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Ceramic oxygen permeation membrane with double protective layers as well as preparation method and application of ceramic oxygen permeation membrane
The invention discloses a ceramic oxygen permeation membrane with double protective layers and a preparation method and application thereof, and belongs to the field of mixed conductor oxygen permeation membranes. The method comprises the following steps: preparing biphase metal oxide initial powder by taking fluorite type oxide and perovskite type oxide as raw materials, and pressing the biphase metal oxide initial powder into a green body; placing the green body on an Al2O3 corundum sheet, and carrying out one or two times of high-temperature sintering to obtain a ceramic oxygen permeation membrane with a three-layer structure; during high-temperature sintering, at least one side of the surface of the green body is in contact with Al2O3; the three-layer structure comprises a single-phase compact protection layer on one side, a mixed conductive oxygen permeation layer in the middle and a single-phase compact protection layer on the other side. The fluorite structure protection layers on the two sides of the oxygen permeation membrane are thin, compact, mixed in electric conduction, resistant to reduction and CO2 corrosion and matched with the middle layer in a thermochemical mode, so that the oxygen permeation membrane has stability and oxygen permeation performance. The method has the advantages of simple process, low cost and easiness in large-scale preparation, and is expected to be widely applied to the fields of ceramic membrane reactors, solid oxide fuel cells, high-temperature electrolytic cells and the like.
本发明公开了一种具有双保护层的陶瓷透氧膜及其制备方法与应用，属于混合导体透氧膜领域。该方法以萤石型氧化物和钙钛矿型氧化物为原料制备双相金属氧化物初始粉末，并将其压制成坯体；将坯体放置在Al2O3刚玉片上，经一次或两次高温烧结获得具有三层结构的陶瓷透氧膜；高温烧结时，至少一侧坯体表面与Al2O3接触；所述三层结构包括一侧单相致密保护层、中间混合导电透氧层、另一侧单相致密保护层。本该透氧膜两侧的萤石结构保护层，薄、致密、混合导电、抗还原和CO2腐蚀、与中间层热化学匹配，使透氧膜兼具稳定性和透氧性能。工艺简易、成本低、易于放大制备，有望被广泛用于陶瓷膜反应器、固体氧化物燃料电池、高温电解电池等领域。
Ceramic oxygen permeation membrane with double protective layers as well as preparation method and application of ceramic oxygen permeation membrane
The invention discloses a ceramic oxygen permeation membrane with double protective layers and a preparation method and application thereof, and belongs to the field of mixed conductor oxygen permeation membranes. The method comprises the following steps: preparing biphase metal oxide initial powder by taking fluorite type oxide and perovskite type oxide as raw materials, and pressing the biphase metal oxide initial powder into a green body; placing the green body on an Al2O3 corundum sheet, and carrying out one or two times of high-temperature sintering to obtain a ceramic oxygen permeation membrane with a three-layer structure; during high-temperature sintering, at least one side of the surface of the green body is in contact with Al2O3; the three-layer structure comprises a single-phase compact protection layer on one side, a mixed conductive oxygen permeation layer in the middle and a single-phase compact protection layer on the other side. The fluorite structure protection layers on the two sides of the oxygen permeation membrane are thin, compact, mixed in electric conduction, resistant to reduction and CO2 corrosion and matched with the middle layer in a thermochemical mode, so that the oxygen permeation membrane has stability and oxygen permeation performance. The method has the advantages of simple process, low cost and easiness in large-scale preparation, and is expected to be widely applied to the fields of ceramic membrane reactors, solid oxide fuel cells, high-temperature electrolytic cells and the like.
本发明公开了一种具有双保护层的陶瓷透氧膜及其制备方法与应用，属于混合导体透氧膜领域。该方法以萤石型氧化物和钙钛矿型氧化物为原料制备双相金属氧化物初始粉末，并将其压制成坯体；将坯体放置在Al2O3刚玉片上，经一次或两次高温烧结获得具有三层结构的陶瓷透氧膜；高温烧结时，至少一侧坯体表面与Al2O3接触；所述三层结构包括一侧单相致密保护层、中间混合导电透氧层、另一侧单相致密保护层。本该透氧膜两侧的萤石结构保护层，薄、致密、混合导电、抗还原和CO2腐蚀、与中间层热化学匹配，使透氧膜兼具稳定性和透氧性能。工艺简易、成本低、易于放大制备，有望被广泛用于陶瓷膜反应器、固体氧化物燃料电池、高温电解电池等领域。
Ceramic oxygen permeation membrane with double protective layers as well as preparation method and application of ceramic oxygen permeation membrane
一种具有双保护层的陶瓷透氧膜及其制备方法与应用
JIANG HEQING (author) / HE GUANGHU (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B01D
SEPARATION
,
Trennen
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
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