Oxidative dehydrogenation of n-butenes to 1,3-butadiene over BiMoFe0.65Px catalysts: effect of phosphorous contents

Title
Oxidative dehydrogenation of n-butenes to 1,3-butadiene over BiMoFe0.65Px catalysts: effect of phosphorous contents
Authors
박중훈노혜령박지원노경호정광덕신채호
Keywords
Oxidative dehydrogenation; BiMoFe0.65Px oxide catalyst; 1,3-Butadiene; NH3-TPD; 1-Butene TPD
Issue Date
2011-12
Publisher
Research on chemical intermediates
Citation
VOL 37, NO 9, 1125-1134
Abstract
A series of BiMoFe0.65Px oxide catalysts with varying phosphorous contents from 0.0 to 0.6 mol ratio were prepared by a co-precipitation method, and oxidative dehydrogenation (ODH) was carried out to produce 1,3-butadiene (BD) from n-butenes. The physico-chemical properties of the oxide catalysts were characterized by X-ray diffraction (XRD), Raman spectroscopy, N2 sorption, and NH3 and 1-butene temperature-programmed desorption (TPD). Among the catalysts studied here, BiMoFe0.65P0.1 oxide catalyst showed the highest conversion and selectivity to BD. From the result of 1-butene TPD, the higher catalytic activity is related to the amount of weakly bounded intermediate and the desorbing temperature of strongly bounded intermediates. Also, the higher catalytic activity likely originates from the acidity of the BiMoFe0.65P0.1 oxide catalyst; its acidity was higher than that of phosphorous-free oxide catalyst and further contained other oxide catalysts. BiMoFe0.65P0.1 oxide catalyst is stable and no significant deactivation for 100 h ODH reaction was shown.
URI
http://pubs.kist.re.kr/handle/201004/41976
ISSN
0922-6168
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KIST Publication > Article
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