Leszczyński Michał K, Kornacki Dawid, Terlecki Michał, Justyniak Iwona, Miletić Goran I, Halasz Ivan, Bernatowicz Piotr, Szejko Vadim, Lewiński Janusz
Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
ACS Sustain Chem Eng. 2022 Apr 11;10(14):4374-4380. doi: 10.1021/acssuschemeng.1c08402. Epub 2022 Apr 1.
The distinct research areas related to CO capture and mechanochemistry are both highly attractive in the context of green chemistry. However, merger of these two areas, , mechanochemical CO capture, is still in an early stage of development. Here, the application of biguanidine as an active species for CO capture is investigated using both solution-based and liquid-assisted mechanochemical approaches, which lead to a variety of biguanidinium carbonate and bicarbonate hydrogen-bonded networks. We demonstrate that in solution, the formation of the carbonate vs bicarbonate networks can be directed by the organic solvent, while, remarkably, in the liquid-assisted mechanochemical synthesis employing the same solvents as additives, the selectivity in network formation is inversed. In general, our findings support the view of mechanochemistry not only as a sustainable alternative but rather as a complementary strategy to solution-based synthesis.
与二氧化碳捕集和机械化学相关的不同研究领域在绿色化学背景下都极具吸引力。然而，这两个领域的融合，即机械化学二氧化碳捕集，仍处于发展初期。在此，使用基于溶液和液相助机械化学方法研究了双胍作为二氧化碳捕集活性物种的应用，这导致了多种碳酸双胍盐和碳酸氢盐氢键网络的形成。我们证明，在溶液中，碳酸网络与碳酸氢盐网络的形成可由有机溶剂引导，而显著的是，在使用相同溶剂作为添加剂的液相助机械化学合成中，网络形成的选择性则相反。总体而言，我们的研究结果支持了机械化学不仅是一种可持续替代方法，而且是基于溶液合成的补充策略这一观点。
