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Activity of Molybdenum Oxide Catalyst Supported on Al2O3, TiO2, and SiO2 Matrix in the Oxidative Dehydrogenation of n-Butane
Authors: Setnička Michal | Tisler Zdenek | Kubicka David | Bulánek Roman
Year: 2015
Type of publication: článek v odborném periodiku
Name of source: Topics in Catalysis
Publisher name: Springer
Place: Heidelberg
Page from-to: 866-876
Titles:
Language Name Abstract Keywords
cze Aktivita katalyzátorů na bázi oxidů molybdenu nanesených na Al2O3, TiO2 a SiO2 matrici v oxidativní dehydrogenaci n-butanu Tato práce je zaměřena na porovnání katalytické aktivity oxidů molybdenu nanesených na různých mezoporézních matricích Al2O3, TiO2 a SiO2 v ODH n-butanu. Všechny vzorky byly připraveny impregnací a charakterizovány pomocí ICP-EOS pro stanovení obsahu Mo, XRD a N2-adsorpcí pro stanovení morfologie a textury, H2-TPR a DR UV-VIS pro stanovení Mo druhů a NH3-TPD pro studium kyselosti. oxidy molybdenu; oxidativní dehydrogenace; n-butan; TiO2; Al2O3; silika
eng Activity of Molybdenum Oxide Catalyst Supported on Al2O3, TiO2, and SiO2 Matrix in the Oxidative Dehydrogenation of n-Butane The catalytic oxidative dehydrogenation (ODH) of light alkanes has great potential to be used for production of alkenes instead of classically used steam cracking of naphtha. We report for the first time a comparison of molybdenum oxide species supported on three different industrially relevant mesoporous supports-Al2O3, SiO2 and TiO2 in ODH of n-butane. All samples were prepared by wet impregnation and characterized by ICP-EOS for determination of molybdenum content, XRD and N-2-adsorption for study of morphology and texture, H-2-TPR and DR UV-vis spectroscopy for determination of molybdenum complex speciation and by NH3-TPD for study of acidity. All prepared materials were tested in n-butane ODH reaction at 540 degrees C and iso-conversion conditions. The molybdenum oxide supported on alumina exhibited the extraordinary high productivity (1.16 kg(prod) kg (-1)(cat) h(-1)) in ODH of n-butane which is one of the five highest C4-deh productivity values which were published for ODH of n-butane in open literature. Moreover, this catalyst exhibit high selectivity to 1,3-butadine in comparison with other catalysts tested in n-butane ODH. Molybdenum oxide; Oxidative dehydrogenation; n-Butane; TiO2; Al2O3; Silica

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