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Preparation method of position B element Y doped perovskite ceramic oxygen penetration film material

A perovskite-type, element-doped technology, applied in the field of inorganic oxygen-permeable membrane materials, can solve the problems of unstable material structure, low oxygen permeability, and affecting the working efficiency of materials, so as to improve the stability of oxygen permeability and oxygen permeability. The effect of high content and compact bulk structure

Inactive Publication Date: 2012-04-11
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is in order to overcome the hexagonal phase BaFeO of existing oxygen permeable membrane material 3-δ Due to the ordering of oxygen vacancies, the structure of the material is unstable and the oxygen permeability is extremely low, which affects the working efficiency of the material

Method used

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  • Preparation method of position B element Y doped perovskite ceramic oxygen penetration film material
  • Preparation method of position B element Y doped perovskite ceramic oxygen penetration film material
  • Preparation method of position B element Y doped perovskite ceramic oxygen penetration film material

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: BaFe 0.95 Y 0.05 o 3-δ Synthesis by solid phase reaction

[0019] With 19.734g of BaCO 3 (analytically pure), 0.5645g of Y 2 o 3 (analytical pure), 7.586g of Fe 2 o 3 (analytical pure) as raw material, that is, according to BaFe 0.95 Y 0.05 o 3-δ The mixture was prepared in the ratio of the elements, and alcohol was used as the medium, and ball milled in an agate ball mill tank at 200r / min for 3 hours. After mixing evenly, it was dried in an oven. After the dried material was calcined at 1000°C for 10 hours, it was ground into a powder with an agate mortar, and then ball milled with agate balls as the grinding medium at 200 r / min for 4 hours, and then put into a drying oven for drying. After the drying is complete, grind it evenly in a mortar, add 1.0wt.% PVA to mix and dry it, and then dry press it in a steel casting mold. The pressed sample strip is heated to 1320°C in a high-temperature furnace, and after 10 hours of heat preservation, it is mad...

Embodiment 2

[0020] Example 2: BaFe 0.925 Y 0.075 o 3-δ Synthesis by solid phase reaction

[0021] With 19.734g of BaCO 3 (analytically pure), 0.847g of Y 2 o 3 (analytical pure), 7.386g of Fe 2 o 3 (analytical pure) as raw material, that is, according to BaFe 0.925 Y 0.075 o 3-δ The mixture was prepared in the ratio of the elements, and alcohol was used as the medium, and ball milled in an agate ball mill tank at 200r / min for 3 hours. After mixing evenly, it was dried in an oven. After the dried material was calcined at 1000°C for 10 hours, it was ground into a powder with an agate mortar and then ball milled with an agate ball as a grinding medium at 200 r / min for 4 hours, and then put into a drying oven for drying. After the drying is complete, grind it evenly in a mortar, add 1.0wt.% PVA to mix and dry it, and then dry press it in a steel casting mold. The pressed sample strip is heated to 1340°C in a high-temperature furnace, and after 10 hours of heat preservation, it is m...

Embodiment 3

[0022] Example 3: BaFe 0.9 Y 0.1 o 3-δ Synthesis by solid phase reaction

[0023] With 19.734g of BaCO 3 (analytically pure), 1.129g of Y 2 o 3 (analytical pure), 7.1865g of Fe 2 o 3 (analytical pure) as raw material, that is, according to BaFe 0.9 Y 0.1 o 3-δ The mixture was prepared in the ratio of the elements, and alcohol was used as the medium, and ball milled in an agate ball mill tank at 200r / min for 3 hours. After mixing evenly, it was dried in an oven. After the dried material was calcined at 1000°C for 10 hours, it was ground into a powder with an agate mortar and then ball milled with agate balls as the grinding medium at 200r / min for 4 hours, and then put into a drying oven for drying. After the drying is complete, grind it evenly in a mortar, add 1.0wt.% PVA to mix and dry it, and then dry press it in a steel casting mold. The pressed sample strip is heated to 1350°C in a high-temperature furnace, and after 10 hours of heat preservation, it is made into...

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Abstract

The invention discloses a position B element Y doped perovskite ceramic oxygen penetration film material, which relates to the inorganic oxygen penetration film material. The invention is characterized in that: the perovskite BaFeO3-delta material is doped at the position B, and the molecular formula is BaFel-xYxO3-delta, wherein x is 0.05-0.25. The oxygen penetration film material prepared by the invention has good stability and high oxygen penetration quantity and is an oxygen penetration film material with excellent performance, which can be applied to the continuous oxygen supply of methane partial oxidation reaction and the industrial process of separation and purification of oxygen in other oxygen-containing gas.

Description

technical field [0001] The invention belongs to the field of inorganic oxygen-permeable membrane materials, in particular to a perovskite-type ceramic oxygen-permeable membrane material doped with B-site Y elements. technical background [0002] With the rising price of crude oil, through synthesis gas (CO and H 2 ) Fischer-Tropsch reaction to generate hydrocarbons and liquid fuels has attracted more and more attention. Among all the investments in the whole process, the investment in syngas preparation accounts for more than half of the investment. Compared with the current industrial synthesis gas preparation method, the methane partial oxidation method based on ceramic membrane materials has less capital investment, low energy consumption, relatively simple steps, and the formation of CO and H 2 More reasonable and other characteristics make it have great development prospects. One of the key components, oxygen-permeable membrane materials, has been extensively studied...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 赵海雷刘晓彤杨剑英李原
Owner UNIV OF SCI & TECH BEIJING
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