王誉富, 贾树贤, 吴雅南, et al. A Study on the Active Components of Iron-Molybdenum Oxide Catalysts Used in Ammoxidation of Methanol for HCN Syntheses[J]. CIESC Journal, 1990, (1).
王誉富, 贾树贤, 吴雅南, et al. A Study on the Active Components of Iron-Molybdenum Oxide Catalysts Used in Ammoxidation of Methanol for HCN Syntheses[J]. CIESC Journal, 1990, (1).DOI:
The active components of a series of Iron-Molybdenum oxide catalysts andtheir correlations with catalytic activity in ammoxidation of methanol were investigated by X-Ray diffraction
IR
Mossbauer
ESR and ESCA techniques. X-Ray diffraction and IR studies indicated that Fe and Mo ions were present as Fe2(MoO4)3
MoO3 and α-Fe2O3 in the catalysts. The plots of the relative content of Fe2(MoO4)3 and activity versus Fe/Mo showed corresponding peak shapes. Mossbauer
ESR and ESCA analysis showed that Fe existed in Fe3+ states at two different sites
one with octahedral coordination in Fe2(MoO4)3
the other with imperfect coordination in Fe2O3
xMoO3 where x<3. The former may be the basic active component
performing the function of selective oxidation together with the latter.