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Abstract <p>A series of platinum catalysts were synthesized using Al<sub>2</sub>O<sub>3</sub> supports modified with Na<sup>+</sup> and Mg<sup>2+</sup> cations (2 wt %). The phase compositions, textural properties, acidity, and catalytic performance of these catalysts in the non-oxidative dehydrogenation of propane were characterized by X-ray diffraction (XRD), low-temperature nitrogen adsorption–desorption, and temperature-programmed desorption of ammonia (NH<sub>3</sub>-TPD) and carbon dioxide (CO<sub>2</sub>-TPD). The catalytic activity decreased in the order: 2Mg/Al<sub>2</sub>O<sub>3</sub> &gt; Al<sub>2</sub>O<sub>3</sub> &gt; 2Na/Al<sub>2</sub>O<sub>3</sub>. The study demonstrates a correlation between the acid–base properties of the catalyst supports and the propane conversion pathway during dehydrogenation.</p>

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Effect of Support Modifier on Pt/Al2O3 Catalytic Performance in Propane Dehydrogenation

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • L. N. Stepanova,
  • A. A. Nepomnyashchii,
  • R. M. Mironenko,
  • O. V. Gorbunova,
  • T. I. Gulyaeva,
  • I. V. Muromtsev

摘要

Abstract

A series of platinum catalysts were synthesized using Al2O3 supports modified with Na+ and Mg2+ cations (2 wt %). The phase compositions, textural properties, acidity, and catalytic performance of these catalysts in the non-oxidative dehydrogenation of propane were characterized by X-ray diffraction (XRD), low-temperature nitrogen adsorption–desorption, and temperature-programmed desorption of ammonia (NH3-TPD) and carbon dioxide (CO2-TPD). The catalytic activity decreased in the order: 2Mg/Al2O3 > Al2O3 > 2Na/Al2O3. The study demonstrates a correlation between the acid–base properties of the catalyst supports and the propane conversion pathway during dehydrogenation.