-forming agent, heating and holding solution at 200 °C until formation of a powdered product, subsequent annealing in two steps with intermediate grinding of the product and rapid cooling to room temperature. Organic gelling agent used is di-substituted ammonium citrate with ratio of nitrate groups bonded to cations of corresponding metals to disubstituted ammonium citrate of 1.8–2.0:1. Annealing is performed at a rate of heating of 10-20 °C/min to temperature of 390–410 °C and holding for 2–2.5 hours at the first stage and with a heating rate of 10–20 °C to temperature of 900–950 °C and holding for 10–12 hours at the second stage.EFFECT: method allows to considerably reduce the process time and reduce the annealing temperature.1 cl, 3 dwg, 3 ex
Изобретение относится к способу получения кислородпроводящей и магнитной керамики на основе сложного оксида железа и кобальта и может быть использовано при изготовлении мембран для сепарации кислорода, катализаторов дожигания выхлопных газов, электродов для химических источников тока, датчиков тока и магнитного поля, логических элементов. Способ получения сложного оксида железа и кобальта состава CaYBaFeCoO, где 0≤x≤1, 0
METHOD OF PRODUCING COMPOSITE IRON OXIDE AND COBALT
Способ получения сложного оксида железа и кобальта
TURKIN DENIS IGOREVICH (author) / CHUPAKHINA TATYANA IVANOVNA (author) / BAZUEV GENNADIJ VASILEVICH (author)
2020-01-15
Patent
Electronic Resource
Russian
COMPOSITE IRON OXIDE-SINTERED BODY, COMPOSITE IRON OXIDE POWDER, AND METHOD FOR PRODUCING THEM
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