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Copper-based double-phase mixed conductor oxygen permeation membrane material with high oxygen permeation amount and preparation method thereof
The invention provides a copper-based double-phase mixed conductor oxygen permeation membrane material with high oxygen permeation amount, and belongs to the technical field of inorganic functional ceramic manufacturing. The general formula of the copper-based double-phase mixed conductor oxygen permeation membrane material is Ce < 0.85 > Pr < 0.1 > Cu < 0.05 > O < 2-delta >-Pr < x > Sr < 1-x > Fe < 1-y > Cu < y > O < 3-delta > (CPCO-P < x > S < 1-x > F < 1-y > CyO, x is equal to 0.6 or 0.4, and y is equal to 0.05 or 0.1 or 0.2); the preparation method comprises the following steps: firstly, preparing required powder by a one-pot sol-gel method, calcining the powder in a muffle furnace at 950 DEG C for 12 hours to obtain a precursor, and then tabletting and sintering the powder to obtain the required mixed conductor oxygen permeation membrane. The mixed conductor oxygen permeation membrane material with high oxygen permeation amount is obtained by regulating and controlling the Pr element with multivalent states and the proportion of the + 2 valence Cu element capable of effectively reducing the sintering temperature. The prepared membrane material has excellent oxygen flux under purging of helium/carbon dioxide and other gases, and shows good stability in low-oxygen argon and corrosive carbon dioxide atmospheres. The material can be used as a novel oxygen source to be applied to the high-temperature complex atmosphere oxygen industry, such as the fields of oxygen-enriched combustion, water decomposition, methane coupling and the like.
本发明设计和制备了一种高透氧量的铜基双相混合导体透氧膜材料，属于无机功能陶瓷制造技术领域。该铜基双相混合导体透氧膜材料的通式为Ce0.85Pr0.1Cu0.05O2‑δ‑PrxSr1‑xFe1‑yCuyO3‑δ(CPCO‑PxS1‑xF1‑yCyO；x＝0.6，0.4，y＝0.05，0.1，0.2)；首先通过一锅“溶胶‑凝胶”法制备所需的粉体，将粉体在马弗炉中950℃下煅烧12小时得到前驱体，然后将粉末压片烧结，得到最后所需的混合导体透氧膜。通过调控具有多价态的Pr元素及能够有效降低烧结温度的+2价Cu元素的比例从而得到高透氧量的混合导体透氧膜材料。本发明制备的膜材料在氦气/二氧化碳等气体吹扫下具有优异的氧通量，且在低氧氩气，腐蚀性二氧化碳气氛下展现出了良好的稳定性。本发明可以作为新型氧源应用于高温复杂气氛用氧行业，例如富氧燃烧，水分解及甲烷偶联等领域。
Copper-based double-phase mixed conductor oxygen permeation membrane material with high oxygen permeation amount and preparation method thereof
The invention provides a copper-based double-phase mixed conductor oxygen permeation membrane material with high oxygen permeation amount, and belongs to the technical field of inorganic functional ceramic manufacturing. The general formula of the copper-based double-phase mixed conductor oxygen permeation membrane material is Ce < 0.85 > Pr < 0.1 > Cu < 0.05 > O < 2-delta >-Pr < x > Sr < 1-x > Fe < 1-y > Cu < y > O < 3-delta > (CPCO-P < x > S < 1-x > F < 1-y > CyO, x is equal to 0.6 or 0.4, and y is equal to 0.05 or 0.1 or 0.2); the preparation method comprises the following steps: firstly, preparing required powder by a one-pot sol-gel method, calcining the powder in a muffle furnace at 950 DEG C for 12 hours to obtain a precursor, and then tabletting and sintering the powder to obtain the required mixed conductor oxygen permeation membrane. The mixed conductor oxygen permeation membrane material with high oxygen permeation amount is obtained by regulating and controlling the Pr element with multivalent states and the proportion of the + 2 valence Cu element capable of effectively reducing the sintering temperature. The prepared membrane material has excellent oxygen flux under purging of helium/carbon dioxide and other gases, and shows good stability in low-oxygen argon and corrosive carbon dioxide atmospheres. The material can be used as a novel oxygen source to be applied to the high-temperature complex atmosphere oxygen industry, such as the fields of oxygen-enriched combustion, water decomposition, methane coupling and the like.
本发明设计和制备了一种高透氧量的铜基双相混合导体透氧膜材料，属于无机功能陶瓷制造技术领域。该铜基双相混合导体透氧膜材料的通式为Ce0.85Pr0.1Cu0.05O2‑δ‑PrxSr1‑xFe1‑yCuyO3‑δ(CPCO‑PxS1‑xF1‑yCyO；x＝0.6，0.4，y＝0.05，0.1，0.2)；首先通过一锅“溶胶‑凝胶”法制备所需的粉体，将粉体在马弗炉中950℃下煅烧12小时得到前驱体，然后将粉末压片烧结，得到最后所需的混合导体透氧膜。通过调控具有多价态的Pr元素及能够有效降低烧结温度的+2价Cu元素的比例从而得到高透氧量的混合导体透氧膜材料。本发明制备的膜材料在氦气/二氧化碳等气体吹扫下具有优异的氧通量，且在低氧氩气，腐蚀性二氧化碳气氛下展现出了良好的稳定性。本发明可以作为新型氧源应用于高温复杂气氛用氧行业，例如富氧燃烧，水分解及甲烷偶联等领域。
Copper-based double-phase mixed conductor oxygen permeation membrane material with high oxygen permeation amount and preparation method thereof
一种高透氧量的铜基双相混合导体透氧膜材料及其制备方法
LUO HUIXIA (Autor:in) / WANG XIAOPENG (Autor:in) / HUANG YANHAO (Autor:in) / ZENG LINGYONG (Autor:in) / HE YIYI (Autor:in)
17.08.2021
Patent
Elektronische Ressource
Chinesisch
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