Low transition temperature mixtures (LTTMs) for CO2 capture: suitable alternatives to ionic liquids (ILs)?
Year: 2012
Type: article
Abstract: for the 3rd Asian-Pacific Conference on Ionic Liquids and Green Processes September 17-19, 2012 • Beijing • China. Low Transition Temperature Mixtures (LTTMs) for CO2 capture: suitable alternative to Ionic Liquids (ILs)? Maria Francisco a,b *, Lawien Zubeir , Adriaan van den Bruinhorst , Cor J. Peters , Maaike C. Kroon . a Eindhoven University of Technology, Eindhoven, Netherlands, 5612 AZ b Delft University of Technology, Delft, Netherlands, 2628 CA c The Petroleum Institute, Abu Dhabi, U.A.E. *Corresponding author: [email protected] Recently, new approaches were taken towards the use of green solvents. Some examples are the substitution of organic solvents for supercritical fluids,“bio-solvents“ or low-vapor-pressure liquids. Among these possibilities, ionic liquds (Ils) attracted particular attention over the past years. One of their main advantages is that they can be designed by choosing the cation-anion combination to pursuit the best performance as solvents for a certain purpose [1] . The so-called “Task Specific Ionic Liquids” [2] provide more suitable physicochemical properties or high degree of control of the solubility of gases in the solvent media. Together with their extremely low volatility, the juidicious selection of the constituents contributes to their “green” performance . However, their “green” character is sometimes questioned. The high viscosity, production and purification cost make ILs technology in most of the cases not competitive compared with traditional solvents. More recently, deep eutectic solvents formed by combination of a quaternary salt and a hydrogen-bond donor showed IL analogue solvent characteristics, with promising advantages. Some of them are low cost preparation, no need of purification, no water incompatibility, tunable phase behavior and solubility, low toxicity and biodegradability [3] . A new family of low transition temperature mixtures (LTTMs) formed by natural molecules keeping the functionalities of some task specific and natural ionic liquids [4] is explored in this work, evaluating their suitablility as solvents for CO2 capture.
Source: TU/e Research Portal
Institution: Eindhoven University of Technology
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W841852088