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Abstract <p>The effect of the reaction mixture composition on the catalytic properties of Mo<sub>1</sub>V<sub>0.24</sub>Sb<sub>0.23</sub>Nb<sub>0.08</sub>Ce<sub>0.01</sub>O<sub><i>x</i></sub>/50 wt % SiO<sub>2</sub> catalysts in the oxidative dehydrogenation of ethane to ethylene at a temperature of 400–440°C has been studied. It has been shown that at a high ethane concentration in a C<sub>2</sub>H<sub>6</sub> : O<sub>2</sub> = 74 : 26 (vol %) and C<sub>2</sub>H<sub>6</sub> : O<sub>2</sub> = 80 : 20 (vol %) reaction mixture, the process productivity with respect to ethylene is 153−157 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({{{\text{g}}}_{{{{{\text{C}}}_{{\text{2}}}}{{{\text{H}}}_{{\text{6}}}}}}}\)</EquationSource> <!--CatInd2570039Zenkovets-m1--> </InlineEquation>/(kg<sub>cat</sub> h). The catalyst exhibits stable operation in highly concentrated mixtures at a temperature of 400−420°C. Therefore, oxidative ethane dehydrogenation can be run by recycling the reaction mixture at an ethane conversion of 20−30%.</p>

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Effect of the Reaction Mixture Composition on the Catalytic Properties of MoVSbNbСeOx/SiO2 Catalysts in the Oxidative Dehydrogenation of Ethane to Ethylene

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • G. A. Zenkovets,
  • V. M. Bondareva,
  • V. I. Sobolev,
  • A. A. Shutilov

摘要

Abstract

The effect of the reaction mixture composition on the catalytic properties of Mo1V0.24Sb0.23Nb0.08Ce0.01Ox/50 wt % SiO2 catalysts in the oxidative dehydrogenation of ethane to ethylene at a temperature of 400–440°C has been studied. It has been shown that at a high ethane concentration in a C2H6 : O2 = 74 : 26 (vol %) and C2H6 : O2 = 80 : 20 (vol %) reaction mixture, the process productivity with respect to ethylene is 153−157 \({{{\text{g}}}_{{{{{\text{C}}}_{{\text{2}}}}{{{\text{H}}}_{{\text{6}}}}}}}\) /(kgcat h). The catalyst exhibits stable operation in highly concentrated mixtures at a temperature of 400−420°C. Therefore, oxidative ethane dehydrogenation can be run by recycling the reaction mixture at an ethane conversion of 20−30%.