Kinetics study of CWPO of phenol wastewater over Cu-ZSM-5/PSSF catalysts
prepared by ion-exchanged method
Abstract
Cu-ZSM-5 was prepared on the paper-like sintered stainless steel fibers
(PSSF) by ion-exchange method for catalytic wet peroxide oxidation
(CWPO) of phenol in a fixed bed reactor. The prepared Cu-ZSM-5/PSSF
catalyst was characterized by SEM, BET, XRD, FT-IR and UV-vis,
respectively. And the effects of different catalyst bed height, reaction
temperature and feed flow rate on catalytic performance were
investigated to obtain optimum reaction condition. Finally, the
catalytic reaction kinetics analysis over Cu-ZSM-5/PSSF catalyst were
carried out with the Power-rate Law Kinetic model. The experimental
results showed that the reaction order was the first-order reaction, and
the activation energy of the oxidation reaction was Ea=72.9 kJ/mol. The
initial oxidation rate equation (−rA0=5.36×108 e−72994/RT CA) was
obtained for phenol degradation using Cu-ZSM-5/PSSF catalyst.