Catalytic Reaction Accompanied by Capillary Condensation, 3. Influence on Reaction Kinetics and Dynamics
Reaction Kinetics and Catalysis Letters
, E-ISSN: 1588-2837
||Capillary condensation, Catalytic reaction, Dynamics, Kinetics
Boreskov Institute of Catalysis, Omsk Department, Omsk 644040, Russia
The influence of capillary condensation of reagents on the catalytic reaction kinetics and dynamics was studied. The hydrogenation of p-xylene over Pt/SiO2 was used as a model reaction. Two types of SiO2 were used (KCK-1 with large pores and KCM-5 with small pores). It was shown that capillary condensation could modify the kinetics and the transition regimes. The proposed mathematical model demonstrates good agreement with experimental results for both steady-state and dynamic regimes, including reaction rate—temperature hysteresis.