The application of amine-based materials for carbon capture and utilisation: an overarching view

Abstract

An account of the fundamental chemical and engineering principles of solid amine-based CO2 adsorbents and their industrial application, with discussion of the relevance of amine chemistry in CO2 utilisation technology.

Effect of Spatial Heterogeneity on the Unusual Uptake Behavior of Multivariate-Metal–Organic Frameworks

“…As shown in Figure a, UiO-66-B, which was entirely composed of NH 2 -functional groups, showed higher total uptake than UiO-66-A. The result is due to the strong interaction between the NH 2 -groups and CO 2 and is similar to the results of previous studies. − In the case of mix-UiO-66-AB, the total uptake was intermediate to those of UiO-66-A and UiO-66-B. Although MTV-UiO-66-AB contained a similar amount of NH 2 -groups as mix-UiO-66-AB, its uptake behavior was similar to that of UiO-66-B.…”

Comparative analysis and impact assessment on the electricity price of traditional carbon capture methods and that of direct precipitation of CO2 with the addition of Ca(OH)2 in the scope of a case study in Shenzhen.

“…Depending on the fuel input, the penalty can either be an increase in fuel consumption or a loss of output (House et al, 2009). The traditional method of amine solution regeneration has an energy penalty of 40% and Wu 7 consumes around 70% of the total energy used for the whole carbon capture process (Hamdy et al, 2021) (Rao & Rubin, 2002). Researchers discovered that most amine solutions are regenerated best under the temperature of 120 °C, while the operation and capital cost for the heat regenerating (thermal regeneration) of these amine solutions can be enormous (Kang, 2018).…”

“…Single process precipitation presents its promising aspect: Murnandari et al (2016) prove its efficiency by determining the CO 2 absorption rate under the introduction of various amine absorbents, including monoethanolamine (MEA), diethanolamine (DEA), N-methyldiethanolamine (MDEA), and 2-amino-2-methyl-1-propanol (AMP). The main function of amine solution in the process of carbon capture is to carry the CO 2 and avoid CO 2 escaping into the atmosphere as much as possible (Hamdy, 2021). These trials evaluating different amine test which adsorbent is the most effective in regeneration.…”

Carbon Capture Beyond Amines: CO2Sorption at Nucleophilic Oxygen Sites in Materials

“…[30][31][32][33][34][35] Amines are also toxic and corrosive, necessitating their dilution in large volumes of water or organic solvents. [30,36] Although some of these challenges can be mitigated by impregnating amines into solid supports, including carbons, zeolites, silicas, metal-organic frameworks (MOFs), and polymers, [37][38][39][40][41][42][43] many amine-functionalized materials still suffer from high desorption temperatures, amine volatilization, and/or oxidative degradation over time. [43][44][45][46][47][48][49][50][51][52][53][54] Therefore, new technologies are needed to leverage the advantages of reactivity-based separations for carbon capture while overcoming the common limitations of amine-based sorbents.…”

“…[22,29,40,43,55, It should be noted that the use of solid sorbents does introduce other challenges, such as poor heat transfer due to the modest thermal conductivity of most solids. [29] In contrast to the wide study of amine-functionalized solids for carbon capture, [37][38][39][40][41][42][43] alkoxide-and OH À -functionalized materials remain relatively understudied. This may be due in part to the poor stability of many solid supports, including MOFs and silicas, towards aqueous OH À .…”