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Studies on Oxygen Characteristics of YBa_2Cu_3O_(7-x) and Its Applications to Air Separation and Gas Purification 被引量:4

Studies on Oxygen Characteristics of YBa_2Cu_3O_(7-x) and Its Applications to Air Separation and Gas Purification
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摘要 Oxygen diffusion and oxygen selective adsorption properties of rare earths material YBa_2Cu_3O_(7-x) (YBCO) were investigated by thermogravimetric, oxygen static adsorption and selectivity adsorption experiments. The results show that YBCO is a very good deoxidizing material. The oxygen desorption of YBCO begins remarkably at about 400 ℃, mass loss can arrive at 1.2% of its original quantity at 800 ℃. Oxygen can be completely absorbed back into the sample again when temperature descends to 400 ℃. The oxygen adsorption selectivity, reproducibility and oxygen adsorption under very low oxygen partial pressure make the material desirable for air separation and gas purification. High purity nitrogen gas was produced with the YBCO molecular sieves in the air separation and gas purification experiments. 0.017 m^3 of high purity nitrogen (>99.9999%) can be obtained with 1 kg YBCO molecular sieve in one cycle. As a deoxidant, an obvious advantage of YBCO is that no hydrogen is needed in its applications. Oxygen diffusion and oxygen selective adsorption properties of rare earths material YBa_2Cu_3O_(7-x) (YBCO) were investigated by thermogravimetric, oxygen static adsorption and selectivity adsorption experiments. The results show that YBCO is a very good deoxidizing material. The oxygen desorption of YBCO begins remarkably at about 400 ℃, mass loss can arrive at 1.2% of its original quantity at 800 ℃. Oxygen can be completely absorbed back into the sample again when temperature descends to 400 ℃. The oxygen adsorption selectivity, reproducibility and oxygen adsorption under very low oxygen partial pressure make the material desirable for air separation and gas purification. High purity nitrogen gas was produced with the YBCO molecular sieves in the air separation and gas purification experiments. 0.017 m^3 of high purity nitrogen (>99.9999%) can be obtained with 1 kg YBCO molecular sieve in one cycle. As a deoxidant, an obvious advantage of YBCO is that no hydrogen is needed in its applications.
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第1期112-115,共4页 稀土学报(英文版)
基金 Project supported by the Science and Technology of Henan Province (991110343)
关键词 metal materials YBCO oxygen characters gas separation and purification rare earths metal materials YBCO oxygen characters gas separation and purification rare earths
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  • 1[1]Matthias B T, Suhl H, Corenzwit E. Ferromagnetic superconductors [J]. Phys. Rev. Lett., 1958, 1:92.
  • 2[2]Maple M B, Fisher O. Superconductivity in Ternary Compounds [M]. Berlin:Springer-Verlag, 1982.
  • 3[3]Eisaki H, Takagi H, Cava R J, et al. Competition between magnetism and superconductivity in rare-earth nickel boride carbides [J]. Phys. Rev. B, 1994, 50:647.
  • 4[4]Felner I, Asaf U, Levi Y, et al. Coexistence of magnetism and superconductivity in RE1.4Ce0.6RuSr2Cu2O10-δ (RE=Eu and Gd) [J]. Phys. Rev. B, 1997, 55:R3347.
  • 5[5]Tallon J L, Bernhard C, Bowden M E, et al. Coexisting ferromagnetism andsuperconductivity in hybrid ruthenate-cuprate superconductors [J]. IEEE Trans. Appl. Supercon., 1999, 9:1969.
  • 6[6]Bernhard C, Tallon J L, Niedermayer Ch, et al. Coexistence ferromagnetism and superconductivity in the hybrid ruthenate-cuprate compound RuSr2GdCu2O8 studied by muon spin rotation and dc magnetization [J]. Phys. Rev. B, 1999, 59:14099.
  • 7[7]McLaughlin A C, Zhou W, Attfield J P, et al. Structure and microstructure of the ferromagnetic superconductor RuSr2GdCu2O8 [J]. Phys. Rev. B, 1999, 60:7512.
  • 8[8]Tallon J L, Loram J W, Williams G V M, et al. Heat capacity and transport studies of the ferromagnetic superconductor RuSr2GdCu2O8 [J]. Phys. Rev. B, 2000, 61:6471.
  • 9[9]Pickett W E, Weht P, Shick A B. Superconductivity in the ferromagnetic RuSr2GdCu2O8 [J]. Phys. Rev. Lett., 1999, 83:3713.
  • 10[10]Chmaissem O, Jorgensen J D, Shaked H, et al. Crystal and magnetic structure of ferromagnetic superconducting RuSr2GdCu2O8 [J]. Phys. Rev. B, 2000, 61:6401.

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