Synthesis of Nano-catalysts by Induction Suspension Plasma Technology (SPS) for Fischer–Tropsch Reaction

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• 作者：James Aluha ; Kossi Bere ; Nicolas Abatzoglou…
• 刊名：Plasma Chemistry and Plasma Processing
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：36
• 期：5
• 页码：1325-1348
• 全文大小：5,000 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Mechanics
  Characterization and Evaluation Materials
  Mechanical Engineering
  Inorganic Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  
• 出版者：Springer Netherlands
• ISSN：1572-8986
• 卷排序：36

文摘

Nanometric catalysts were synthesized through induction suspension plasma technology (SPS) for application in the Fischer–Tropsch synthesis (FTS). Carbon-supported single metal catalysts (Co/C, Fe/C), bimetallic formulations (Co–Fe/C), and ternary (Co–Fe–Mo and Co–Fe–Ni) systems have been considered in this work. SPS has been selected because it simultaneously allows for: (1) atomizing and generating metallic nanoparticles; (2) creating particularly Fe carbides, which are important in Fe-based FTS reaction mechanism; (3) in situ production of the nanometric graphitic-carbon matrix; and (4) saving time in catalyst synthesis, limiting sample preparation steps and eliminating post synthesis treatment before use. Porosity measurements by the Brunauer–Emmett–Teller method indicate that the samples are essentially non-porous. The synthesized catalysts characterized by X-ray Diffraction analysis show the presence of both metallic and carbidic species. The graphitic-carbon matrix has substantial structural defects that make it partly amorphous. Scanning Electron Microscopy analysis coupled with Energy Dispersive X-ray Spectroscopy mapping shows uniform dispersion of the metal moieties in the carbon support. Analysis by Transmission Electron Microscopy imaging displays metal nanoparticles with mean particle size within the 9–15 nm range enveloped in the carbon matrix.KeywordsInduction plasmaSuspension plasmaCobalt–iron–carbon catalystFischer–Tropsch