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首页> 外文期刊>New Journal of Chemistry >Effects of particle size on bifunctional Pt/SAPO-11 catalysts in the hydroisomerization of n-dodecane
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Effects of particle size on bifunctional Pt/SAPO-11 catalysts in the hydroisomerization of n-dodecane

机译：粒径对N-十二烷加氢异构化双官能Pt / sapo-11催化剂的影响

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摘要

The SAPO-11 zeolite is widely used in the hydroisomerization of n-paraffins due to its unique shape selectivity, and the particle size plays an important role in the catalytic performance. Herein, multi-scale SAPO-11 zeolites with different particle sizes (65 nm to 4.5 mu m) are successfully synthesized via a modified dry-gel conversion method by controlling the nucleation rate and the growth rate of the crystal. The resulting samples were characterized by XRD, SEM, N-2 adsorption desorption, NH3-TPD, Py-IR and Si-29 MAS NMR. These solid results indicate that the change in particle size of SAPO-11 has a large effect on its structure and acidity. Furthermore, the n-dodecane hydroisomerization reaction was investigated in this work, and the experimental results show that the prepared bifunctional Pt/SAPO-11-10% catalyst has the highest iso-dodecane yield (70.9%) with a conversion of 93.5% among all the samples, which could be ascribed to the synergistic effect between the suitable particle size and acid sites, which enhanced its catalytic performance.
机译：SAPO-11沸石由于其独特的形状选择性而广泛用于N-链烷烃的加氢异构化，并且粒度在催化性能中起重要作用。这里，通过控制含量和晶体的生长速率，通过改性的干凝胶转化方法成功地合成具有不同颗粒尺寸（65nm至4.5μm）的多尺寸Sapo-11沸石。通过XRD，SEM，N-2吸附解吸，NH3-TPD，Py-IR和Si-29MAMR表征得到的样品。这些固体结果表明SAPO-11的粒径变化对其结构和酸度具有很大的影响。此外，在该工作中研究了N-十二烷加氢异构化反应，实验结果表明，制备的双官能Pt / sapo-11-10％催化剂具有最高的异癸酸盐产率（70.9％），转化为93.5％所有样品可以归因于合适的粒度和酸位点之间的协同效应，这提高了其催化性能。

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  • 来源
    《New Journal of Chemistry》 |2020年第7期|共8页
  • 作者

    Ge Lixia; Yu Gan; Chen Xinqing; Li Wenqian; Xue Wenjie; Qiu Minghuang; Sun Yuhan;

  • 作者单位

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

    Chinese Acad Sci CAS Key Lab Low Carbon Convers Sci &

    Engn Shanghai Adv Res Inst Shanghai 201210 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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