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March 12, 2026The Canadian Journal of Chemical Engineering

Study of novel hindered amine/polyamine blends for improved carbon dioxide capture

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Authors

NMNadir MazroyInstitute of Chemical TechnologyPVPrakash D. VaidyaInstitute of Chemical Technology

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Overview

Investigates CO2 absorption efficiency in polyamine-promoted blends, suggesting improved solubility and desorption performance.

Key Points

  • The aim is to evaluate the efficiency of hindered amine and polyamine blends for CO2 capture and regeneration.
  • Investigated CO2 absorption using AHPD blended with TETA and TEPA.
  • Employed a stirred cell reactor to study absorption kinetics at temperatures ranging from 308 to 318 K.
  • Conducted vapour-liquid equilibrium studies to determine CO2 solubility at different partial pressures.
  • Evaluated desorption performance of blends at 358 K in comparison with conventional MEA.
  • The overall rate constants were 6520 s⁻¹ (AHPD/TETA) and 8852 s⁻¹ (AHPD/TEPA).
  • Second-order rate constants were significantly higher for TETA and TEPA compared to MEA.
  • CO2 loading capacities were higher in blends: 0.68 mol/mol (AHPD/TETA) and 0.76 mol/mol (AHPD/TEPA).
  • Desorption efficiency of AHPD/TETA (55%) and AHPD/TEPA (57%) outperformed MEA (40%).

Cite This Study

Mazroy et al. (2026) studied this question.

synapsesocial.com/papers/69b25be596eeacc4fceca442https://doi.org/10.1002/cjce.70337
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