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Kinetics of formaldehyde oxidation on the V–Ti oxide catalyst
Abstract
Heterogeneous catalytic oxidation of formaldehyde in the gas phase may be considered as an alternative to multistep liquid-phase synthesis of formic acid. Monolayer V-Ti oxide catalysts are active and selective in the oxidation of formaldehyde to formic acid. Detailed investigation of kinetics of formaldehyde oxidation over monolayer V-Ti catalyst was done. The consecutive parallel reaction scheme of side products formation was established. CO2 forms during the oxidation of formaldehyde on the parallel path and overoxidation of formic acid on the consecutive path; CO forms from formic acid on the consecutive path. It was shown that oxygen and water accelerate the formic acid formation and water retards the CO formation. Based on experimental data, kinetic model of formaldehyde oxidation was developed. Developed kinetic was used for the mathematical simulation of the formaldehyde oxidation process and determination of dynamic and constructional reactor parameters. Formic acid production by gas phase oxidation of formaldehyde is unique and does not have any analogue. As opposed to conventional technologies, it is energy saving, environmentally friendly and technologically simple. A pilot plant using this technology is under construction.
About the Authors
E. V. Danilevich
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
G. Ya. Popova
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
I. A. Zolotarskiy
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
A. Ermakova
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
T. V. Andrushkevich
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
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Review
For citations:
Danilevich E.V., Popova G.Ya., Zolotarskiy I.A., Ermakova A., Andrushkevich T.V. Kinetics of formaldehyde oxidation on the V–Ti oxide catalyst. Kataliz v promyshlennosti. 2010;(6):15-22. (In Russ.)
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