regeneration
of adsorbent catalysts by hydrodechlorination. For regeneration,
the adsorbent-catalyst was separated from the solution by filtration
and transferred to a temperature-controlled glass reactor
equipped with a magnetic stirrer. The apparatus for the liquidphase
hydrodechlorination of 1,2-DCB consisted of two main parts:
a 50mL reactor and a volumetric block to maintain a constant H2
pressure. The reaction medium consisted of two immiscible fluids:
11mL of 2-propanol and 4mL of 50 wt% solution of KOH. It was
shown in [34] that the presence of an alkali is necessary to bind the
HCl which forms in the course of the hydrodechlorination. The mass
transfer of the forming chloride ions to the aqueous phase prevents
deactivation of the catalyst. On the basis of the results presented in
[35], 2-propanol was used as the organic phase, which efficiently
dissolves 1,2-DCB and facilitates the formation of active hydrogen
species on the catalyst surface during hydrodechlorination.