Chemical absorption is based on the reaction between CO2 and specific compounds—solvents—that lead to form a weak bond between CO2 and the solvent. Chemical absorption occurs indeed at low CO2 partial pressure. Low-temperature is also recommended for this mechanism. A carbon dioxide capture process using regenerable sorbents such as an alkali metal oxide or an alkali metal carbonate has been reported. ... Potassium carbonate rapidly reacts with amine-associated carbamate and water to form less-soluble potassium bicarbonate that precipitates from solution. CO2 Removal from Syngas Using Piperazine‐Activated MDEA and Potassium Dimethyl Glycinate.