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Abstract <p>The development of efficient catalysts for butene oligomerization is crucial for upgrading olefin feedstocks. Mesoporous Ni–Fe@γ-Al<sub>2</sub>O<sub>3</sub> catalysts with varying Ni/Fe ratios and supports were prepared using a co-impregnation method, and their catalytic activities in butene oligomerization were evaluated. Structural analysis revealed that Ni/Fe ratio = 0.6 with AlO<sub><i>x</i>−2</sub> support optimized textural properties (specific surface area = 234&#xa0;m<sup>2</sup>/g, pore volume = 0.27&#xa0;cm<sup>3</sup>/g). Catalytic performance was evaluated in a fixed-bed reactor at 100&#xa0;°C and 3.0&#xa0;MPa. The Ni/Fe–AlO<sub><i>x</i>−2</sub> catalyst demonstrated superior activity and stability: 68% butene conversion maintained for 210&#xa0;h, 92% selectivity toward C<sub>8</sub> and C<sub>12</sub> oligomers, minimal deactivation observed due to its uniform mesoporous structure (pore diameter = 6.0&#xa0;nm) and acid sites, which enhanced mass transfer and suppressed side reactions. Structure–activity relationships confirmed that Ni/Fe synergism and relatively uniform acid sites collectively promoted oligomerization pathways. Compared to other catalysts, Ni/Fe-AlO<sub><i>x</i>−2</sub> showed higher conversion rates, better selectivity and stability. This work establishes a design strategy for industrial catalysts by balancing porosity, acidity, and metal interactions, offering a viable solution for sustainable butene processing.</p> Graphical abstract <p></p>

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Effect of the textural properties of supported mesoporous Ni–Fe@γ-Al2O3 catalysts on butene oligomerization reaction performance

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • Ziyan Feng,
  • Mingwei Cui,
  • Jinjian Liu,
  • Yao Li,
  • Ran Zhang,
  • Honglei Li

摘要

Abstract

The development of efficient catalysts for butene oligomerization is crucial for upgrading olefin feedstocks. Mesoporous Ni–Fe@γ-Al2O3 catalysts with varying Ni/Fe ratios and supports were prepared using a co-impregnation method, and their catalytic activities in butene oligomerization were evaluated. Structural analysis revealed that Ni/Fe ratio = 0.6 with AlOx−2 support optimized textural properties (specific surface area = 234 m2/g, pore volume = 0.27 cm3/g). Catalytic performance was evaluated in a fixed-bed reactor at 100 °C and 3.0 MPa. The Ni/Fe–AlOx−2 catalyst demonstrated superior activity and stability: 68% butene conversion maintained for 210 h, 92% selectivity toward C8 and C12 oligomers, minimal deactivation observed due to its uniform mesoporous structure (pore diameter = 6.0 nm) and acid sites, which enhanced mass transfer and suppressed side reactions. Structure–activity relationships confirmed that Ni/Fe synergism and relatively uniform acid sites collectively promoted oligomerization pathways. Compared to other catalysts, Ni/Fe-AlOx−2 showed higher conversion rates, better selectivity and stability. This work establishes a design strategy for industrial catalysts by balancing porosity, acidity, and metal interactions, offering a viable solution for sustainable butene processing.

Graphical abstract