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- W4313596189 abstract "The catalytic properties of molybdenum-alumina systems depend on the synthesis conditions. Herein, we considered the effect of MoO3/Al2O3 catalyst pretreatment conditions on their activity in propylene and propane conversion. MoO3/Al2O3 catalysts were synthesized by wetness impregnation of the support with a solution of molybdenum citrate complex and activated in different atmospheres at 550–590 °С. The maximum conversion of propylene and yields of metathesis products were observed for the sample activated in an inert gas flow. This is caused by the formation of precursors of the metathesis active sites in this sample, i.e. isolated surface monomolybdate species. Activation of the catalyst in hydrogen leads to the reduction of Mo6+ to Mo5+/Mo4+, which ensure the increased activity and selectivity in propane dehydrogenation. Therefore, it was shown that make it possible to purposefully change the properties of the same molybdenum-alumina catalyst to suit the problems of the specific reaction (metathesis, oligomerization, dehydrogenation, aromatization, cracking)." @default.
- W4313596189 created "2023-01-06" @default.
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- W4313596189 date "2023-01-01" @default.
- W4313596189 modified "2023-09-27" @default.
- W4313596189 title "Active sites formation of molybdenum oxide catalyst for hydrocarbon conversion" @default.
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- W4313596189 doi "https://doi.org/10.1016/j.apcata.2022.119012" @default.
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