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Title: Equilibrium and Absorption Kinetics of Carbon Dioxide by solid Supported Amine Sorbent

Abstract

The equilibrium and conversion-time data on the absorption of carbon dioxide (CO{sub 2}) with amine-based solid sorbent were analyzed over the range of 303–373 K. Data on CO{sub 2} loading on amine based solid sorbent at these temperatures and CO{sub 2} partial pressure between 10 and 760 mm Hg obtained from volumetric adsorption apparatus were fitted to a simple equilibrium model to generate the different parameters (including equilibrium constant) in the model. Using these constants, a correlation was obtained to define equilibrium constant and maximum CO{sub 2} loading as a function of temperature. In this study, a shrinking core model (SCM) was applied to elucidate the relative importance of pore diffusion and surface chemical reaction in controlling the rate of reaction. Application of SCM to the data suggested a surface reaction-controlled mechanism for the temperature of up to 40°C and pore-diffusion mechanism at higher temperature.

Authors:
; ;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1081452
Report Number(s):
TPR-3079
Journal ID: ISSN 0001-1541
DOE Contract Number:  
DE-FE0004000
Resource Type:
Journal Article
Journal Name:
AIChE Journal
Additional Journal Information:
Journal Volume: 51; Journal Issue: 11; Journal ID: ISSN 0001-1541
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; adsorption gas; diffusion; gas purification; reaction kinetics; design

Citation Formats

Monazam, Esmail R., Shadle, Lawrence J., and Siriwardane, Ranjani. Equilibrium and Absorption Kinetics of Carbon Dioxide by solid Supported Amine Sorbent. United States: N. p., 2011. Web. doi:10.1002/aic.12516.
Monazam, Esmail R., Shadle, Lawrence J., & Siriwardane, Ranjani. Equilibrium and Absorption Kinetics of Carbon Dioxide by solid Supported Amine Sorbent. United States. https://doi.org/10.1002/aic.12516
Monazam, Esmail R., Shadle, Lawrence J., and Siriwardane, Ranjani. 2011. "Equilibrium and Absorption Kinetics of Carbon Dioxide by solid Supported Amine Sorbent". United States. https://doi.org/10.1002/aic.12516.
@article{osti_1081452,
title = {Equilibrium and Absorption Kinetics of Carbon Dioxide by solid Supported Amine Sorbent},
author = {Monazam, Esmail R. and Shadle, Lawrence J. and Siriwardane, Ranjani},
abstractNote = {The equilibrium and conversion-time data on the absorption of carbon dioxide (CO{sub 2}) with amine-based solid sorbent were analyzed over the range of 303–373 K. Data on CO{sub 2} loading on amine based solid sorbent at these temperatures and CO{sub 2} partial pressure between 10 and 760 mm Hg obtained from volumetric adsorption apparatus were fitted to a simple equilibrium model to generate the different parameters (including equilibrium constant) in the model. Using these constants, a correlation was obtained to define equilibrium constant and maximum CO{sub 2} loading as a function of temperature. In this study, a shrinking core model (SCM) was applied to elucidate the relative importance of pore diffusion and surface chemical reaction in controlling the rate of reaction. Application of SCM to the data suggested a surface reaction-controlled mechanism for the temperature of up to 40°C and pore-diffusion mechanism at higher temperature.},
doi = {10.1002/aic.12516},
url = {https://www.osti.gov/biblio/1081452}, journal = {AIChE Journal},
issn = {0001-1541},
number = 11,
volume = 51,
place = {United States},
year = {Tue Nov 01 00:00:00 EDT 2011},
month = {Tue Nov 01 00:00:00 EDT 2011}
}