The Oxidative Dehydrogenation of Ethane: Convectional vs Microwave Heating of Ba - Containing Catalysts
Chemical Engineering and Processing
||Oxidative dehydrogenation Ethane Microwave heating Catalyst
Bolotov Vasiliy A.
Chesnokov Vladimir V.
Tanashev Yuriy Y.
Parmon Valentin N.
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Lavrentieva 5, 630090, Novosibirsk, Russia
Novosibirsk National Research State University, Novosibirsk-90, 2 Pirogova Str., 630090, Novosibirsk, Russia
Russian Science Foundation
The influence of heating method on oxidative dehydrogenation of ethane (ODE) over BaO–CeO2–ZrO2 and
BaCl2–TiO2–SnO2 catalysts was studied. Noticeable differences were observed at the ODE under conventional
heating and microwave (MW) heating when only the granules of catalyst but not the surrounding gas mixture are
heated. The MW heating of the BaO–CeO2–ZrO2 catalyst resulted in a decrease in selectivity to carbon dioxide
and in an increase in selectivity to carbon monoxide. Supposedly, the conventional heating led to gas-phase
complete oxidation of carbon monoxide to carbon dioxide. The MW heating of the BaCl2–TiO2–SnO2 catalyst
suppressed almost completely parallel and consecutive deep oxidation of ethylene but selectivity to ethylene
increased remarkably. The study demonstrates potentialities of the MW heating in enhancing the efficiency of
ODE. The observed phenomena can be accounted for the effective “quenching” of the target ODE product via
inhibiting undesirable homogeneous reactions in the gas phase.