Evaluation of dynamic gas chromatographic methods for the determination of adsorption and solution isotherms

Huber, J.F.K.; Gerritse, R.G.

doi:10.1016/s0021-9673(00)96607-x

Cited by 200 publications

(37 citation statements)

References 46 publications

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“…(1) is nearly the envelope of the tails of the simulated peaks. This is used by the peak profile method (Huber and Gerritse, 1971) to determine the slope of the isotherm from a single peak tail. But, due to slow uptake into the surface, this method is not applicable for SO 2 on ice.…”

Section: Consistency Of the Peak Maxima Methodsmentioning

confidence: 99%

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Gas chromatography using ice-coated fused silica columns: study of adsorption of sulfur dioxide on water ice

Langenberg

Schurath

2018

Atmos. Chem. Phys.

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Abstract. The well established technique of gas chromatography is used to investigate interactions of sulfur dioxide with a crystalline ice film in a fused silica wide bore column. Peak shape analysis of SO 2 chromatograms measured in the temperature range 205-265 K is applied to extract parameters describing a combination of three processes: (i) physisorption of SO 2 at the surface, (ii) dissociative reaction with water and (iii) slow uptake into bulk ice. Process (ii) is described by a dissociative Langmuir isotherm. The pertinent monolayer saturation capacity is found to increase with temperature. The impact of process (iii) on SO 2 peak retention time is found to be negligible under our experimental conditions. By analyzing binary chromatograms of hydrophobic nhexane and hydrophilic acetone, the premelt surface layer is investigated in the temperature range 221-263 K, possibly giving rise to irregular adsorption. Both temperature dependencies fit simple van't Hoff equations as expected for process (i), implying that irregular adsorption of acetone is negligible in the investigated temperature range. Adsorption enthalpies of −45 ± 5 and −23±2 kJ mol −1 are obtained for acetone and n-hexane.The motivation of our study was to assess the vertical displacement of SO 2 and acetone in the wake of aircraft by adsorption on ice particles and their subsequent sedimentation. Our results suggest that this transport mechanism is negligible.

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Section: Consistency Of the Peak Maxima Methodsmentioning

confidence: 99%

“…For further analysis, the peak maximum method (Huber and Gerritse, 1971) is applied to determine (∂q/∂p) as a function of p: it is assumed that Eq. (1) applies to the peak maximum, an assumption which is verified afterwards by the peak shape calculation; see discussion.…”

Section: Adsorption Of Somentioning

confidence: 99%

Gas chromatography using ice-coated fused silica columns: study of adsorption of sulfur dioxide on water ice

Langenberg

Schurath

2018

Atmos. Chem. Phys.

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“…For further analysis, the peak maximum method (Huber and Gerritse, 1971) is applied to determine (∂q/∂p) as function of p:…”

Section: Modelmentioning

confidence: 99%

“…The slope of the adsorption isotherm was determined by the peak maxima method of gas-chromatography (Huber and Gerritse, 1971): from t n and the column void time t 0 , the capacity ratio k was measured as function of partial pressure p of Figure 1. Exploded view of the box used for the coating procedure.…”

mentioning

confidence: 99%

Gas-Chromatography using ice coated fused silica-columns: Study of adsorption of sulfur dioxide on water-ice

Langenberg¹,

Schurath²

2017

Preprint

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Abstract. The well-established technique of gas chromatography is used to investigate interactions of sulfur dioxide with a crystalline ice film in a fused silica wide-bore column. Peak shape analysis of SO 2 chromatograms measured in the temperature range 205 -265 K is applied to extract parameters describing a combination of three processes: (i) physisorption of SO 2 at the surface; (ii) dissociative reaction with water; (iii) slow uptake into bulk ice. Process (ii) is described by a dissociative Langmuir isotherm. The pertinent monolayer saturation capacity is found to increase with temperature. The impact of process (iii) on 5 SO 2 peak retention time is found to be negligible under our experimental conditions. By analyzing binary chromatograms of hydrophobic n-hexane and hydrophilic acetone, the premelt surface layer is probed in the temperature range 221 -263 K possibly giving rise to irregular adsorption. Both temperature dependencies fit simple van't Hoff equations as expected for process (i), implying that irregular adsorption of acetone is negligible in the probed temperature range. Adsorption enthalpies of −45 ± 5 kJ mol −1 and −23 ± 2 kJ mol −1 are obtained for acetone and n-hexane. 10Our study was motivated to assess the vertical displacement of SO 2 and acetone in the wake of aircraft by adsorption on ice particles and their subsequent sedimentation. Our results suggest that this transport mechanism is negligible.

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“…Comparison of some methods for estimating the isotherms has been made for gas chromatography. 6) The assumption of no axial dispersion would be satisfied only for analytical chromatography, but not for a preparative one using packing materials with fairly large diameters. A batch wise method or a frontal analysis of breakthrough curves is usually adopted for measuring nonlinear adsorption isotherms.…”

mentioning

confidence: 99%

Methods for Estimating the Parameters of Nonlinear Adsorption Isotherms of Langmuir and Freundlich Types from a Response Curve of Pulse Input of an Adsorbate

Adachi

Panintrarux

Matsuno

1997

Bioscience, Biotechnology, and Biochemistry

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Evaluation of dynamic gas chromatographic methods for the determination of adsorption and solution isotherms

Cited by 200 publications

References 46 publications

Gas chromatography using ice-coated fused silica columns: study of adsorption of sulfur dioxide on water ice

Gas chromatography using ice-coated fused silica columns: study of adsorption of sulfur dioxide on water ice

Gas-Chromatography using ice coated fused silica-columns: Study of adsorption of sulfur dioxide on water-ice

Methods for Estimating the Parameters of Nonlinear Adsorption Isotherms of Langmuir and Freundlich Types from a Response Curve of Pulse Input of an Adsorbate

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