Oxygen removal from nitrogen using YBaCo(2)O(5+δ) adsorbent

Haoshan Hao; Bojun Chen; Limin Zhao; Xing Hu

Korean Journal of Chemical Engineering, Vol.28, No.2, 563-566, February, 2011

DOI10.1007/s11814-010-0354-9 Export Citation

Oxygen removal from nitrogen using YBaCo(2)O(5+δ) adsorbent

Haoshan Hao^{1, 2, †}, Bojun Chen³, Limin Zhao¹, and Xing Hu²

¹Department of Mathematical and Physical Sciences, Henan Institute of Engineering, Zhengzhou 451191, China
²Key Laboratory of Material Physics of Ministry of Education, Zhengzhou University, Zhengzhou 450052, China
³Department of Physics and Electronic Engineering, Zhoukou Normal University, Zhoukou 466001, China

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The oxygen intake/release behavior of YBaCo(2)O(5+δ) and its application as a medium-temperature (100-600 ℃) adsorbent to oxygen removal in nitrogen purification was investigated. The oxygen content in YBaCo(2)O(5+δ) was varied between 5.46 and 5.0 with the change of the temperature and oxygen partial pressure. This oxygen nonstoichiometry showed good reversibility and the crystal structure of YBaCo(2)O(5+δ) remained stable in the oxygen intake/release process. Results of nitrogen purification experiment show that YBaCo(2)O(5+δ) material is a promising candidate to remove trace oxygen from nitrogen. After being deoxidized at 600 ℃ in nitrogen, 1 kg YBaCo(2)O(5+δ) adsorbent can purify 310 L nitrogen of 98.1% to high-purity nitrogen of over 99.9999% in one cycle.

Keywords:YBaCo(2)O(5+δ);Oxygen Intake/Release;Adsorbent;Nitrogen Purification

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[2] Park JH, Park SD, Korean J. Chem. Eng., 24(5), 897 (2007)

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[5] Yang ZH, Lin YS, Zeng Y, Ind. Eng. Chem. Res., 41(11), 2775 (2002)

[6] Yang DL, Mo J, Lu HX, Guo YQ, Gao ZS, Hu X, J. Rare Earths., 23, 112 (2005)

[7] Yang ZH, Lin YS, Ind. Eng. Chem. Res., 42(19), 4376 (2003)

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[18] Taskin AA, Lavrov AN, Ando Y, Appl. Phys. Lett., 86, 091910 (2005)

[19] Kim G, Wang S, Jacobson AJ, Yuan Z, Donner W, Chen CL, Reimus L, Brodersen P, Mims CA, Appl. Phys. Lett., 88, 024103 (2006)

[20] Zeng Y, Lin YS, Solid State Ion., 110(3-4), 209 (1998)

[21] Hu J, Hu X, Hao HS, Guo LJ, Song HZ, Yang DL, Solid State Ion., 176(5-6), 487 (2005)

[22] Hu J, Hao HS, Chen CP, Yang DL, Hu X, J. Membr. Sci., 280(1-2), 809 (2006)