Equilibrium adsorption isotherms of pure N2 and O2 and their binary mixtures on LiLSX zeolite: Experimental data and thermodynamic analysis

Chin Wen Wu, Mayuresh V. Kothare, Shivaji Sircar

Research output: Contribution to journalArticlepeer-review

Abstract

An isothermal-isobaric column dynamic test apparatus was built to measure equilibrium adsorption isotherms of pure N2 and O2 and their binary mixtures at 0, 30, and 65 °C in the pressure range of 0-6 atm on LiLSX zeolite. The data successfully passed an integral and a differential thermodynamic consistency test between pure and binary gas isotherms. The binary selectivities of N2 over O2 were functions of the gas-phase mole fraction and pressure, and the pure gas isosteric heats of adsorption decreased with increased loadings. Thus, the adsorbent was energetically heterogeneous for both gases. The degree of heterogeneity for N2 was larger than that for O2.

Original languageEnglish (US)
Pages (from-to)7195-7201
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume53
Issue number17
DOIs
StatePublished - Apr 30 2014
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

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