Examines gas absorption kinetics with various amine absorbents, highlighting a new screening method.
-methyldiethanolamine (MDEA) were investigated as representative primary, secondary, and tertiary alkanolamine absorbents. Kinetic analysis revealed that primary and secondary amines follow similar reaction pathways but exhibit different reaction rates, whereas tertiary amines proceed via a distinct mechanism and show a stronger dependence of the absorption rate on the absorbent concentration, characterized by distinct reaction orders and rate constants. This work established reflection-based optical imaging as a low-cost, versatile platform for high-throughput screening of gas-liquid absorption kinetics and for guiding data-driven absorbent discovery.
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Han et al. (2026) studied this question.
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