Many new technologies have been developed to capture CO2 from stationary point sources such as power plants and large industrial operations. Currently, aqueous amine solvents are the incumbent technology for CO2 removal in low-pressure gas systems. A substantial amount of research has gone into improving solvent technology. One approach has been the development of non-aqueous capture solvents which can overcome the heat penalty associated with heating water. The major hurdle for implementing non-aqueous amine solvent is the increase in viscosity upon CO2 uptake. This viscosity increase is attributed to long-range molecular interactions such as ionic interactions and hydrogen bonding.<br/>Our team uses an approach called “hydrogen bonding segmentation” by introducing hydrogen bond acceptors as additives which break the long-range orders into smaller segments and thus decrease the viscosity of non-aqueous amine solvent. Here, we will share our experimental and computational approach to accelerate the development of these additives. We will present our recent progress and findings on how to mitigate the increase in viscosity.

Universal solvent viscosity reduction via hydrogen bonding disruptors

2019 Spring National Meeting

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