Synthesis of new amines for enhanced carbon dioxide (CO2) capture performance: The effect of chemical structure on equilibrium solubility, cyclic capacity, kinetics of absorption and regeneration, and heats of absorption and regeneration

Sudkanueng Singto, Teeradet Supap, Raphael Idem, Paitoon Tontiwachwuthikul, Supawan Tantayanon, Jaber Al Marri, Abdelbaki Benamor

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

This work focused on the synthesis of new tertiary amines by varying the alkyl chain length with/without hydroxyl group in the structure. The effect of chemical structure of newly synthesized tertiary amines; 4-(dimethylamino)-2-butanol (DMAB), 4-(dipropylamino)-2-butanol (DPAB), 4-(dibutylamino)-2-butanol (DBAB), 4-((2-hydroxyethyl)(methyl)amino)-2-butanol (HEMAB) and 4-((2-hydroxyethyl)(ethyl)amino)-2-butanol (HEEAB) were evaluated based on CO2 equilibrium solubility and cyclic capacity, as well as rates and heats of CO2 absorption and regeneration. The results showed that three amines (i.e. DMAB, HEMAB and HEEAB) had the highest CO2 absorption capacity (0.88, 0.44 and 0.68 mol CO2/mol amine at 313 K temperature and 15 kPa CO2 partial pressure), and cyclic capacity (0.52, 0.26 and 0.40 at 313-353 K temperature range, 15 kPa CO2 partial pressure). These amines also had fast CO2 absorption rate (0.082, 0.111 and 0.142 mol CO2/min) and CO2 regeneration rate (0.512, 0.452 and 0.295 mol CO2/min) while maintaining low heat of CO2 absorption (-34.17, -56.21 and -69.79 kJ/mol CO2) and heat input of CO2 regeneration (39.73, 60.48 and 72.44 kJ/mol CO2). Based on these results, DMAB, HEMAB, and HEEAB can be considered to be promising amine components for blending for a post combustion CO2 capture process.

Original languageEnglish
Pages (from-to)97-107
Number of pages11
JournalSeparation and Purification Technology
Volume167
DOIs
Publication statusPublished - 14 Jul 2016
Externally publishedYes

Fingerprint

Butenes
Carbon Dioxide
Amines
Carbon dioxide
Solubility
Kinetics
Partial pressure
Hot Temperature
2-butanol
Chain length
Hydroxyl Radical
Temperature

Keywords

  • Carbon dioxide absorption
  • CO absorption rate
  • CO regeneration rate
  • Cyclic capacity
  • Equilibrium solubility
  • Heat input of CO regeneration
  • Heat of CO absorption
  • Tertiary amines

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

Synthesis of new amines for enhanced carbon dioxide (CO2) capture performance : The effect of chemical structure on equilibrium solubility, cyclic capacity, kinetics of absorption and regeneration, and heats of absorption and regeneration. / Singto, Sudkanueng; Supap, Teeradet; Idem, Raphael; Tontiwachwuthikul, Paitoon; Tantayanon, Supawan; Al Marri, Jaber; Benamor, Abdelbaki.

In: Separation and Purification Technology, Vol. 167, 14.07.2016, p. 97-107.

Research output: Contribution to journalArticle

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abstract = "This work focused on the synthesis of new tertiary amines by varying the alkyl chain length with/without hydroxyl group in the structure. The effect of chemical structure of newly synthesized tertiary amines; 4-(dimethylamino)-2-butanol (DMAB), 4-(dipropylamino)-2-butanol (DPAB), 4-(dibutylamino)-2-butanol (DBAB), 4-((2-hydroxyethyl)(methyl)amino)-2-butanol (HEMAB) and 4-((2-hydroxyethyl)(ethyl)amino)-2-butanol (HEEAB) were evaluated based on CO2 equilibrium solubility and cyclic capacity, as well as rates and heats of CO2 absorption and regeneration. The results showed that three amines (i.e. DMAB, HEMAB and HEEAB) had the highest CO2 absorption capacity (0.88, 0.44 and 0.68 mol CO2/mol amine at 313 K temperature and 15 kPa CO2 partial pressure), and cyclic capacity (0.52, 0.26 and 0.40 at 313-353 K temperature range, 15 kPa CO2 partial pressure). These amines also had fast CO2 absorption rate (0.082, 0.111 and 0.142 mol CO2/min) and CO2 regeneration rate (0.512, 0.452 and 0.295 mol CO2/min) while maintaining low heat of CO2 absorption (-34.17, -56.21 and -69.79 kJ/mol CO2) and heat input of CO2 regeneration (39.73, 60.48 and 72.44 kJ/mol CO2). Based on these results, DMAB, HEMAB, and HEEAB can be considered to be promising amine components for blending for a post combustion CO2 capture process.",
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T1 - Synthesis of new amines for enhanced carbon dioxide (CO2) capture performance

