Adsorption isotherms and isosteric enthalpy of adsorption for assorted refrigerants on activated carbons

Wai Soong Loh; Azhar Bin Ismail; Baojuan Xi; Kim Choon Ng; Won Gee Chun

doi:10.1021/je3008099

Adsorption isotherms and isosteric enthalpy of adsorption for assorted refrigerants on activated carbons

Wai Soong Loh, Azhar Bin Ismail, Baojuan Xi, Kim Choon Ng^*, Won Gee Chun

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Abstract

This paper features the adsorption equilibria of refrigerants R134a, R290, R410a, and R507a on microporous activated carbon samples at temperatures between 278 K and 338 K with pressures up to 1.4 MPa. The adsorption isotherm data are obtained by utilizing the constant-volume-variable-pressure (CVVP) approach and analyzed using the Dubinin-Ashtakov (DA) model. The regressed adsorption parameters acquired by using this model produces isotherm curves that agree within 5 % of the experimental results. The concentration- and temperature-dependent enthalpies of adsorption of these pairs are evaluated and presented.

Original language	English (US)
Pages (from-to)	2766-2773
Number of pages	8
Journal	Journal of Chemical and Engineering Data
Volume	57
Issue number	10
DOIs	https://doi.org/10.1021/je3008099
State	Published - 2011

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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title = "Adsorption isotherms and isosteric enthalpy of adsorption for assorted refrigerants on activated carbons",

abstract = "This paper features the adsorption equilibria of refrigerants R134a, R290, R410a, and R507a on microporous activated carbon samples at temperatures between 278 K and 338 K with pressures up to 1.4 MPa. The adsorption isotherm data are obtained by utilizing the constant-volume-variable-pressure (CVVP) approach and analyzed using the Dubinin-Ashtakov (DA) model. The regressed adsorption parameters acquired by using this model produces isotherm curves that agree within 5 % of the experimental results. The concentration- and temperature-dependent enthalpies of adsorption of these pairs are evaluated and presented.",

author = "Loh, {Wai Soong} and Ismail, {Azhar Bin} and Baojuan Xi and Ng, {Kim Choon} and Chun, {Won Gee}",

year = "2011",

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T1 - Adsorption isotherms and isosteric enthalpy of adsorption for assorted refrigerants on activated carbons

AU - Loh, Wai Soong

AU - Ismail, Azhar Bin

AU - Xi, Baojuan

AU - Ng, Kim Choon

AU - Chun, Won Gee

PY - 2011

Y1 - 2011

N2 - This paper features the adsorption equilibria of refrigerants R134a, R290, R410a, and R507a on microporous activated carbon samples at temperatures between 278 K and 338 K with pressures up to 1.4 MPa. The adsorption isotherm data are obtained by utilizing the constant-volume-variable-pressure (CVVP) approach and analyzed using the Dubinin-Ashtakov (DA) model. The regressed adsorption parameters acquired by using this model produces isotherm curves that agree within 5 % of the experimental results. The concentration- and temperature-dependent enthalpies of adsorption of these pairs are evaluated and presented.

AB - This paper features the adsorption equilibria of refrigerants R134a, R290, R410a, and R507a on microporous activated carbon samples at temperatures between 278 K and 338 K with pressures up to 1.4 MPa. The adsorption isotherm data are obtained by utilizing the constant-volume-variable-pressure (CVVP) approach and analyzed using the Dubinin-Ashtakov (DA) model. The regressed adsorption parameters acquired by using this model produces isotherm curves that agree within 5 % of the experimental results. The concentration- and temperature-dependent enthalpies of adsorption of these pairs are evaluated and presented.

UR - http://www.scopus.com/inward/record.url?scp=84870213495&partnerID=8YFLogxK

U2 - 10.1021/je3008099

DO - 10.1021/je3008099

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AN - SCOPUS:84870213495

SN - 0021-9568

VL - 57

SP - 2766

EP - 2773

JO - Journal of Chemical and Engineering Data

JF - Journal of Chemical and Engineering Data

IS - 10

ER -

Adsorption isotherms and isosteric enthalpy of adsorption for assorted refrigerants on activated carbons

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