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Abstract <p>A set of Ni–Mo bimetallic catalysts based on Ni/ZSM-23 with an initial Ni content of 5 wt % has been synthesized. The catalysts have been tested in the hydrotreating of a mixture of fatty acids (C<sub>16</sub>–C<sub>18</sub>) in a flow reactor at a temperature of 300°C, a pressure of 2.5 MPa, and WHSV = 8.4 h<sup>−1</sup>. The effect of the metal ratio on the activity, isoalkane selectivity, and stability of the catalysts in the hydrotreating of a fatty acid mixture has been shown. The highest deoxygenating capacity and the highest isoalkane yield have been found in the presence of a catalyst with a Mo/(Ni + Mo) ratio of 0.25, in which, according to XPS, the Mo/(Ni + Mo) ratio on the surface is 0.4.</p>

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Effect of Mo/(Ni + Mo) Ratio on the Activity and Selectivity of Ni–Mo/ZSM-23 Catalysts in the Hydrotreating of a Fatty Acid Mixture

  • 期刊论文

  • 发表日期：

    2025年7月31日

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  • K. S. Kovalevskaya,
  • R. G. Kukushkin,
  • O. O. Zaikina,
  • V. O. Rodina,
  • T. V. Larina,
  • T. S. Glazneva,
  • A. A. Saraev,
  • V. A. Yakovlev

摘要

Abstract

A set of Ni–Mo bimetallic catalysts based on Ni/ZSM-23 with an initial Ni content of 5 wt % has been synthesized. The catalysts have been tested in the hydrotreating of a mixture of fatty acids (C16–C18) in a flow reactor at a temperature of 300°C, a pressure of 2.5 MPa, and WHSV = 8.4 h−1. The effect of the metal ratio on the activity, isoalkane selectivity, and stability of the catalysts in the hydrotreating of a fatty acid mixture has been shown. The highest deoxygenating capacity and the highest isoalkane yield have been found in the presence of a catalyst with a Mo/(Ni + Mo) ratio of 0.25, in which, according to XPS, the Mo/(Ni + Mo) ratio on the surface is 0.4.