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<p>Isoalkanes are ideal gasoline components, and the isomerization reaction of light alkanes is the most effective way to increase the octane number of gasoline. Non-precious metal/zeolite catalysts are the mainstream bifunctional catalysts for alkane isomerization reactions, but there are still challenges in achieving high octane number components—multi-branched isoalkanes in isomerization reactions. In this article, Ni–heteropoly acid/zeolite alkane isomerization catalyst (Ni–HTA/Hβ) was prepared by impregnation method. Under optimized conditions, the conversion rate of <i>n</i>-hexane was 79.5%, the yield of isoalkanes was 78.7%, and the selectivity of isoalkanes was as high as 99.0%. In the product distribution, the Ni–HTA/Hβ catalyst can obtain more multi-branched isoalkanes, namely, 2,2-dimethylbutane and 2,3-dimethylbutane, with a total content of up to 19.2%, achieving the goal of further improving the yield of double-branched alkanes in C<sub>6</sub> alkane isomerization products.</p>

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Development of Ni/HTA/Hβ alkane isomerization catalyst with improved selectivity for multi-branched isoalkanes

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Lijun Zhu,
  • Guosheng Huang,
  • Shuo Liu,
  • Xiaohui Jing,
  • Junwei Yang,
  • Daohong Xia

摘要

Isoalkanes are ideal gasoline components, and the isomerization reaction of light alkanes is the most effective way to increase the octane number of gasoline. Non-precious metal/zeolite catalysts are the mainstream bifunctional catalysts for alkane isomerization reactions, but there are still challenges in achieving high octane number components—multi-branched isoalkanes in isomerization reactions. In this article, Ni–heteropoly acid/zeolite alkane isomerization catalyst (Ni–HTA/Hβ) was prepared by impregnation method. Under optimized conditions, the conversion rate of n-hexane was 79.5%, the yield of isoalkanes was 78.7%, and the selectivity of isoalkanes was as high as 99.0%. In the product distribution, the Ni–HTA/Hβ catalyst can obtain more multi-branched isoalkanes, namely, 2,2-dimethylbutane and 2,3-dimethylbutane, with a total content of up to 19.2%, achieving the goal of further improving the yield of double-branched alkanes in C6 alkane isomerization products.