[24] Wojciechowska M,Zieliński M,Pietrowski M.MgF 2 as a non-conventional catalyst support[J].Journal of Fluorine Chemistry,2003,120(1):1-11.[25] Kemnitz E,Zhu Y,Adamczyk B.Enhanced Lewis acidity by aliovalent cation doping in metal fluorides[J].Journal of Fluorine Chemistry,2002,114(2...