Surface thermodynamics and viscosity of 1-dimethylamino-2-propanol + 1-(2-aminoethyl)piperazine and 1-dimethylamino-2-propanol + 1,5-diamino-2-methylpentane aqueous solutions

Surface Thermodynamics, Viscosity, Activation Energy of N-Methyldiethanolamine Aqueous Solutions Promoted by Tetramethylammonium Arginate

“…Of these, the Weiland equation [ 44 ], which is a semi-empirical equation, can describe the dependence of solute composition and temperature on viscosity simultaneously. Thus, it is used for the correlation of viscosity data in this study [ 33 , 45 ]. For MDEA-[N 1111 ][Arg] aqueous solutions, it can be expressed as: where η mix represents the viscosity of MDEA-[N 1111 ][Arg] solution, and η 1 and η 2 are expressed as: where η water represents the viscosity of pure water, w = w MDEA + w [N 1111][Arg] , a i , b i , c i , d i are adjustable parameters.…”

“…Of these, the Weiland equation [44], which is a semi-empirical equation, can describe the dependence of solute composition and temperature on viscosity simultaneously. Thus, it is used for the correlation of viscosity data in this study [33,45]. For MDEA-[N 1111 ][Arg] aqueous solutions, it can be expressed as:…”

Surface Tension of N-Methyldiethanolamine in Methanol or in Methanol Aqueous Solutions as a Solvent at Temperatures from 293.15 to 323.15 K

“…Finally, surface thermodynamic properties, such as surface entropy and enthalpy, were calculated from the temperature dependence of the mixture′s surface tension at a constant concentration, using and where σ m is the surface tension of the mixture, S S is the surface entropy per unit surface area due to the formation of the interface, H S is the surface enthalpy, i.e., the sum of the surface free energy required to extend the surface and the latent heat required to maintain isothermal conditions . These equations are widely used to calculate the surface thermodynamics properties of binary mixtures, aqueous , or nonaqueous, , and more recently of ternary mixtures. , …”

“…46 These equations are widely used to calculate the surface thermodynamics properties of binary mixtures, aqueous 35,47 or nonaqueous, 46,48 and more recently of ternary mixtures. 49,50 Since surface tension varies linearly with temperature (eq 1), for a solution of constant composition, the values of K 1 and K 2 in eq 1 correspond to H S and S S , respectively. Therefore, in Tables 4 and 5, the K 1 values also represent the surface enthalpy, expressed in mJ•m −2 •K −1 , while the K 2 values represent the surface entropy, in mJ•m −2 .…”

Characteristics and Kinetics Study of Mercury Re-emission Inhibited by DTCR in Simulated Desulfurization Slurry

“…Coal combustion is identified as the main anthropogenic source of Hg emission to the global environment, which accounts for less than one-half of the total Hg emission from the global anthropogenic source. − In 2013, the Minamata Convention on Mercury, which related to controlling the global mercury pollution problems, was adopted by the United Nations Environment Programme (UNEP), and more than 100 countries signed this convention . In fact, coal plays an important role in current industrial production, especially in the thermal power production industry. , As the major coal consumption industry, it is an urgent task for coal-fired power plants to control mercury emissions.…”