Oxygen permeation through a CO2‐tolerant mixed conducting oxide (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ
Oxygen permeation through a CO2‐tolerant mixed conducting oxide (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ
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DOI：
10.1002/aic.12742
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发表时间：
2012-08
期刊：
影响因子：
3.7
通讯作者：
Jun Tang;Yanying Wei;Lingyi Zhou;Zhong Li;Haihui Wang
中科院分区：
文献类型：
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作者：
Jun Tang;Yanying Wei;Lingyi Zhou;Zhong Li;Haihui Wang
采用溶胶-凝胶法制备了一种K2 NiF 4型（Pr0.9La0.1）2（Ni0.74Cu0.21Ga0.05）O 4 +d（PLNCG）致密混合导电陶瓷膜。纯CO2吹扫膜的透氧通量与He吹扫膜的透氧通量相当。研究了PLNCG在纯CO2下的透氧性能和稳定性。使用纯CO2作为吹扫气体，在975 ℃下以0.32 mL/（min cm 2）的恒定氧渗透通量稳定地操作厚度为0.8 mm的膜230 h。X射线衍射分析表明，PLNCG在长时间暴露于纯CO2中后，仍能保持其萤石相，未观察到碳酸盐。(C)2011美国化学工程师学会AIChE J，58：24732478，2012
A novel K2NiF4-type oxide based on (Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+d (PLNCG) dense mixed conducting ceramic membrane was successfully prepared through a solgel route. The oxygen permeation flux through the membrane swept by pure CO2 was comparative to that swept by He. The oxygen permeation and the stability of PLNCG under pure CO2 were investigated in detail. A membrane with a thickness of 0.8 mm was steadily operated for 230 h with a constant oxygen permeation flux of 0.32 mL/(min cm2) at 975 degrees C using pure CO2 as sweep gas. X-ray diffraction shows that PLNCG can maintain its fluorite phase, and no carbonates were observed, even when it was exposed to pure CO2 for a long time. (C) 2011 American Institute of Chemical Engineers AIChE J, 58: 24732478, 2012