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In this work the applicability of activity based kinetics for the absorption of CO2 into hydroxide and carbonate solutions is discussed. It was found by several authors that reaction rate constants based on concentration strongly depend both on concentration and the counter ion present in solution. In this study experimental kinetics data for LiOH, NaOH and KOH from the literature were reevaluated...
Kinetics for CO 2 absorption into 5–30wt-% sodium carbonate solutions and 5–50wt-% potassium carbonate solutions up to 70°C were studied in a string of discs apparatus under conditions, in which the reaction of CO 2 could be assumed pseudo-first-order. The experimental data were evaluated based on the use of activities in the reaction rate expressions. The second order kinetic constant...
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