Olefin Oxidation Over Oxide Catalysts With the Scheelite Structure*

Catalytic oxidative dehydrogenation of propane over Mg–V/Mo oxides

“…The more basic oxide anion can more easily abstract a hydrogen atom from the adsorbed propane. Similar increases in conversion and selectivity associated with cation vacancies have been seen with other oxidation catalysts [61][62][63][64][65][66]. Sleight and Linn attribute the increase in selectivity and activity to the more basic nature of the oxide anions, promoting allyl formation [61].…”

“…Similar increases in conversion and selectivity associated with cation vacancies have been seen with other oxidation catalysts [61][62][63][64][65][66]. Sleight and Linn attribute the increase in selectivity and activity to the more basic nature of the oxide anions, promoting allyl formation [61]. Tsunoda et al [63] and Fan et al [62] suggest that the increase in activity is due to the more facile diffusion of the oxide anions through the bulk structure.…”

Structure–property relationships of low sintering temperature scheelite-structured (1 − x)BiVO4–xLaNbO4 microwave dielectric ceramics

“…[1][2][3][4][5][6] Monoclinic scheelite BiVO4 is an n-type photoactive semiconductor with a band gap of 2.4 eV, which has been investigated widely for water splitting applications under visible light. 5,6,10 In addition, monoclinic BiVO4 possesses a high microwave permittivity ( r) ~ 68 and quality factor (Qf) ~ 8,000 GHz, which make it a strong candidate for microwave device applications.…”

Selective oxidation and oxidative dehydrogenation of hydrocarbons on bismuth vanadium molybdenum oxide

“…A notable exception has been the case of propene oxidation to acrolein over Bi 1Àx/3 V 1Àx Mo x O 4 (x = 0-1) [34] prepared with a scheelite structure. Ueda et al [12] and Sleight et al [35,36] have reported that Bi 1Àx/3 V 1Àx Mo x O 4 is more active for the oxidation of propene than either bismuth molybdate (x = 1) or bismuth vanadate (x = 0). Our previous work proposed a generalized model for the kinetics of propene oxidation over Bi 1Àx/3 V 1Àx Mo x O 4 , and explained the exact roles of Bi, Mo, and V in affecting the activity and selectivity of Bi 1Àx/3 V 1Àx Mo x O 4 [37][38][39].…”