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Li2Cu2(MoO4)3/TiO2 + SiO2/Ti composition for the diesel soot catalytic afterburning
Abstract
Catalytically active oxide layer on the titanium surface to form a catalytic afterburner Diesel soot coating was first formed by two methods: plasma-electrochemical production of the oxide film on titanium and extraction-pyrolytic coating compound Li2Cu2(MoO4)3. Catalytic compositions Li2Cu2(MoO4)3/TiO2 + SiO2/Ti, received by single extraction pyrolytic treatment of oxidized titanium surface provides high speed of combustion soot from ~ 300 °C. The subsequent covering of Li2Cu2(MoO4)3 leads to a decrease of catalyst activity, which may be due to the growth of crystallites molybdate phase and filling the open pores of the oxide film. Double molybdate of lithium and copper has the ability to significantly reduce the CO yield in the products of soot oxidation. The advantages of these techniques are: the possibility of forming a high adhesion resistant coatings on the any complexity surfaces, ease of hardware implementation, high productivity and low cost of processes. The obtained results are recommended to be used in developing of forming composite coatings methods for catalytic soot filters.
About the Authors
N. V. Lebukhova
Institute of Materials Science, Khabarovsk Research Center, Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk
Russian Federation
Russian Federation
V. S. Rudnev
Institute of Chemistry FEB RAS, Vladivostok
Russian Federation
Russian Federation
P. G. Chigrin
Institute of Materials Science, Khabarovsk Research Center, Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk
Russian Federation
Russian Federation
K. S. Makarevich
Institute of Materials Science, Khabarovsk Research Center, Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk
Russian Federation
Russian Federation
I. V. Lukiyanchuk
Institute of Chemistry FEB RAS, Vladivostok
Russian Federation
Russian Federation
N. F. Karpovich
Institute of Materials Science, Khabarovsk Research Center, Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk
Russian Federation
Russian Federation
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Review
For citations:
Lebukhova N.V., Rudnev V.S., Chigrin P.G., Makarevich K.S., Lukiyanchuk I.V., Karpovich N.F. Li2Cu2(MoO4)3/TiO2 + SiO2/Ti composition for the diesel soot catalytic afterburning. Kataliz v promyshlennosti. 2011;(2):47-52. (In Russ.)
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