Reversible absorption of NF3 with high solubility in Lewis acidic ionic liquids

It is urgent to find a way to capture Nitrogen trifluoride (NF3) with the increasing emissions during the expansion of the electronic industry. Due to the strong electron - withdrawing of F atom, the interactions between NF3 and most compounds are quite weak, making the capture of NF3 full of challenges. Herein, a pioneering attempt was made to capture NF3 in Lewis acidic ionic liquids (LAILs). Impressively, under the condition of 313.2 K and 1.0 bar, [Omim][Fe2Cl7] LAILs exhibited high NF3 solubility (0.1801 mol/mol), which is 64 and 180 times higher than that of [Emim][Ac] and [Bmim][PF6] respectively. The interaction mechanism between LAILs and NF3 was proposed with its reversible regeneration, which has been confirmed by FT - IR, Raman, and theoretical calculations. This work reveals a novel insight into industrial prospects and applications of NF3 capture.

Automated summary

With the increasing emissions of NF3 during the expansion of the electronic industry, finding a way to capture NF3 has become urgent. This study made a pioneering attempt to capture NF3 in Lewis acidic ionic liquids (LAILs), and found that [Omim][Fe2Cl7] LAILs exhibited high NF3 solubility under specific conditions, providing a novel insight into NF3 capture.