Abstract
Crystalline and amorphous vanadyl polyphosphates (VO(PO3)2) with a P/V ratio=2 were used as catalysts in the ammoxidation of toluene. The crystalline specimens exhibit a rather low activity compared with the amorphous solid. The benzonitrile selectivities always reached nearly 90%. Noticeable benzaldehyde amounts were detected that could be due to an inadequate ammonia activation on the solid surface.
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Martin, A., Hannour, F.K., Brückner, A. et al. Ammoxidation of toluene on vanadyl polyphosphates-VO(PO3)2, 2. Catalytic properties. React Kinet Catal Lett 63, 245–251 (1998). https://doi.org/10.1007/BF02475395
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DOI: https://doi.org/10.1007/BF02475395