TY - JOUR
T1 - Novel models for correlation of Solubility constant and diffusivity of N2O in aqueous 1-dimethylamino-2-propanol
AU - Liu, Helei
AU - Idem, Raphael
AU - Tontiwachwuthikul, Paitoon
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/8/10
Y1 - 2019/8/10
N2 - The solubility constant of N2O in aqueous 1-dimethylamino-2-propanol (1DMA2P) solution in the concentration range of 0–3.0 mol/L was measured over the temperature range of 298–333 K, and the data used to fit existing models: Redlich-Kister, semi-empirical, and polynomial. A new model has also been developed to predict the solubility constant. Also, N2O diffusivity in aqueous 1DMA2P solution was measured over the concentration range of 0.5–2.0 mol/L and temperature range of 298–313 K. All models used fitted the solubility constant of N2O solubility in 1DMA2P solution data with absolute average deviations (ADDs) for the Redlich-Kister, semi-empirical, polynomial models and a new model of 12.2%, 8.1%, 0.2% and 2.2%, respectively. The data for N2O diffusivity in aqueous 1DMA2P solution were represented by the modified Stokes-Einstein and semi-empirical models (AADs of 2.3% and 13.6%, respectively). A new mechanism-based model was equally developed to better correlate experimental results and understand the process of diffusivity.
AB - The solubility constant of N2O in aqueous 1-dimethylamino-2-propanol (1DMA2P) solution in the concentration range of 0–3.0 mol/L was measured over the temperature range of 298–333 K, and the data used to fit existing models: Redlich-Kister, semi-empirical, and polynomial. A new model has also been developed to predict the solubility constant. Also, N2O diffusivity in aqueous 1DMA2P solution was measured over the concentration range of 0.5–2.0 mol/L and temperature range of 298–313 K. All models used fitted the solubility constant of N2O solubility in 1DMA2P solution data with absolute average deviations (ADDs) for the Redlich-Kister, semi-empirical, polynomial models and a new model of 12.2%, 8.1%, 0.2% and 2.2%, respectively. The data for N2O diffusivity in aqueous 1DMA2P solution were represented by the modified Stokes-Einstein and semi-empirical models (AADs of 2.3% and 13.6%, respectively). A new mechanism-based model was equally developed to better correlate experimental results and understand the process of diffusivity.
KW - 1DMA2P
KW - Diffusivity
KW - Novel model
KW - Proposed mechanism
KW - Solubility constant
UR - http://www.scopus.com/inward/record.url?scp=85063659473&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2019.03.073
DO - 10.1016/j.ces.2019.03.073
M3 - Article
AN - SCOPUS:85063659473
SN - 0009-2509
VL - 203
SP - 86
EP - 103
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -