Role of silica-alumina catalyst texture in the reaction of propane oxidative dehydrogenation in the presence of sulfur dioxide View Full Text


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Article Info

DATE

2000-07

AUTHORS

I. G. Danilova, A. S. Ivanova

ABSTRACT

The effects of preparation conditions, component ratio, and pretreatment temperature (1000–1550‡C) of silica-alumina samples on their phase composition, texture characteristics, and catalytic properties are studied in the reaction of the oxidative dehydrogenation of propane by sulfur dioxide. It is shown that the samples contain individual silicon and aluminum oxides. The product of their interaction (mullite) is formed only at 1550°C. Mesoporous and macroporous catalysts with monoand polydispersed pore distributions over sizes are obtained. It is found that the porous structure of the catalyst plays a key role in the process of the oxidative dehydrogenation of propane in the presence of sulfur dioxide at 600–700°C. The apparent rate of propylene formation increases with an increase in the pore volume with radii between 10 and 100 nm. Propane is transformed into propylene more selectively on the catalyst where the pores with radii of 10–100 nm dominate; narrower pores (< 10 nm) are favorable for the formation of coke and complete oxidation products. More... »

PAGES

566-571

References to SciGraph publications

  • 1988-03. Propane dehydrogenation by SO2 in the presence of carbon in REACTION KINETICS AND CATALYSIS LETTERS
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/bf02756077

    DOI

    http://dx.doi.org/10.1007/bf02756077

    DIMENSIONS

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