Chemical reaction model (CRM) and Langmuir-Hinshelwood (L-H) model for K2CO3 carbonation

https://doi.org/10.1016/j.ccst.2021.100011

“Jayakumar et al. proposed a simple chemical reaction model (CRM) and Langmuir-Hinshelwood (L-H) model to validate the carbonation kinetic mechanisms of pure K₂CO₃ (Jayakumar et al., 2017). The two models were proposed under the considerations of the parallel carbonation-hydration reactions and CO₂-H₂O co-adsorption on pure K₂CO₃. CRM with negative apparent activation energy failed to reflect the carbonation kinetic mechanisms. In contrast, the results predicted by the L-H model indicated that the rate-limiting H₂O and CO₂ adsorption steps should be considered in the modeling the carbonation and hydration kinetics (Jayakumar et al., 2017). Suggestions were made to choose suitable supports to enhance the CO₂ sorption capacity and carbonation kinetics of K₂CO₃.”