Abstract
The oxygen intake/release behavior of YBaCo2O5+δ and its application as a medium-temperature (100–600 °C) adsorbent to oxygen removal in nitrogen purification was investigated. The oxygen content in YBaCo2O5+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 YBaCo2O5+δ remained stable in the oxygen intake/release process. Results of nitrogen purification experiment show that YBaCo2O5+δ material is a promising candidate to remove trace oxygen from nitrogen. After being deoxidized at 600 °C in nitrogen, 1 kg YBaCo2O5+δ adsorbent can purify 310 L nitrogen of 98.1% to high-purity nitrogen of over 99.9999% in one cycle.
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Hao, H., Chen, B., Zhao, L. et al. Oxygen removal from nitrogen using YBaCo2O5+δ adsorbent. Korean J. Chem. Eng. 28, 563–566 (2011). https://doi.org/10.1007/s11814-010-0354-9
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DOI: https://doi.org/10.1007/s11814-010-0354-9