Nature of surface sites of V2O5–TiO2/SO42- catalysts and reactivity in selective oxidation of methanol to dimethoxymethane

Polymeric vanadyl species determine the low-temperature activity of V-based catalysts for the SCR of NO x with NH 3

“…1B) shows that a high sulfur content on the catalysts increases the amount of Brønsted acid sites, whereas it decreases the amount of Lewis acid sites, in accordance with our DRIFTS data on NH 3 adsorption (fig. S4A) and previous literature ( 25 ). …”

Selective oxidation of methanol to form dimethoxymethane and methyl formate over a monolayer V2O5/TiO2 catalyst

“…For instance, unsupported and silica-supported crystallites of vanadium pentoxide show high selectivity towards formaldehyde with the yield of 96-98 % in the temperature range of 300-400 °С [5][6][7][8]. In contrast, monolayer V 2 O 5 /TiO 2 catalysts demonstrate high activity and selectivity in the methanol oxidation to methyl formate and to dimethoxymethane at low temperatures (100-200 °С), whereas the formation of formaldehyde is greatly suppressed [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. On the other hand, all products mentioned above are of practical significance.…”

The Effect of Sulphate Anions on the Ultrafine Titania Nucleation

“…The formation of chelate sulphate complex corresponds to skeletal FTIR band at 1201 cm −1 [21] as chelating bidentate complex has four bands at 1240–1230, 1125–1090, 1035–995 and 960–940 cm −1 which are assigned to the asymmetric and symmetric stretching frequencies of S=O and S–O bands [19]. …”