Adsorption of H2O and CO2 on supported amine sorbents

Rens Veneman, Natalia Frigka, Wenying Zhao, Zhenshan Li, Sascha R.A. Kersten, Derk Willem Frederik Brilman

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Abstract

In this work the adsorption of H2O and CO2 on Lewatit VP OC 1065 was studied in view of the potential application of this sorbent in post combustion CO2 capture. Both CO2 and H2O were found to adsorb on the amine active sites present on the pore surface of the sorbent material. However, where the interaction between CO2 and the amine groups is chemical, the adsorption behaviour of H2O on Lewatit VP OC 1065 shows the characteristics of physical multilayer adsorption. The difference in interaction is also clearly reflected in the differences in the adsorption heat (View the MathML sourceΔHH2O=43 kJ mol−1, View the MathML sourceΔHCO2 = 70–80 kJ mol−1) and the capacity. The highest H2O capacity observed was 12.5 mol kg−1 (at 95% RH). The highest CO2 capacity observed was 2.8 mol kg−1 (303 K, PCO2PCO2 = 81 kPa). Due to these high H2O capacities the sorbent material can adsorb practically all water that enters the adsorber column which increases the total energy demand of the sorbent based post-combustion capture process with 40%. To prevent the co-adsorption of large quantities of water several options were analyzed using the adsorption isotherms obtained for CO2 and H2O. Lowering the dew point of the flue gas upstream of the adsorber was identified as the most viable option.
Original languageEnglish
Pages (from-to)268-275
Number of pages8
JournalInternational journal of greenhouse gas control
Volume41
DOIs
Publication statusPublished - 2015

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Sorbents
Amines
adsorption
Adsorption
combustion
dew point
Adsorption isotherms
Flue gases
Water
Multilayers
amine
isotherm
water

Keywords

  • METIS-311269
  • IR-97389

Cite this

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title = "Adsorption of H2O and CO2 on supported amine sorbents",
abstract = "In this work the adsorption of H2O and CO2 on Lewatit VP OC 1065 was studied in view of the potential application of this sorbent in post combustion CO2 capture. Both CO2 and H2O were found to adsorb on the amine active sites present on the pore surface of the sorbent material. However, where the interaction between CO2 and the amine groups is chemical, the adsorption behaviour of H2O on Lewatit VP OC 1065 shows the characteristics of physical multilayer adsorption. The difference in interaction is also clearly reflected in the differences in the adsorption heat (View the MathML sourceΔHH2O=43 kJ mol−1, View the MathML sourceΔHCO2 = 70–80 kJ mol−1) and the capacity. The highest H2O capacity observed was 12.5 mol kg−1 (at 95{\%} RH). The highest CO2 capacity observed was 2.8 mol kg−1 (303 K, PCO2PCO2 = 81 kPa). Due to these high H2O capacities the sorbent material can adsorb practically all water that enters the adsorber column which increases the total energy demand of the sorbent based post-combustion capture process with 40{\%}. To prevent the co-adsorption of large quantities of water several options were analyzed using the adsorption isotherms obtained for CO2 and H2O. Lowering the dew point of the flue gas upstream of the adsorber was identified as the most viable option.",
keywords = "METIS-311269, IR-97389",
author = "Rens Veneman and Natalia Frigka and Wenying Zhao and Zhenshan Li and Kersten, {Sascha R.A.} and Brilman, {Derk Willem Frederik}",
year = "2015",
doi = "10.1016/j.ijggc.2015.07.014",
language = "English",
volume = "41",
pages = "268--275",
journal = "International journal of greenhouse gas control",
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Adsorption of H2O and CO2 on supported amine sorbents. / Veneman, Rens; Frigka, Natalia; Zhao, Wenying; Li, Zhenshan; Kersten, Sascha R.A.; Brilman, Derk Willem Frederik.

In: International journal of greenhouse gas control, Vol. 41, 2015, p. 268-275.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Adsorption of H2O and CO2 on supported amine sorbents

AU - Veneman, Rens

AU - Frigka, Natalia

AU - Zhao, Wenying

AU - Li, Zhenshan

AU - Kersten, Sascha R.A.

AU - Brilman, Derk Willem Frederik

PY - 2015

Y1 - 2015

N2 - In this work the adsorption of H2O and CO2 on Lewatit VP OC 1065 was studied in view of the potential application of this sorbent in post combustion CO2 capture. Both CO2 and H2O were found to adsorb on the amine active sites present on the pore surface of the sorbent material. However, where the interaction between CO2 and the amine groups is chemical, the adsorption behaviour of H2O on Lewatit VP OC 1065 shows the characteristics of physical multilayer adsorption. The difference in interaction is also clearly reflected in the differences in the adsorption heat (View the MathML sourceΔHH2O=43 kJ mol−1, View the MathML sourceΔHCO2 = 70–80 kJ mol−1) and the capacity. The highest H2O capacity observed was 12.5 mol kg−1 (at 95% RH). The highest CO2 capacity observed was 2.8 mol kg−1 (303 K, PCO2PCO2 = 81 kPa). Due to these high H2O capacities the sorbent material can adsorb practically all water that enters the adsorber column which increases the total energy demand of the sorbent based post-combustion capture process with 40%. To prevent the co-adsorption of large quantities of water several options were analyzed using the adsorption isotherms obtained for CO2 and H2O. Lowering the dew point of the flue gas upstream of the adsorber was identified as the most viable option.

AB - In this work the adsorption of H2O and CO2 on Lewatit VP OC 1065 was studied in view of the potential application of this sorbent in post combustion CO2 capture. Both CO2 and H2O were found to adsorb on the amine active sites present on the pore surface of the sorbent material. However, where the interaction between CO2 and the amine groups is chemical, the adsorption behaviour of H2O on Lewatit VP OC 1065 shows the characteristics of physical multilayer adsorption. The difference in interaction is also clearly reflected in the differences in the adsorption heat (View the MathML sourceΔHH2O=43 kJ mol−1, View the MathML sourceΔHCO2 = 70–80 kJ mol−1) and the capacity. The highest H2O capacity observed was 12.5 mol kg−1 (at 95% RH). The highest CO2 capacity observed was 2.8 mol kg−1 (303 K, PCO2PCO2 = 81 kPa). Due to these high H2O capacities the sorbent material can adsorb practically all water that enters the adsorber column which increases the total energy demand of the sorbent based post-combustion capture process with 40%. To prevent the co-adsorption of large quantities of water several options were analyzed using the adsorption isotherms obtained for CO2 and H2O. Lowering the dew point of the flue gas upstream of the adsorber was identified as the most viable option.

KW - METIS-311269

KW - IR-97389

U2 - 10.1016/j.ijggc.2015.07.014

DO - 10.1016/j.ijggc.2015.07.014

M3 - Article

VL - 41

SP - 268

EP - 275

JO - International journal of greenhouse gas control

JF - International journal of greenhouse gas control

SN - 1750-5836

ER -