Abstract
The catalytic activity of CaA zeolite modified with metal cations (Cu, Zn, Pd) by means of ion exchange in the reaction of partial oxidation of sec-butanol to methyl ethyl ketone was studied at atmospheric pressure in the temperature range of 240-3500 C, space velocities 1500-4000 h-1 and partial pressures of butanol-2 2 − B P = 0.12-0.36 atm, oxygen 2 O P = 0.12-0.24 atm. It found that the metal zeolite catalyst CuZnPdCaA containing 3.0 wt% Cu2+, 2.0 wt% Zn2+ and 0.1 wt% Pd2+ exhibited the highest activity and selectivity in the reaction under consideration. Also, kinetic regularities of the reaction on the indicated catalyst were studied. On the basis of experimental data, a probable stepwise mechanism of the reaction was proposed and a theoretically substantiated kinetic model of the process developed.