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Abstract <p>Two sets of CrO<sub><i>x</i></sub>–SBA-15 catalysts are synthesized by the different methods, namely, coprecipitation with a support and incipient wetness impregnation, while varying the chromium content in the catalyst in a range of 3–7 wt %. The synthesized materials are studied by the nitrogen adsorption, UV–Vis diffuse reflectance spectroscopy, and diffuse reflectance infrared Fourier transform spectroscopy methods using CD<sub>3</sub>CN as a probe molecule. In the presence of a 3 wt % Cr–SiO<sub>2</sub> catalyst synthesized by coprecipitation, a propylene selectivity of 78% at a propane conversion of 14% at 600°C is achieved.</p>

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Effect of the Textural Characteristics of the Support on the Activity of Chromium Oxide Catalysts in the Propane Dehydrogenation Reaction in the Presence of CO2

  • 期刊论文

  • 发表日期：

    2025年6月15日

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  • M. A. Tedeeva,
  • M. Yu. Mashkin,
  • A. A. Andresyuk,
  • P. V. Pribytkov,
  • A. A. Medvedev,
  • O. P. Tkachenko,
  • G. I. Kapustin,
  • S. F. Dunaev,
  • A. L. Kustov

摘要

Abstract

Two sets of CrOx–SBA-15 catalysts are synthesized by the different methods, namely, coprecipitation with a support and incipient wetness impregnation, while varying the chromium content in the catalyst in a range of 3–7 wt %. The synthesized materials are studied by the nitrogen adsorption, UV–Vis diffuse reflectance spectroscopy, and diffuse reflectance infrared Fourier transform spectroscopy methods using CD3CN as a probe molecule. In the presence of a 3 wt % Cr–SiO2 catalyst synthesized by coprecipitation, a propylene selectivity of 78% at a propane conversion of 14% at 600°C is achieved.