A review of CO2 capture for amine-based deep eutectic solvents

Abstract

Carbon Dioxide can be naturally produced and make up of 0.04 percent in the earth’s atmosphere. However,<br/>centuries by centuries follows by the modernization of humans, it has escalated to the state of causing inimical<br/>impacts towards the human and environment. Additionally, one of the most important fuel sources in the world,<br/>natural gas, in its raw state contains high levels of CO2 that must be removed to avoid issue such heating value<br/>reduction and pipeline corrosion concurrently reduces the effect towards environment. To tackle this issue, the<br/>development of CO2 absorbent capable of absorbing large amount of CO2 hence reducing the effects it has to<br/>wards the environment has become a topic among researchers this past decades. Conventionally, the use of<br/>amine such as alkanolamine have been implemented to capture CO2, yet it flaws outclass its uses such as limited<br/>ability to take up CO2 and high corrosivity. Following this, ionic liquids (ILs), a new species of solvent, came to be<br/>in the limelight since they are tunable according to their function, including carbon capture. Nonetheless, in<br/>recent years, a newly discovered green solvent, deep eutectic solvent (DES) stole the limelight. This absorbent<br/>was claimed to retain all the advantages and desirable properties of ionic liquids while eliminating some of their<br/>greatest limitations. In this review, we examined the potential for carbon capture using multiple amine-based<br/>deep eutectic solvents and explored the role of including a third compartment as a performance enhancement<br/>mechanism. Last but not least, we are anticipating the publication of future species of amine-based deep eutectic<br/>solvents, which will include more information that had previously been considered scarce, such as its level of<br/>toxicity, its economic validation, and the evidence of melting point reduction.

Topics & Concepts