Inverted Microdroplets (Microbubbles) Induced Interfacial Water Protonation to Promote Alkaline Release of Amine and Reduce Energy in CCS

作者：Yuewei Fan, Lu Chen, Haoyu Meng, Feng Zhang, Lei Li, Zhibing Zhang, Yi Chen · 发表于：Journal of the American Chemical Society · 年份：2025 · DOI：10.1021/jacs.5c02240 · 被引用次数：6 · 研究领域：Surface Modification and Superhydrophobicity、Carbon Dioxide Capture Technologies、Membrane Separation Technologies

This study engineered a superacidic interface with a pronounced polar electric field within the amine-water system by inducing hydrogen bond charge transfer in interfacial water via inverted microdroplets (microbubbles), thereby stabilizing protons within the interfacial water layer. This mechanism enabled the continuous alkaline release of hindered amines (AMP-MIS), enhancing CO 2 absorption load capacity and reducing regeneration energy consumption. Nuclear magnetic resonance and potentiometric titration elucidated the product distribution, while Raman spectroscopy, pH analysis, and conductivity measurements confirmed proton stabilization. Theoretical calculations provided insights into the reaction mechanism. Pilot-scale testing revealed the AMP-MIS system achieved a 74.2% increase in CO 2 cyclic load capacity, surpassing the conventional 30 wt % MEA system, with regeneration energy reduced from 3.667 GJ/t CO 2 to 1.885 GJ/t CO 2 . This innovative strategy offers valuable guidance for advancing amine-based decarbonization technologies and reducing carbon emissions in the power industry, representing a pivotal step toward carbon neutrality.