Aluminum fluoride high-surface-area

This new fluorolytic route was first time published for the synthesis of nanoscopic high-surface-area aluminum fluoride (HS-AIF3) in 2003 [9], which has been proven in the meantime to be a general synthesis approach for nanoscopic metal fluorides [10-25]. For deeper insights into the mechanism of the fluorolytic sol-gel approach see Ref. [26]. 

For hydroxylated magnesium fluoride, the range from 100 to 40 wt% aqueous HF at a constant HF to Mg ratio of 2 results in Brpnsted acidic samples of different strengths for hydroxylated aluminum fluoride even higher water concentrations can be applied. These samples possess very high surface areas ranging from 200 to 450 mVg. Moreover, adsorption of CO reveals the presence of fivefold and fourfold coordinate Mg sites at the surface. This additional finding... 

Metal fluoride nanomaterials can also be prepared by fluorination of oxide gels. The reaction of magnesium and aluminum alkoxides with HE in nonaqueous solvents led to the formation of amorphous or crystalline nanosized MgE2 and AIF3, respectively, with high specific surface areas [16, 17]. 

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