Open AccessSYNTHESIS OF TARGETED CATALYST FOR THE OXIDATIVE DEHYDRATION OF SEC-BUTANOL AND STUDY OF THE KINETICS AND MECHANISM OF THE PROCESS
Author(s) -
F.A. Agayev
Publication year - 2020
Publication title -
kimya problemləri
Language(s) - English
Resource type - Journals
eISSN - 2522-1655
pISSN - 2221-8688
DOI - 10.32737/2221-8688-2020-4-477-484
Subject(s) - catalysis , chemistry , zeolite , partial pressure , butanol , kinetics , space velocity , dehydration , selectivity , inorganic chemistry , metal , reaction mechanism , partial oxidation , n butanol , atmospheric temperature range , ketone , kinetic energy , chemical kinetics , order of reaction , ethanol , oxygen , organic chemistry , reaction rate constant , thermodynamics , biochemistry , physics , quantum mechanics
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 PB−2 = 0.12-0.36 atm, oxygen O2 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.