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- W2022669402 abstract "A porous ZrO2–SiO2mixed oxide catalyst support was synthesized by a sol-gel method using 2,4-pentane dione as the complexing agent. A series of supported vanadia catalysts with V2O5contents ranging from 1–10 wt% were prepared using the ZrO2–SiO2mixed oxide as the support. Characterization techniques such as BET surface area, solid-state51V and1H MAS NMR, and diffuse reflectance FT-IR were employed for the structural elucidation studies of the support and catalysts. Partial oxidation activities of the catalysts were determined using ethanol oxidation as the model reaction.51V NMR studies indicated the presence of tetrahedally coordinated vanadate species at lower vanadia contents and octahedral vanadyl species at higher V2O5loadings.1H MAS NMR spectra showed peaks corresponding to hydroxyl groups of zirconia and silica. Ethanol partial oxidation activities of the catalysts indicated higher acetaldehyde selectivity for the V/Zr–Si catalysts in comparison to the V2O5/ZrO2and V2O5/SiO2catalysts." @default.
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- W2022669402 date "1999-05-01" @default.
- W2022669402 modified "2023-09-23" @default.
- W2022669402 title "Synthesis, Characterization, and Activity Studies of V2O5/ZrO2–SiO2Catalysts" @default.
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- W2022669402 doi "https://doi.org/10.1006/jcat.1999.2425" @default.
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