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首页> 外文期刊>Fuel >Selectivity enhancement of CoMoS catalysts supported on tri-modal porous Al2O3 for the hydrodesulfurization of fluid catalytic cracking gasoline
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Selectivity enhancement of CoMoS catalysts supported on tri-modal porous Al2O3 for the hydrodesulfurization of fluid catalytic cracking gasoline

机译：三峰多孔Al2O3负载CoMoS催化剂对流化催化裂化汽油加氢脱硫的选择性增强

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摘要

To improve the selectivity performance of CoMoS catalysts applied to the hydrodesulfurization (HDS) of fluid catalytic cracking (FCC) gasoline, a series of CoMoS/Al2O3 catalysts was prepared with alumina of different pore structures, and their HDS performance was evaluated with a real FCC gasoline. This study indicated that CoMoS/Al2O3 catalysts prepared with micro-or meso-porous alumina possessed high HDS activity but low selectivity, whereas macro-porous alumina enhanced the selectivity of CoMoS catalysts. The enhanced HDS selectivity was due to the tuning of the MoS2 slabs and the weakening of the internal diffusion resistance. Based on the above results, the optimal CoMoS/Al2O3 catalyst was prepared with the alumina of the tri-modal pore distribution at approximately 5-8 nm, 15-20 nm, and 90-100 nm. The optimal catalyst displayed a balanced HDS activity and selectivity in contrast to the reference catalyst prepared with K- and P-modified Al2O3. (c) 2015 Elsevier Ltd. All rights reserved.
机译：为了提高用于流化催化裂化（FCC）汽油加氢脱硫（HDS）的CoMoS催化剂的选择性性能，制备了一系列具有不同孔结构的氧化铝的CoMoS / Al2O3催化剂，并用真实的FCC评估了它们的HDS性能。汽油。这项研究表明，用微孔或中孔氧化铝制备的CoMoS / Al2O3催化剂具有高HDS活性，但选择性低，而大孔氧化铝可提高CoMoS催化剂的选择性。 HDS选择性的提高归因于MoS2平板的调谐和内部扩散阻力的减弱。基于以上结果，使用三峰孔分布的氧化铝在约5-8 nm，15-20 nm和90-100 nm的氧化铝制备了最佳的CoMoS / Al2O3催化剂。与用K和P改性的Al2O3制备的参比催化剂相比，最佳催化剂显示出平衡的HDS活性和选择性。 （c）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2015年第1期|171-176|共6页
  • 作者

    Wang Tinghai; Fan Yu; Wang Xueli; Chou Lingjun; Lin Hong;

  • 作者单位

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China|Lanzhou Petrochem Res Ctr Petrochina, Lanzhou 730000, Peoples R China;

    China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China;

    Lanzhou Petrochem Res Ctr Petrochina, Lanzhou 730000, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China;

    Lanzhou Petrochem Res Ctr Petrochina, Lanzhou 730000, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    CoMoS/Al2O3; Pore structure; Internal diffusion; Gasoline; Hydrodesulfurization;

    机译：CoMoS / Al2O3;孔结构;内部扩散;汽油;加氢脱硫;

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