StructureLewis acidityFluoride ion affinityHeterogeneous catalysisAluminium chlorofluoride,ACF,(AlCl_xF_(3-x),x approx = 0.05-0.25)is an amorphous solid Lewis acid with an extraordinary acid strength that was patented by DuPont in 1992.It reaches the acidity of antimony pentafluoride,SbF_5,and,in...