Grand Challenges in CO2 Capture and Conversion

Abstract

IntroductionSince the era of industrialization, the amount of carbon dioxide (CO2) emissions has increased and has gradually aggravated climate change (Burkart et al., 2019;Gao et al., 2020). Most CO2 emissions come from the combustion of fossil fuels and can therefore be reduced through the gradual elimination of fossil fuels. However, although fuel eliminations might be possible for the power industry and transportation sector (through substitution with renewable energies), many sectors (e.g., steel/cement production, intercontinental air transport or non-electrical trains) do not have a suitable alternative for carbonbased fuels (Figure 1). Therefore, to achieve net zero greenhouse gas (GHG) emissions, in addition to emission reduction, CO2 capture, and utilization are required in the long term (Castel et al., 2021;Sharifian et al., 2021). www.resrecov.com HIGHLIGHTS ➢ CO2 as a major challenge in climate change. ➢ CO2 capture and conversion into value-added products.➢ Energy, costs, effective catalysts, and carbon footprint as four main challenging issues.

Ionic Liquids Hybridization for Carbon Dioxide Capture: A Review

“…Furthermore, the degradation of amines through oxidation or thermal processes resulted in the formation of chemical compounds that exhibits low absorption capacity such as organic acids, amides, dimers and trimers [6]. Besides that, aqueous amines consume high energy during the regeneration process due to the strong interaction between CO 2 and the sorbent [7,8]. For instance, in the case of MEA regeneration, the physical treatment was conducted at 160 • C to desorb CO 2 .…”