In this work, we study the activity of several Pd–Al pillared
clays, prepared by two different methods (impregnation and ionexchange)
and with Pd contents between 0.5 and 5wt% in the HDC
of 4-chlorophenol in aqueous phase using formic acid as hydrogen
source. Likewise, the effect of temperature, the 4-chlorophenol initial
concentration and the formic acid to 4-chlorophenol molar ratio
employed in the reactionwere also investigated. Besides, a stability
test was carried out in order to study the possible deactivation of
the catalysts synthesized.