Solubility of carbon dioxide in aqueous solutions of 2-amino-2-hydroxymethyl-1,3-propanediol

Physical Properties and Thermal Decomposition of Aqueous Solutions of 2-Amino-2-hydroxymethyl-1, 3-propanediol (AHPD)

“…The results of thermal decomposition of all the samples are presented in Table 6 in terms of T start (start temperature for decomposition), T onset (intersection of baseline weight and tangent of weight versus temperature curve), and T f (final decomposition [15][16][17]. Figure 5a-f shows the decomposition of pure and various AHPD mass fractions (1,7,13,19, and 25) mass%, respectively. Aqueous solutions of AHPD show lower T start values as compared to pure AHPD.…”

“…Recently, sterically hindered amines are proposed as potential solvents for acid gas removal due to their unique cyclic structure and high CO 2 loading [2][3][4][5][6]. The investigated solvent in this paper, 2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) is also a sterically hindered amine [6,7]. The solubility data and kinetic studies show that AHPD is a good potential solvent for acid gas removal from industrial streams of interest [8][9][10][11].…”

“…A literature review of physical properties of AHPD shows that the available open literature is scarce and limited in temperatures and compositions. Tournex et al [7] studied the viscosities, densities, and Henry's law constants for N 2 O for AHPD mass fractions of 0.0015, 0.005, 0.01, and 0.025 over the temperature range of 303.15 K to 343.15 K. Park et al [8] measured densities and viscosities at AHPD mass fractions of (5, 10, 15, 20, and 25) mass%. Paul et al [12] studied the density, viscosity, and thermal diffusivity of N 2 O and CO 2 in aqueous solutions of AHPD mass fractions of (2.17 to 21.7) %.…”

“…In the present work, the density, viscosity, surface tension, refractive index, and thermal stability of aqueous solutions of AHPD are reported. The physical properties of aqueous solutions of AHPD were investigated over the mass fraction range of (1,7,13,19, and 25) mass% and at temperatures ranging from (298.15 to 333.15) K. All the experimentally measured physical properties were correlated as a function of temperature. The thermal stability of aqueous solutions was also investigated using a thermo-gravimetric analyzer (TGA) at a heating rate of 10 K · min −1 under a nitrogen atmosphere at a flow rate of 20 mL · min −1 2 Experimental…”

Equilibrium solubility of carbon dioxide in (2-amino-2-methyl-1-propanol+piperazine+water)

“…The Kent and Eisenberg model [31] has been used to represent the solubility of acid gases in aqueous alkanolamine systems [32][33][34][35][36]. In this work, the literature values of ionization constants and Henry's law constants were used in the model.…”