Catalytic Performance and Kinetic Study in the Total Oxidation of VOC over Micro/Meso Porous Catalysts

Abstract

The total oxidation of toluene at a wide temperature range (200–500 oC) over micro/mesoporous platinated catalysts has been investigated about activity, selectivity to CO2 and CO, catalyst's stability versus coke deposition and reaction kinetics. Kinetic of toluene oxidation was measured under various oxygen and toluene pressures and also the effect of the reaction conditions on the catalytic performance was studied. For more study, two kinetic models have also been selected and tested to describe the kinetics for this reaction. The results show that the Langmuir-Hinshelwood model provides a good fit for the experimental data. The obtained results showed that Pt/HZSM-5(30)-HMS have a better ability than other catalysts for the oxidation reaction of toluene, such as maximum toluene conversion (>97%), high selectivity to CO2 (100%), good catalytic stability against coke deposition and appropriate kinetic parameters

Keywords

• toluene oxidation
• kinetics
• conversion
• selectivity
• stability
• langmuir-hinshelwood model