CO₂ Capture with Physical Solvent Dimethyl Carbonate at High Pressures

Abstract

The constant-volume method is used to determine the solubility of CO 2 in dimethyl carbonate (DMC) under the pressure of 6 MPa and the temperature variations from (280.7 to 327.66) K in this paper. It is found by contrast that DMC has greater ability to dissolve CO 2 than propylene carbonate and methanol at the same temperature. Furthermore, the solubility of CO 2 in DMC at room temperature 298.47 K is close to that of methanol at 263.15 K. Therefore, DMC is expected to become an effective and low-cost absorbent for precombustion CO 2 capture.

Low pressure carbon dioxide solubility in pure electrolyte solvents for lithium-ion batteries as a function of temperature. Measurement and prediction

“…These reported CO 2 solubility data can be also compared with those reported in the literature by our group previously [18] as well as by others [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. From table 4 and figure 4, it can be seen that the values of CO 2 solubility in PC are in excellent agreement with published data by Blanchard et al [18].…”

“…From this figure, it [53]. This result confirms the hypothesis to use these solvents for the CO 2 -capture, as already claimed by different research groups [23,30]. Furthermore, COSMOThermX calculations were performed to evaluate the effect additives such as LiPF 6 drive other studies based on the evaluation of the gas solubility in binary mixtures containing an ionic liquid mixed with a pure-electrolyte solvent, but not only focused on Li-ion battery applications.…”

“…An experimental procedure based on chemical titration methodology has been used during this work. These selections of solvents and experimental techniques were chosen first to confirm previous data published by our group [18], and to evaluate these data with those already published by other groups [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Secondly, an attempt was made to estimate from the solubility data as a function of temperature the Henry's law constants and dissolution properties like the Gibbs energy, the standard enthalpy and entropy of dissolution, as well as the mixing enthalpy of the solvent with CO 2 in its hypothetical liquid state.…”

“…Thirdly, we have tried to cover different families of solvents that could best illustrate solvent effects on the CO 2 solubility like the size of the molecule (DMC versus EMC versus DEC) or its basic structure (linear versus cyclic), which can drive different dissolution pathways. Furthermore, based on their relatively low vapour pressure and their cost, these solvents are sometimes referred to as a ''green adsorbents'' for CO 2 capture which present high CO 2 solubility in comparison with molecular solvents, like water or alcohols [23,30,34]. In order to analyse their CO 2 capture capability in greater detail, a comparison has been realised between CO 2 solubility data presented herein with those reported for another family of designer solvents like ionic liquids [35].…”

Experimental investigation of miscibility conditions of dead and live asphaltenic crude oil–CO2 systems

“…CO 2 injection method has been suggested for processes of enhanced oil recovery and CO 2 sequestration (Aycaguer et al 2001;Kokal et al 1992;Mathiassen 2003;Sarma 2003). In addition, CO 2 injection process is more attracted due to the reduction of greenhouses gas emissions (Aycaguer et al 2001;Gui et al 2010;Rao and Rubin 2002). The CO 2 flooding process, depending on the highest possible operating pressure and minimum miscible conditions, can be performed at both miscibility and immiscibility conditions (Wang and Gu 2011).…”