Active Carbon from Date Stones for Phenol Oxidation in Trickle Bed Reactor, Experimental and Kinetic Study

The catalytic wet air oxidation (CWAO) of phenol has been studied in a trickle bed reactor
 using active carbon prepared from date stones as catalyst by ferric and zinc chloride activation (FAC ZAC). activated carbons were characterized measuring their surface area adsorption capacity besides conventional properties, then checked for CWAO reactor operating at different conditions (i.e. pH, gas flow rate, LHSV, temperature oxygen partial pressure). results showed that the ZAC), without any metal supported, gives highest conversion. reaction network proposed accounts all detected intermediate products composed several consecutive parallel reactions. parameters model estimated experimental data obtained continuous temperatures (120-160 C) pressures (8-12 bar). Simple power law well Langmuir-Hinshelwood (L-H) expressions accounting effects modeling network. A non-linear multi-parameter estimation approach was used to simultaneously evaluate high number parameters. Approach simple only succeeds fitting disappearance. Instead, when L-H are incorporated steps, accurately describes concentration profiles, giving mean deviations below 10%.