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Aluminum-containing biphase mixed conductor oxygen permeation membrane material with good stability and preparation method thereof
The invention designs and prepares an aluminum-containing biphase 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 biphase mixed conductor oxygen permeation membrane material is 60Ce0.9La0.1O< 2-delta>-40La0.6Sr0.4Co<1-x>AlxO<3-delta> (x is equal to 0.05, 0.1, 0.2, 0.3 or 0.35). The preparation method comprises the steps of preparing required powder by using an improved one-pot-sol-gel method, calcining the powder in a muffle furnace at the temperature of 950 DEG C for 12 hours to obtain a precursor, tabletting the powder, and sintering at the temperature of 1250 DEG C to finally 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 proportion of the multivalent and economical Al element. The biphase membrane material prepared by the method has excellent oxygen flux under the purging of gases such as helium/carbon dioxide. The material shows good long-term stability in low-oxygen argon and corrosive carbon dioxide atmospheres, and 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 and methane coupling.
本发明设计并制备了一种高透氧量的含铝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。该双相混合导体透氧膜材料的通式为60Ce0.9La0.1O2‑δ‑40La0.6Sr0.4Co1‑xAlxO3‑δ(x＝0.05，0.1，0.2，0.3，0.35)；首先使用改进过的一锅‑溶胶‑凝胶法制备所需的粉体，而后将粉体在马弗炉中950℃下煅烧12小时从而得到前驱体，将粉末压片并在1250℃烧结，最后得到所需的混合导体透氧膜。通过调控具有多价态且经济的Al元素的比例从而得到高透氧量的混合导体透氧膜材料。本发明制备的双相膜材料在氦气/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长期稳定性，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。
Aluminum-containing biphase mixed conductor oxygen permeation membrane material with good stability and preparation method thereof
The invention designs and prepares an aluminum-containing biphase 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 biphase mixed conductor oxygen permeation membrane material is 60Ce0.9La0.1O< 2-delta>-40La0.6Sr0.4Co<1-x>AlxO<3-delta> (x is equal to 0.05, 0.1, 0.2, 0.3 or 0.35). The preparation method comprises the steps of preparing required powder by using an improved one-pot-sol-gel method, calcining the powder in a muffle furnace at the temperature of 950 DEG C for 12 hours to obtain a precursor, tabletting the powder, and sintering at the temperature of 1250 DEG C to finally 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 proportion of the multivalent and economical Al element. The biphase membrane material prepared by the method has excellent oxygen flux under the purging of gases such as helium/carbon dioxide. The material shows good long-term stability in low-oxygen argon and corrosive carbon dioxide atmospheres, and 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 and methane coupling.
本发明设计并制备了一种高透氧量的含铝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。该双相混合导体透氧膜材料的通式为60Ce0.9La0.1O2‑δ‑40La0.6Sr0.4Co1‑xAlxO3‑δ(x＝0.05，0.1，0.2，0.3，0.35)；首先使用改进过的一锅‑溶胶‑凝胶法制备所需的粉体，而后将粉体在马弗炉中950℃下煅烧12小时从而得到前驱体，将粉末压片并在1250℃烧结，最后得到所需的混合导体透氧膜。通过调控具有多价态且经济的Al元素的比例从而得到高透氧量的混合导体透氧膜材料。本发明制备的双相膜材料在氦气/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长期稳定性，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。
Aluminum-containing biphase mixed conductor oxygen permeation membrane material with good stability and preparation method thereof
一种具有良好稳定性的含铝双相混合导体透氧膜材料及其制备方法
LUO HUIXIA (author) / LI DONGCHENG (author) / WANG XIAOPENG (author) / HUANG YANHAO (author) / ZENG LINGYONG (author) / HE YIYI (author)
2021-07-16
Patent
Electronic Resource
Chinese
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2015
| European Patent Office | 2015