Effect of vanadia loading on the acidic, redox and catalytic properties of V2O5–TiO2 and V2O5–TiO2/SO42− catalysts for partial oxidation of methanol

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

“…A new V 2p 3/2 peak at 516.4-516.5 eV appears in the reaction mixture pointing to the partial reduction of V 5+ to V 4+ even at room temperature. It should be noted that in the highly cited studies [57][58][59][60][61] [20,[62][63][64][65][66][67][68]. These numbers are in good agreement with our data.…”

“…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.…”

Catalysis in VOC Abatement

“…In the research field different molybdenum [235][236][237][238] and vanadia based catalysts [239][240][241][242][243][244][245][246][247] have been widely under investigation for methanol oxidation. Ai [235] has studied the performance of V 2 O 5 -MoO 3 catalyst in methanol oxidation and has revealed that the V 2 O 5 -MoO 3 catalyst is as active as the MoO 3 -SnO 2 catalyst to produce formaldehyde and more active than MoO 3 -TiO 2 and MoO 3 -FeO 3 catalysts.…”

A strategy for single-step elaboration of V2O5-grafted TiO2 nanostructured photocatalysts with evenly distributed pores

“…Furthermore, due to the lower band gap energy, the light absorption capacity of the V 2 O 5 -TiO 2 systems is higher than that of the TiO 2 layers. It results in generation of more e − and h + pairs [13][14][15][16]. In addition, V-doping widens the light absorption range of titania and shortens the transition time of electron to the sample surface which is favorable to separate the e − -h + pairs [17].…”