Rare earth complex adsorbent for carbon monoxide-nitrogen separation and its pressure swing adsorption characteristics

Xiao Qin Liu, Zheng Fei Ma, Hua Mei, Hu Qing Yao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In order to separate carbon monoxide-nitrogen mixture more efficiently, which now is commonly separated with common adsorbents, the development for a new adsorbent, composed by a rare earth complex adsorbent with Cu(I) supported on activated carbon, for carbon monoxide-nitrogen separation was described. The adsorption equilibrium of CO, CO2, CH4, N2 and pressure swing adsorption performance of gas mixture containing CO-N2 on the rare earth complex adsorbent and 5A molecule sieve were carried out and compared. The desorption equilibrium of CO on the new adsorbent was also measured. The experimental results show that the new adsorbent has high selectivity for CO in CO-N2 mixtures even when CO concentration is low, in which the rare earth compound promotes the stability of Cu(I) and increases the capacity for CO adsorption. The performance of fixed-bed dynamics indicates that the new adsorbent is suitable both for CO removal with high purity and for CO production by pressure swing adsorption with little influence of N2 existence, and has potential for industrial application in the CO-N2 mixtures separation for CO removal or its production.

Original languageEnglish
Pages (from-to)323-327
Number of pages5
JournalGao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities
Volume15
Issue number4
StatePublished - Aug 2001

Keywords

  • Adsorbent
  • Carbon monoxide
  • Nitrogen
  • Pressure swing adsorption
  • Rare earth

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