Hd. Quan et al., Preparation of 1,1,1,2-tetrafluoroethane by the vapor-phase catalytic reaction of 1,1,1-trifluoro-2-chloroethane with anhydrous hydrogen fluoride, J FLUORINE, 111(2), 2001, pp. 193-199
1,1,1,2-Tetrafluoroethane was prepared in 97% selectivity by the vapor-phas
e catalytic reaction of 1,1,1-trifluoro-2-chloroethane with anhydrous hydro
gen fluoride (AHF) over a metal fluoride catalyst (CrF3 and CoF2) supported
on porous aluminum. fluoride (PAF). The relationship between the crystalli
ne phase transition of porous aluminum fluoride and temperature from 100 to
640 degreesC was investigated by X-ray diffraction. (C) 2001 Elsevier Scie
nce B.V. All rights reserved.