Fluoroform (CHF3) is a byproduct of CHF2Cl with high global warming potential and long atmospheric lifetime, and its efficient utilization is a great challenge. The mechanochemical reaction between CHF3 and AlCl3 was studied for the first time, and the resultant ACFs (AlClxF3−x, x ≈ 0.1) were characterized by ion chromatography, X-ray photoelectron spectroscopy and X-ray diffraction. The reaction mechanism is revealed via experiments and DFT calculation. Here, the reactivity of AlCl3 is slightly higher than that of AlCl2F and AlClF2, while the reactivity of CHF2Cl and CHFCl2 is 2 to 6 orders of magnitude higher than that of CHF3. The reaction is self-accelerated until CHF3 is fully converted to CHCl3 and ACFs with controllable F-content. The present work provides a viable approach to convert CHF3 to CHCl3 and ACFs at ambient temperature and pressure, which is superior to the mainstream incineration technique with great energy demand and environmental pollution, and sacrifice of the precious F-resource.
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