T2 - The effect of chemical structure on equilibrium solubility, cyclic capacity, kinetics of absorption and regeneration, and heats of absorption and regeneration

AU - Singto, Sudkanueng

AU - Supap, Teeradet

AU - Idem, Raphael

AU - Tontiwachwuthikul, Paitoon

AU - Tantayanon, Supawan

AU - Al Marri, Jaber

AU - Benamor, Abdelbaki

PY - 2016/7/14

Y1 - 2016/7/14

N2 - This work focused on the synthesis of new tertiary amines by varying the alkyl chain length with/without hydroxyl group in the structure. The effect of chemical structure of newly synthesized tertiary amines; 4-(dimethylamino)-2-butanol (DMAB), 4-(dipropylamino)-2-butanol (DPAB), 4-(dibutylamino)-2-butanol (DBAB), 4-((2-hydroxyethyl)(methyl)amino)-2-butanol (HEMAB) and 4-((2-hydroxyethyl)(ethyl)amino)-2-butanol (HEEAB) were evaluated based on CO2 equilibrium solubility and cyclic capacity, as well as rates and heats of CO2 absorption and regeneration. The results showed that three amines (i.e. DMAB, HEMAB and HEEAB) had the highest CO2 absorption capacity (0.88, 0.44 and 0.68 mol CO2/mol amine at 313 K temperature and 15 kPa CO2 partial pressure), and cyclic capacity (0.52, 0.26 and 0.40 at 313-353 K temperature range, 15 kPa CO2 partial pressure). These amines also had fast CO2 absorption rate (0.082, 0.111 and 0.142 mol CO2/min) and CO2 regeneration rate (0.512, 0.452 and 0.295 mol CO2/min) while maintaining low heat of CO2 absorption (-34.17, -56.21 and -69.79 kJ/mol CO2) and heat input of CO2 regeneration (39.73, 60.48 and 72.44 kJ/mol CO2). Based on these results, DMAB, HEMAB, and HEEAB can be considered to be promising amine components for blending for a post combustion CO2 capture process.

AB - This work focused on the synthesis of new tertiary amines by varying the alkyl chain length with/without hydroxyl group in the structure. The effect of chemical structure of newly synthesized tertiary amines; 4-(dimethylamino)-2-butanol (DMAB), 4-(dipropylamino)-2-butanol (DPAB), 4-(dibutylamino)-2-butanol (DBAB), 4-((2-hydroxyethyl)(methyl)amino)-2-butanol (HEMAB) and 4-((2-hydroxyethyl)(ethyl)amino)-2-butanol (HEEAB) were evaluated based on CO2 equilibrium solubility and cyclic capacity, as well as rates and heats of CO2 absorption and regeneration. The results showed that three amines (i.e. DMAB, HEMAB and HEEAB) had the highest CO2 absorption capacity (0.88, 0.44 and 0.68 mol CO2/mol amine at 313 K temperature and 15 kPa CO2 partial pressure), and cyclic capacity (0.52, 0.26 and 0.40 at 313-353 K temperature range, 15 kPa CO2 partial pressure). These amines also had fast CO2 absorption rate (0.082, 0.111 and 0.142 mol CO2/min) and CO2 regeneration rate (0.512, 0.452 and 0.295 mol CO2/min) while maintaining low heat of CO2 absorption (-34.17, -56.21 and -69.79 kJ/mol CO2) and heat input of CO2 regeneration (39.73, 60.48 and 72.44 kJ/mol CO2). Based on these results, DMAB, HEMAB, and HEEAB can be considered to be promising amine components for blending for a post combustion CO2 capture process.

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KW - CO absorption rate

KW - CO regeneration rate

KW - Cyclic capacity

KW - Equilibrium solubility

KW - Heat input of CO regeneration

KW - Heat of CO absorption

KW - Tertiary amines

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