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- W203454004 abstract "Vanadoaluminophosphate(VAPO) crystals having the AlPO-5 structure were synthesized by the rapid crystallization method, and their physical properties and catalytic performance in the ammoxidation of propane were compared with those of vanadosilicate(V-silicate) having the pentasil structure. It was shown that vanadium ions are incorporated more in the AlPO-5 crystal than in the silicate crystal. ESR signal of V4+ indicated that the vanadium ion was atomically dispersed in VAPO crystal and has the redox property to change its oxidation state between V4+ and V5+. Although the vanadium ion in the V-silicate was also atomically dispersed, ESR and UV-visible measurements suggested that V4+ state is more stable in VAPO than in V-silicate. In accordance with the difference between VAPO and V-silicate, VAPO was more active and selective than V-silicate for the ammoxidation of propane; the selectivity to acrylonitrile attained 33% for VAPO." @default.
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- W203454004 date "1989-01-01" @default.
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- W203454004 title "Selective Ammoxidation of Propane on Vanadoaluminophosphate Catalysts" @default.
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- W203454004 doi "https://doi.org/10.1016/s0167-2991(08)62009-1" @default.
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