Bubble Point Determination for CO₂ + Ethanol + Alkanolamines (Monoethanolamine, Diethanolamine, or Triethanolamine) at High Pressures

Abstract

Experimental data from the phase transition of the ternary systems {CO 2 (1) + [0.25 monoethanolamine(2) + 0.75 ethanol(3)]}, {CO 2 (1) + [0.25 diethanolamine(2) + 0.75 ethanol(3)]} and {CO 2 (1)+ [0.25 triethanolamine(2) + 0.75 ethanol(3)]} is reported. A variable volume cell was employed using the static synthetic method in a temperature range of (313−343) K, pressures up to 14 MPa and CO 2 mole fractions between 0.05 and 0.35. For xCO 2 > 0.35 phase transition data could not be measured for pressures up to 35 MPa. Vapor− liquid transitions (VLE) of bubble point (BP) are determined for the three ternary systems studied. The determination of measures of the phase equilibrium of systems involving CO 2 and alkanolamines are of great importance in the development of absorption processes. A great feature of alkanolamines is the possibility of capturing carbon dioxide (CO 2 ) and promoting separation of this gas from other gas streams.

Vapor–Liquid Equilibrium Measurements for Carbon Dioxide + Cyclohexene + Squalane at High Pressures Using a Synthetic Method

“…The experiment occurs at nine different temperatures between 305.08 and 383.49 K and at pressures from 5.58 up to 13.47 MPa. This experimental apparatus was already used in previous work …”

“…Phase equilibrium experiments were carried out in a high-pressure variable-volume view cell. The experimental apparatus used in this work is similar to the one used in previous investigations. − A schematic diagram of the experimental apparatus is shown in Figure . To illustrate the designed experimental setup, Figure is presented.…”

Experimental Measurements of the {CO2 (1) + Acetone (2) + Ivermectin (3)} System at High Pressure

“…The experiments were conducted via the visual static synthesis method at high pressure with the use of a variable-volume cell in the experimental apparatus (see Figure ). This apparatus has been used in previous works for the study of phase equilibria. ,− …”

An Experimental and Theoretical Study on the Unexpected Catalytic Activity of Triethanolamine for the Carboxylative Cyclization of Propargylic Amines with CO2

“…[32][33][34] As earlya s1 931, alkanolamines were utilized to capture carbon dioxide from natural gas. [32][33][34] As earlya s1 931, alkanolamines were utilized to capture carbon dioxide from natural gas.…”

“…As ac lass of low-costa nd biodegradable bases,a lkanolamines have been used in aw idev arietyo fi ndustrially important processes such as natural gas stripping, adhesives, acid neutralization, paint stripping, surfactants, and derivatives in drug formulations. [32][33][34] As earlya s1 931, alkanolamines were utilized to capture carbon dioxide from natural gas. [35] This gave us inspiration:m aybe alkanolamines can strongly activate CO 2 in the CO 2 conversion process.…”