ОСОБЕННОСТИ ФОРМИРОВАНИЯ КОМПОЗИЦИЙ СuMoO4/БАЗАЛЬТОВОЕ ВОЛОКНО ДЛЯ КАТАЛИТИЧЕСКОГО ДОЖИГА САЖИ

The use of basalt fiber as a support for copper-molybdate catalyst for the oxidation of soot is shown in details. The heterogeneity of copper molybdate layer formed on the surface of basalt fibers is detected by SEM and XRD. The polymer-salt gel with an original equimolar ratio of Cu and Mo on the fiber is accompanied by leaching of iron from the basalt structure that perpetuates copper molybdate layer on the support during the subsequent pyrolysis and leads to the formation of phases Сu3Мо2О9 and FeO–Cu3Mo2O9, which in the process of catalytic combustion of soot decompose to СuMoO4 and oxides of CuO and Fe2O3. Composition of 5%СuMoO4/ basalt fiber after using in two cycles of the catalytic process provides the stable parameters of soot combustion, comparable to the activity of a bulk sample СuMoO4 (tmax = 403 °С, η(CO2) = 97,8 %). Results of the study are useful for the development of methods for forming composite structures of catalytic coatings particulate filters.