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Abstract <p>The kinetics of the formation of methane condensation products in the absence of oxygen at 600°C was studied on 1% Pt/γ-Al<sub>2</sub>O<sub>3</sub> and 1% Pt/MgAlO<sub><i>x</i></sub> samples with similar platinum cluster sizes. In contrast to the reference sample 1% Pt/γ-Al<sub>2</sub>O<sub>3</sub>, removal of strongly adsorbed carbon-containing compounds accumulated during the reaction by oxidation at the same temperature completely restored the catalytic characteristics of 1% Pt/MgAlO<sub><i>x</i></sub> systems. The possibility of increasing the operation time of such catalysts in a cyclic mode with maximum productivity in terms of C<sub>2</sub>–C<sub>3</sub>-hydrocarbons and minimal formation of CO and CO<sub>2</sub> at the regeneration stage was demonstrated.</p>

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Conversion of CH4 into C2–C3 Hydrocarbons on Pt/MgAlOx Catalysts in a Cyclic Mode

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • L. G. Pinaeva,
  • O. B. Belskaya,
  • I. P. Prosvirin,
  • V. A. Likholobov,
  • A. S. Noskov

摘要

Abstract

The kinetics of the formation of methane condensation products in the absence of oxygen at 600°C was studied on 1% Pt/γ-Al2O3 and 1% Pt/MgAlOx samples with similar platinum cluster sizes. In contrast to the reference sample 1% Pt/γ-Al2O3, removal of strongly adsorbed carbon-containing compounds accumulated during the reaction by oxidation at the same temperature completely restored the catalytic characteristics of 1% Pt/MgAlOx systems. The possibility of increasing the operation time of such catalysts in a cyclic mode with maximum productivity in terms of C2–C3-hydrocarbons and minimal formation of CO and CO2 at the regeneration stage was demonstrated.