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- W1993566730 abstract "Alumina based catalysts containing up to 30 wt% MoO3 have been studied in depletive and heterogeneous conditions in the oxyhydration reaction of propylene to acetone. In this process, confined to the 10–30 wt% MoO3 region, water greatly enhances catalytic activity and promotes selectivity to acetone, whereas gaseous oxygen promotes only the catalytic activity. Results strongly indicate that active sites should have a mixed Mo(V)/Mo(VI) character, originating from reduction of octahedral oxomolybdenum species, either polymeric or incorporated in the lattice. The origin of acidity is connected with Mo(V), whereas Mo(VI) rather than gaseous oxygen is involved in the oxidation of the reaction intermediate. It is suggested that the essential features of catalysts active in oxyhydration are proper acidity and mobility of OH-groups together with a site for oxidation of the reaction intermediate. Mo4O10(OH)2 or reduced heteropolyacids appear to satisfy these conditions." @default.
- W1993566730 created "2016-06-24" @default.
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- W1993566730 date "1975-06-01" @default.
- W1993566730 modified "2023-09-26" @default.
- W1993566730 title "Structure and catalytic activity of MoO3 a Al2O3 systems IV. Nature of sites for oxyhydration of propylene to acetone" @default.
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- W1993566730 doi "https://doi.org/10.1016/0021-9517(75)90059-7" @default.
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