Effects of iron content on bismuth molybdate for the oxidative dehydrogenation of n-butenes to 1,3-butadiene
- Effects of iron content on bismuth molybdate for the oxidative dehydrogenation of n-butenes to 1,3-butadiene
- 박정현; 노혜령; 박지원; 노경호; 정광덕; 신채호
- n-butenes; oxidataive dehydrogenation; MoBi catalysts; oxygen mobility
- Issue Date
- Applied catalysis A, General
- VOL 431-432, 137-143
- BiMoFex oxide catalysts (x = 0–1.00) were prepared by co-precipitation and their catalytic activities in the
oxidative dehydrogenation of n-butenes were tested. X-ray diffraction (XRD) and Raman spectroscopy
showed that the main solid phases were composed of Bi3Mo2FeO12 as oxygen acceptor and Fe2(MoO4)3
as oxygen donor and the mixing of these phases enhanced catalytic activity. XRD patterns showed that
Fe2(MoO4)3 was reduced to FeMoO4 during the reaction. The peak temperature of programmed reduction
of 1-butene and successive oxidation (TPRO) was dependent on Fe contents in BiMoFex oxide catalysts
and was minimized at x = 0.65, which showed the greatest oxygen mobility. The peak position in the low
temperature region of TPRO profiles could be correlated with butene conversion and BD yield.
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