Evaluation of adsorption parameters and heats of adsorption through desorption measurements

Bidyut B. Saha; Shigeru Koyama; Ibrahim I. El-Sharkawy; Khairul Habib; Kandadai Srinivasan; Pradip Dutta

doi:10.1021/je700369j

Evaluation of adsorption parameters and heats of adsorption through desorption measurements

Bidyut B. Saha, Shigeru Koyama, Ibrahim I. El-Sharkawy, Khairul Habib, Kandadai Srinivasan, Pradip Dutta

Multiscale Science and Engineering for Energy and the Environment Thrust

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Abstract

The construction of an apparatus for the rapid measurement of the adsorption equilibrium characteristics and evaluation of the isosteric heat of adsorption of activated carbons for gaseous adsorbates is described. The method is based on measuring the amount desorbed between two equilibrium adsorption states. The measurement system has been tested for methane adsorption over (5 to 75)°C and pressures from (2 to 24) bar on a Maxsorb-III specimen of activated carbon. The results are evaluated through regressions with various isotherm equations used in the literature for physisorption and are compared with results of other researchers for comparable adsorbent-adsórbate combinations. A method of accounting for the adsorbed phase volume is proposed.

Original language	English
Pages (from-to)	2419-2424
Number of pages	6
Journal	Journal of Chemical and Engineering Data
Volume	52
Issue number	6
DOIs	https://doi.org/10.1021/je700369j
Publication status	Published - Nov 2007

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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10.1021/je700369j

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title = "Evaluation of adsorption parameters and heats of adsorption through desorption measurements",

abstract = "The construction of an apparatus for the rapid measurement of the adsorption equilibrium characteristics and evaluation of the isosteric heat of adsorption of activated carbons for gaseous adsorbates is described. The method is based on measuring the amount desorbed between two equilibrium adsorption states. The measurement system has been tested for methane adsorption over (5 to 75)°C and pressures from (2 to 24) bar on a Maxsorb-III specimen of activated carbon. The results are evaluated through regressions with various isotherm equations used in the literature for physisorption and are compared with results of other researchers for comparable adsorbent-ads{\'o}rbate combinations. A method of accounting for the adsorbed phase volume is proposed.",

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T1 - Evaluation of adsorption parameters and heats of adsorption through desorption measurements

AU - Saha, Bidyut B.

AU - Koyama, Shigeru

AU - El-Sharkawy, Ibrahim I.

AU - Habib, Khairul

AU - Srinivasan, Kandadai

AU - Dutta, Pradip

PY - 2007/11

Y1 - 2007/11

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AB - The construction of an apparatus for the rapid measurement of the adsorption equilibrium characteristics and evaluation of the isosteric heat of adsorption of activated carbons for gaseous adsorbates is described. The method is based on measuring the amount desorbed between two equilibrium adsorption states. The measurement system has been tested for methane adsorption over (5 to 75)°C and pressures from (2 to 24) bar on a Maxsorb-III specimen of activated carbon. The results are evaluated through regressions with various isotherm equations used in the literature for physisorption and are compared with results of other researchers for comparable adsorbent-adsórbate combinations. A method of accounting for the adsorbed phase volume is proposed.

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Evaluation of adsorption parameters and heats of adsorption through desorption measurements

Abstract

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