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<p>To efficiently convert n-alkanes into their isomers, a series of hierarchical SAPO- 11-based catalysts were synthesized using the carbon materials as hard templates. The hydrophilicity of carbon materials influences their dispersion in the synthetic gel of SAPO- 11. Carbon nanotubes (CN) with different hydrophilicity were obtained by the treatment of sodium hydroxide (SC) and nitric acid (AC). Among them, AC possesses the most oxygen-containing functional groups and the best hydrophilicity, and the SAPO- 11 molecular sieve synthesized using it as the template exhibits the smallest particle size and the largest mesopore volume. Additionally, its corresponding Ni-based catalyst presents the highest conversion (75.5%) and isomer selectivity (89.4%) at 320 °C, 2 MPa, 4&#xa0;h<sup>−1</sup>, and a H<sub>2</sub> to n-decane volume ratio of 667.</p>

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Synthesis of hierarchical SAPO- 11 using carbon materials with varying hydrophilicity as templates for the hydroisomerization of n-decane to its branched isomers

  • 期刊论文

  • 发表日期：

    2025年4月9日

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  • Chenglong Wen,
  • Wenwen Shi,
  • Mohong Lu,
  • Jundong Xu,
  • Weihong Zhang,
  • Jie Zhu,
  • Mingshi Li,
  • Chunshan Song,
  • Xiaosong Lu

摘要

To efficiently convert n-alkanes into their isomers, a series of hierarchical SAPO- 11-based catalysts were synthesized using the carbon materials as hard templates. The hydrophilicity of carbon materials influences their dispersion in the synthetic gel of SAPO- 11. Carbon nanotubes (CN) with different hydrophilicity were obtained by the treatment of sodium hydroxide (SC) and nitric acid (AC). Among them, AC possesses the most oxygen-containing functional groups and the best hydrophilicity, and the SAPO- 11 molecular sieve synthesized using it as the template exhibits the smallest particle size and the largest mesopore volume. Additionally, its corresponding Ni-based catalyst presents the highest conversion (75.5%) and isomer selectivity (89.4%) at 320 °C, 2 MPa, 4 h−1, and a H2 to n-decane volume ratio of 667.