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

doi:10.1021/ie500268s

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 journal › Article › peer-review

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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 language	English (US)
Pages (from-to)	7195-7201
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	53
Issue number	17
DOIs	https://doi.org/10.1021/ie500268s
State	Published - Apr 30 2014
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
General Chemistry
Industrial and Manufacturing Engineering

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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.",

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AU - Kothare, Mayuresh V.

AU - Sircar, Shivaji

PY - 2014/4/30

Y1 - 2014/4/30

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AB - 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.

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

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