Volumetric properties of the isopropanolamine–water mixture at atmospheric pressure from 283.15 to 353.15K

A method for computing the partial derivatives of experimental data

“…The resulting partial molar volume surfaces are shown in Figure 8a. They exhibit a local minimum or maximum in the neighborhood of x w ¼ 0.8 for some T. These are in agreement with the restricted partial molar volumes reported by Mokaroui et al 6 and of Yeow et al 8 In their computation, these authors treated the specific volume data at each measurement temperature as a function of single independent variable, i.e., v ¼ f(x W ) and obtained the ordinary derivative dv/dx W from fitted expression 6 and from Tikhonov regularization computation, 8 respectively. They then used the ordinary derivative to compute the partial molar volumes at each of the measurement temperatures.…”

“…The continuous curves are the results from Eq. 7, the lighter broken curves are from Yeow et al 8 and the discrete points are from Mokaroui et al 6 The agreement among these results is indicative of the reliability of the partial derivatives in Figure 7b.…”

“…Mokraoui et al 6 measured the density of aqueous monoisopropanolamine (MIPA) solutions with different mole fraction x W of water. They reported the density data for a series of constant temperature T between 273.15 K and 353.15 K. Their raw data have been converted into specific volume v and shown in Figure 7a as a function of the two independent variables T and x W , i.e., v ¼ f(T, x W ).…”

Density measurements and modelling of loaded and unloaded aqueous solutions of MDEA (N-methyldiethanolamine), DMEA (N,N-dimethylethanolamine), DEEA (diethylethanolamine) and MAPA (N-methyl-1,3-diaminopropane)

“…In order to design absorption and desorption towers several properties of 25 the chemical system must be accurately calculated using models based on experimental 26 data. The most important experimental data are CO 2 solubility, kinetic constants and 27 physical properties such as density and viscosity (Mokraoui et al, 2006). 28…”

Investigating the Properties of Aqueous Monoisopropanolamine Using Density Data from 283.15K to 353.15K

“…It is also an important constituent, serving variously as a stabilizer, emulsifier, and pH control agent, in the formulation of a large number of industrial, household, pharmaceutical, and cosmetic products. Apart from their practical importance, the thermodynamic and transport properties of the MIPA-water system are also of fundamental interest to physical chemists and consequently these have been reported by a number of investigators [2][3][4][5][6].…”