화학공학소재연구정보센터
Korean Journal of Chemical Engineering, Vol.39, No.8, 1975-1980, August, 2022
Sustainable building materials employing solid diamines as CO2 sorbents
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The storage of large quantities of CO2 in a chemically-bonded framework is a key factor in establishing an energy efficient and environmentally sound society. The solvent scrubbing process provides an economically feasible way to capture CO2 industrially. However, it suffers from inherent problems such as corrosion/leakage problems, difficulty with the regeneration process, and potential environmental issues. In this regard, the solid adsorbent is deemed as a next-generation carbon-capture platform. However, most reported materials involve complex and expensive synthesis processes, hampering their practical use in the field. Inspired by the concept of solid-supported amines and by the reversible sorption of CO2 in amine solutions, in this paper, we assess the CO2 sorption performance of raw diamine solid molecule of p-phenylenediamine (pPD), which could be coupled with construction materials to meet the design construction standards for sustainable buildings. CO2 sorption induced structural transformation of pPD and morphology- change induced enhancement of CO2 sorption kinetics are presented.
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