Variation of the activity of СuO·ZnO·K2O/SiO2 catalysts during generation in dehydrogenation of methanol to formaldehyde

Variation of the activity of СuO·ZnO·K2O/SiO2 catalysts during generation in dehydrogenation... The development of the catalytic properties of supported model catalysts СuO·ZnO·K2O/SiO2 with different component ratios in methanol dehydrogenation was studied. In the temperature interval 400–500°С, the formation of the target product, formaldehyde, is accompanied by the formation of surface polymeric hydrocarbons, which undergo gradual condensation to coke with the evolution of hydrogen and carbon dioxide. By properly combining the concentrations of the supported components and the sequence of the deposition of zinc, copper, and potassium oxides, it is possible to reduce the time in which the steady-state catalyst operation mode is reached and to improve the catalyst selectivity with respect to formaldehyde formation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Variation of the activity of СuO·ZnO·K2O/SiO2 catalysts during generation in dehydrogenation of methanol to formaldehyde

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427216080097
Publisher site
See Article on Publisher Site

Abstract

The development of the catalytic properties of supported model catalysts СuO·ZnO·K2O/SiO2 with different component ratios in methanol dehydrogenation was studied. In the temperature interval 400–500°С, the formation of the target product, formaldehyde, is accompanied by the formation of surface polymeric hydrocarbons, which undergo gradual condensation to coke with the evolution of hydrogen and carbon dioxide. By properly combining the concentrations of the supported components and the sequence of the deposition of zinc, copper, and potassium oxides, it is possible to reduce the time in which the steady-state catalyst operation mode is reached and to improve the catalyst selectivity with respect to formaldehyde formation.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Nov 24, 2016

References

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