METAL OXIDE CATALYSTS ON STRUCTURED CERAMIC SUPPORTS FOR METHANE LOW TEMPERATURE BURNING


  • A. Trypolskyi L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31 http://orcid.org/0000-0003-1682-0241
  • G. Kosmambetova L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31 http://orcid.org/0000-0001-9733-7782
  • S. Soloviev L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31 http://orcid.org/0000-0001-9271-7495
  • A. Kapran L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31 http://orcid.org/0000-0002-9371-0292
  • P. Strizhak L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31 http://orcid.org/0000-0003-0280-8719
Keywords: methane, deep oxidation, Pd-Co3O4-ZrO2-catalysts, structured cordierite matrices, secondary support, catalytic heat generators.

Abstract

Nanosized Pd-Co3O4-ZrO2-catalysts have been developed on monolithic matrices (Al2O3/cordierite) of honeycomb structure that exhibit stable activity in low-temperature catalytic non-flammable methane combustion and are promising for use in portable catalytic heat generators. For the purpose of the structural and functional design of an efficient catalyst for the target process, studied is the effect of composition and method of preparation of catalysts containing 3d-metal (Co) oxide and ZrO2 in the porous matrix of Al2O3 as the secondary support, formed on the surface of the cordierite monoliths, on the functional properties of the catalytic compositions in the process of deep oxidation of methane in a stoichiometric mixture with oxygen. Based on X-ray diffraction data, it was substantiated that aluminium oxide as a secondary carrier is a mixture of amorphous and γ-modification of Al2O3. In this case, the crystallization with the formation of the phase γ-Al2O3 occurs when the material is calcined at a temperature of 850 oC. According to the analysis of images of transmission electron microscopy (TEM), the size of the palladium nanoparticles formed in the catalytic coating, obtained by thermal decomposition of aluminium nitrate, is 8-15 nm. It has been shown that zirconia contributes to the stable activity of catalysts by preventing the high-temperature interaction of cobalt and aluminum oxides with the formation of low active Co-Al spinel. The introduction of palladium into the composition of Co3O4/Al2O3/cordierite reduces the strength of the bond of oxygen with the catalyst, which increases its activity; the role of palladium within the Pd-So3O4/Al2O3/cordierite is also in increasing the stability of the Pd-Co3O4 composition under reaction conditions. Simultaneous application of Co3O4 and Pd compared with successive one causes the formation of a more active catalyst. The developed catalytic compositions exhibit stable activity under reaction conditions for seven cycles of operation. Ref. 14, tab. 2, fig. 3.

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Author Biographies

A. Trypolskyi, L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31

Trypolskyi.jpgAuthor information:  Senior Researcher, L.V.Pysarzhevsky Insitute of Physical Chemistry, National Academy of Sciences of Ukraine, Candidate of Chemical Sciences.
Education: Kiev Polytechnic Institute, Faculty of of Chemical Technology.
Research area: Kinetics and Macro-kinetics of Heterogeneous-Catalytic Reactions; Heterogeneous-Catalytic Reactions on Fractal Surfaces.
Publications: more than 100 scientific articles, 14 patents.

G. Kosmambetova, L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31

Kosmambetova.jpgAuthor information: Senior Researcher, L.V.Pysarzhevsky Insitute of Physical Chemistry, National Academy of Sciences of Ukraine, Candidate of Chemical Sciences.
Education: Novosibirsk State University, Faculty of Natural Sciences.
Research area: heterogeneous catalytic conversion of carbon monoxide and methane, dehydration of glycerol into valuable chemicals
Publications: more than 70 scientific articles, 15 patents.

S. Soloviev, L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31

Soloviev.jpgAuthor information: Deputy Director of L.V.Pysarzhevsky Insitute of Physical Chemistry, National Academy of Sciences of Ukraine, Leading Researcher, Doctor of Chemical Sciences, Professor.
Education: Kiev Polytechnic Institute, Chemical Technology Faculty.
Research area: Heterogeneous-catalytic processes of deep oxidation of organics, complex cleaning of industrial exhaust gases and motor vehicles (oxidation of carbon monoxide and hydrocarbons, ozone decomposition, reduction of nitrogen oxides, etc.), oxidative reforming of methane and its homologues producing hydrogen and/or synthesis gas (steam, carbon dioxide, oxy-carbon dioxide conversion, tri-reforming), selective catalytic reduction of NOx (with hydrocarbons, oxygenates, NH3), tandem-processes for the production of industrially important dienes by conversion of C2, C4-bioalcohols. Structurally functional design of new generation catalysts for the implementation of aforementioned processes.
Publications: more than 120 scientific articles, 20 patents.

A. Kapran, L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31

Kapran.jpgAuthor information: Senior Researcher, L.V.Pysarzhevsky Insitute of Physical Chemistry, National Academy of Sciences of Ukraine, Candidate of Chemical Sciences.
Education: T.G.Shevchenko Kyiv State University, Chemical Faculty.
Research area: Heterogeneous catalytic vapor-phase processes of the conversion of lower alcohols (reforming, carbonylation of methanol) to produce hydrogen as an energy source, industrially important acetyls (in particular methyl acetate).
Publications: 32 scientific articles, 4 patents.

P. Strizhak, L.V. Pisarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine Ukraine, 03028 Kyiv, ave. Science, 31

Strizhak.jpgAuthor information: The Head of Department of catalytic synthesis based on single-carbon molecules of L.V.Pysarzhevsky Insitute of Physical Chemistry, National Academy of Sciences of Ukraine, Corresponding Member of National Academy of Sciences of Ukraine, Doctor of Chemical Sciences, Professor. Invited Professor at the University of Alaska Anchorage (USA), Institute of Physical Chemistry, University of Wurzburg (Germany), Department of Chemistry, University of Toronto (Canada).
Education: Moscow Institute of Physics and Technology, Faculty of Molecular and Chemical Physics.
Research area: Carbon nanotubes, nanoparticles, nanostructures and nanosized effects in heterogeneous catalysis; heterogeneous-catalytic reactions on fractal and inhomogeneous surfaces. Producing synthetic liquid fuels (Fischer-Tropsch synthesis). Nonlinear phenomena in heterogeneous catalytic processes. Publications: more than 300 scientific works including 4 books, more than 30 patents.


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Published
2019-09-25
How to Cite
Trypolskyi, A., Kosmambetova, G., Soloviev, S., Kapran, A., & Strizhak, P. (2019). METAL OXIDE CATALYSTS ON STRUCTURED CERAMIC SUPPORTS FOR METHANE LOW TEMPERATURE BURNING. Vidnovluvana Energetika, (3(58), 91-99. https://doi.org/https://doi.org/10.36296/1819-8058.2019.3(58).91-99