Title

Thermal Degradation Comparison of Amino Acid Salts, Alkanolamines and Diamines in CO2 Capture

Authors

Quanzhen Huang, Eastern Kentucky Uni
Jesse Thompson, University of Kentucky
Levi M. Lampea, University of Kentucky
John P. Selegue, University of Kentucky
Kunlei Liu, University of Kentucky

Department

Chemistry

Document Type

Article

Publication Date

2014

Abstract

In the selection of candidates for post-combustion CO₂ absorption, solvent degradation has become a general concern due to the significant impact on operational cost and the intention to use thermal compression from high temperature stripping to minimize the overall process energy. In this research, structural analogs of amino acid salts, alkanolamines and diamines were thermally degraded in order to explore their thermal stability from a structural standpoint. Functional groups, amine orders and steric effect were investigated for their impact on amine thermal degradation. Primary amines with chain structures showed a thermal stability trend as diamine > alkanolamine > amino acid salt. For alknolamine and diamine structural isomers, the primary amines are more stable than the secondary amines. Steric hindrance around the amine group was shown to play a positive role in protecting amines against thermal degradation.

Journal Title

Energy Procedia

Recommended Citation

Huang, Q., Thompson, J., Lampe, L. M., Selegue, J. P., & Liu, K. (2014). Thermal Degradation Comparison of Amino Acid Salts, Alkanolamines and Diamines in CO2 Capture. Energy Procedia, 63, 1882-1889. doi:10.1016/j.egypro.2014.11.197