Performance of Sm0.7Sr0.3CoO3-δ dmembrane under CO2-containing atmosphere
来源期刊：Rare Metals2016年第9期
论文作者：Yu-Wen Zhang Fan-Lin Zeng Chen-Chen Yu Cheng-Zhang Wu Wei-Zhong Ding Xiong-Gang Lu
文章页码：723 - 728
摘 要：The permeability and stability of Sm0.7Sr0.3CoO3-δ（SSCO） regarding the special requirements for carbon capture and storage（CCS） application were investigated.Pure CO was used as the sweep gas at 900 °C,leading to that the oxygen permeation flux decreases by about 34 %.Several cycles of changing the sweep gas between helium and CO2 indicate the good reversibility of this degradation.Both carbonate formation and adsorption of CO2 on the membrane surface are responsible for the degradation of the membrane performance.The better CO2 resistance results from the substitution of Sm for Sr due to the higher acidity of Sm2O3（1.278） than that of Sr O（0.978） and a discontinuous layer of carbonate.
Yu-Wen Zhang，Fan-Lin Zeng，Chen-Chen Yu，Cheng-Zhang Wu，Wei-Zhong Ding，Xiong-Gang Lu
Shanghai Key Laboratory of Modern Metallurgy and Materials Processing,Shanghai University
摘 要：The permeability and stability of Sm0.7Sr0.3CoO3-δ（SSCO） regarding the special requirements for carbon capture and storage（CCS） application were investigated.Pure CO was used as the sweep gas at 900 °C,leading to that the oxygen permeation flux decreases by about 34 %.Several cycles of changing the sweep gas between helium and CO2 indicate the good reversibility of this degradation.Both carbonate formation and adsorption of CO2 on the membrane surface are responsible for the degradation of the membrane performance.The better CO2 resistance results from the substitution of Sm for Sr due to the higher acidity of Sm2O3（1.278） than that of Sr O（0.978） and a discontinuous layer of carbonate.
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