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Gas-phase ethanol photocatalytic oxidation on the series of TiO 2 samples has been studied by the FTIR in situ method. The TiO 2 samples were prepared by the usual method and they possessed similar physicochemical properties (porosity, specific area), but were found to have different...
A series of vanadia doped TiO 2 -pillared clay (TiO 2 -PILC) catalysts with various amount of vanadia were studied for selective catalytic reduction (SCR) of NO by ammonia in the presence of excess oxygen. It was found that the V 2 O 5 /TiO 2 -PILC catalysts were highly active for the SCR...
Micro-molar concentrations of aqueous 17-β-oestradiol were 98% destroyed in 3.5 h by photocatalysis over the titanium dioxide powder immobilised on Ti-6Al-4V alloy. The concentration of oestradiol was determined by HPLC with fluorescence detection. The degradation kinetics were fitted to a...
The complete catalytic oxidation of trichloroethylene (TCE) over alumina-supported noble metal catalysts (Pt and Pd) and in the presence of hydrogen-rich compounds, i.e. water, hexane and toluene was evaluated. Experiments were performed at conditions of lean TCE concentration (around 1000 ppm)...
A 1.2 wt.% Ag/γ-Al 2 O 3 catalyst for the selective catalytic reduction of NO with propene (C 3 H 6 -SCR) was rapidly and permanently deactivated following the addition of 100 ppm of SO 2 to the gas stream. DRIFTS studies performed on the deactivated silver–alumina material showed the...
Series of chromium spinels MCr 2 O 4 (M = Mg, Zn, Fe, Co, Ni, Cu, Mn) were tested in the selective catalytic reduction (SCR) of NO with NH 3 . Catalytic activity and selectivity to N 2 O depend on the nature of the divalent metal M. The studies by TPR, XPS and chemical analysis lead to the...
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