from first principles PP-I-1

PP-III-28Influence of Support Treatment with Inorganic Solutions on Properties ofGlass and Basalt Fiber CatalystsFederyaeva V.S. 1 , Vitkovskaya R.F. 1 , Petrov S.V. 1 , Goralski J. 21 St. Petersburg State University of Technology and Design, St. Petersburg, Russia2 Technical University of Lodz, Lodz, PolandF_valeriya@mail.ruCatalytic properties of glass and basalt fiber catalysts containing transition metal oxides forCO and CH 4 oxidation reactions have been studied. Earlier investigations revealed [1] thatpreparation of catalysts by impregnation with nitrate solution resulted in formation of nickeloxide particles 11 nm in size on the fiber surface. In order to obtain a uniform catalytic layerwith highly dispersed nickel oxide on the glass and basalt fiber surface, increase a specificsurface area, we studied the influence of the fibers treatment with 20 % HCl solution (I way),0.1 N solution of nitric acid with subsequent impregnation with Na 2 SiO 3 (II way) andtemperature of impregnation solution on dispersion of active sites and its interaction withfiber surface and metal content, specific surface area, acidity and catalytic activity of obtainedcatalysts.Investigation of catalysts using TEM and SEM methods showed the preparation methodaccording to the first way resulted in formation of nickel oxide particles 2.5 nm in size on thefiber surface. The treatment according to second way results in uniform distribution of nickeloxide particle with a size 1 nm on fiber surface. Impregnation by the third way at 130ºCresults in uniform distribution of thin nickel oxide film on glass fiber surface. Reductionpeaks of hydrogen (TPR) indicated that all ways of catalysts preparation lead to formation ofstrongly interacted with basalt and glass fiber surface catalytic layer as the desorption ofhydrogen occurs at 350ºC. Basalt fiber catalysts treated with hydrochloric acid showed lowerignition temperature and temperature of full conversion determined by thermo-programmedoxidation of CO and CH 4 than untreated catalysts. The specific surface area of basalt fibercatalysts after the treatment increased from 1.68 to 2.89 m 2·g -1 . However the specific surfacearea, ignition and full conversion temperatures of CO and CH 4 unchanged after the treatment.References:[1] V. S. Federyeava, R. F. Vitkovskaya, S. V. Petrov The 8th International Conference«Environmental Engineering». Vol.1 (2011) 85.180