CO2 Capture via Crystalline Hydrogen-Bonded Bicarbonate Dimers
作者:Neil J. Williams、Charles A. Seipp、Flavien M. Brethomé、Ying-Zhong Ma、Alexander S. Ivanov、Vyacheslav S. Bryantsev、Michelle K. Kidder、Halie J. Martin、Erick Holguin、Kathleen A. Garrabrant、Radu Custelcean
DOI:10.1016/j.chempr.2018.12.025
日期:2019.3
using an aqueous bis(iminoguanidine) (BIG) sorbent that reacts with CO2 and crystallizes into an insoluble bicarbonatesalt. X-ray diffraction analysis of the bicarbonate crystals revealed “anti-electrostatic” hydrogen-bonded (HCO3−)2 dimers, stabilized by guanidinium cations and water. Mild heating of the crystals releases the CO2 and regenerates the BIG sorbent quantitatively, thereby closing the