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首页> 外文期刊>Applied Surface Science >Effect of Ni and noble metals (Ru, Pd and Pt) on performance of bifunctional MoP/SiO2 for hydroconversion of methyl laurate
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Effect of Ni and noble metals (Ru, Pd and Pt) on performance of bifunctional MoP/SiO2 for hydroconversion of methyl laurate

机译：镍和贵金属（Ru，Pd和Pt）对双官能MoP / SiO2对月桂酸甲酯加氢转化性能的影响

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摘要

SiO2 supported bifunctional MoP catalysts modified with different metal promoters (Ni, Ru, Pd, Pt), where Mo/Ni and Mo/M(M = Ru, Pd and Pt) atomic ratios was respectively 10 and 40, were prepared by TPR method from the phosphate precursors. It was found that the introduction of metal promoters facilitated the reduction of phosphate precursor and enhanced the dispersion of MoP. However, the MoP catalyst acidity was scarcely influenced by the small amount of metal promoters. In the hydroconversion of methyl laurate, the promoters enhanced the MoP catalyst activity for conversion of methyl laurate and hydrogenation of alkenes (intermediate), but reduced isomerization ability. Among the promoters, Ru was an optimum to decrease selectivity to alkenes while maintain high selectivity to iso-alkanes, and Mo40RuP showed better stability than MoP. At 380 degrees C and 3.0 MPa, the conversion of methyl laurate, the total selectivity to C11 and C12 hydrocarbons and the selectivity to iso-alkanes maintained at 100%, similar to 94% and similar to 30% on Mo40RuP during 102 h, respectively. The good stability of Mo40RuP is ascribed to that the presence of Ru prevented the sintering of MoP particles and suppressed carbon deposition. (C) 2017 Elsevier B.V. All rights reserved.
机译：通过TPR法制备了以不同的金属助催化剂（Ni，Ru，Pd，Pt）改性的SiO2负载双功能MoP催化剂，其中Mo / Ni和Mo / M（M = Ru，Pd和Pt）的原子比分别为10和40。从磷酸盐的前体。发现金属助催化剂的引入促进了磷酸盐前体的还原并增强了MoP的分散。但是，MoP催化剂的酸度几乎不受少量金属助催化剂的影响。在月桂酸甲酯的加氢转化中，助催化剂增强了MoP催化剂的活性，以促进月桂酸甲酯的转化和烯烃的氢化（中间体），但异构化能力降低。在这些促进剂中，Ru最适合于降低对烯烃的选择性，同时保持对异烷烃的高选择性，并且Mo40RuP的稳定性优于MoP。在380°C和3.0 MPa的条件下，在102 h内，月桂酸甲酯的转化率，对C11和C12烃的总选择性以及对异烷烃的选择性分别保持在100％，相似的94％和相似的30％ 。 Mo 40 RuP的良好稳定性归因于Ru的存在阻止了MoP颗粒的烧结并抑制了碳沉积。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第31期|511-522|共12页
  • 作者

    Nie Ziyang; Zhang Zhena; Chen Jixiang;

  • 作者单位

    Tianjin Univ, Sch Chem Engn & Technol, Dept Catalysis Sci & Engn, Tianjin Key Lab Appl Catalysis Sci & Technol, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Dept Catalysis Sci & Engn, Tianjin Key Lab Appl Catalysis Sci & Technol, Tianjin 300072, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Dept Catalysis Sci & Engn, Tianjin Key Lab Appl Catalysis Sci & Technol, Tianjin 300072, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Bifunctional catalyst; Molybdenum phosphide; Metal promoters; Hydrodeoxygenation; Isomerization; Methyl laurate;

    机译：双功能催化剂;磷化钼;金属助催化剂;加氢脱氧;异构化;月桂酸甲酯;

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