Solubility of carbon dioxide in aqueous solution of potassium sarcosine from 353 to 393K

The equilibrium solubility of CO2 in the aqueous solution of 5m' potassium salt of sarcosine (KSar) was measured over a temperature range of 353 - 393K with CO2 partial pressures ranging from 0.003 - 41.9 kPa and CO2 loadings from 0.022 - 0.538. Two vapor-liquid-solid equilibrium (VLSE) apparatuses, LabMax and the rocking equilibrium unit, were used. The obtained VLSE data complement the previous ones, so that the CO2 solubility in the 5m' KSar solution is well represented. The VLSE data are also used to determine the solvent cyclic capacity and the heat of absorption. (C) 2013 Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).