Physicochemical Properties of Aqueous Solutions of 2-Amino-2-hydroxymethyl-1,3-propanediol

Abstract

The density and viscosity of aqueous solutions of 2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) as well as the Henry's law constants and diffusivity of N 2 O in these solutions were measured over the temperature range from (298 to 323) K at atmospheric pressure. The mass fractions of AHPD used were (2.17 to 21.7) %. The "N 2 O analogy" was used to estimate the Henry's law constants and diffusivity of CO 2 in aqueous AHPD solutions. The experimental density, viscosity, Henry's law constants, and diffusivity data are correlated as a function of temperature and concentration of amine and compared with the available data in the literature.

Kinetics of absorption of carbon dioxide into aqueous potassium salt of proline

“…The values of D CO 2 -Water were taken from literature (Paul et al, 2009). The diffusion coefficients of KPr in water were obtained from the work reported by Hamborg et al (2008).…”

Acceleration of the reaction of carbon dioxide into aqueous 2-amino-2-hydroxymethyl-1,3-propanediol solutions by piperazine addition

“…(19) to (22), and are given in Table 4. The diffusion coefficient of CO 2 in aqueous PZ-AHPD solutions, (D CO 2 ) Amines was estimated using the (D 1/2 CO 2 /H CO 2 ) Amines ratio obtained in this work and the values of (H CO 2 ) AHPD taken from Paul et al (2009). The diffusion Table 4 Parameters for pseudo-first order regime verification of PZ-AHPD-H2O systems.…”

Kinetics of absorption of carbon dioxide into aqueous solutions of 2-amino-2-hydroxymethyl-1,3-propanediol

“…The diffusivity and physical solubility of CO 2 were required to calculate the reaction rate constants and enhancement factors. The density and viscosity of (AHPD + H 2 O) and the physical solubility and diffusivity of CO 2 into (AHPD + H 2 O) are available in our recent publication [32]. The diffusivities of AHPD into (AHPD + H 2 O) were calculated by the following equation:…”