Abstract

Solubility and diffusivity of N2O and CO2 in water were determined as a function of temperature from the results published in the open literature, and new data were measured in the present work. The solubility of N2O in several aqueous alkanolamine (DEA, DIPA, DMMEA, and DIPA) solutions at various temperatures was measured and correlated over a wide range of conditions. For both the diffusivity of N2O and the alkanolamine in aqueous alkanolamine solutions a modified Stokes-Einstein relation was derived. With the aid also of the “N2O analogy” the diffusivity of CO2 in these solutions can be estimated.

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