List of Articles Tropsch synthesis

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  1 - A Study of the adsorption of CO on cobalt nanostructures: Cubic and hexagonal crystalline phases
  Fatemeh Dolati ali nakhaeipoura vahidreza darugar zohre Dolati vagehe afkhamy
  In the present work, the adsorption energies and structures of carbon monoxide (CO) on cubic and hexagonal crystalline phases of cobalt nanoparticles has been evaluated using density functional theory (DFT) calculations. However, the general trend in Fischer- Tropsch sy More

  In the present work, the adsorption energies and structures of carbon monoxide (CO) on cubic and hexagonal crystalline phases of cobalt nanoparticles has been evaluated using density functional theory (DFT) calculations. However, the general trend in Fischer- Tropsch synthesis (FTS) activities on cobalt-based catalysts is reproduced by comparing adsorption energies. The catalysts with higher fractions of hcp phase exhibited higher conversion in FTS reaction than those cobalt fcc metallic phase. For evaluation of CO adsorption energies on cobalt surfaces, we have calculated the activation energy of adsorption of CO at 1 ML (ML=monolayers) on top of cobalt atoms on cubic and hexagonal crystalline phases of cobalt nanostructures. The results predicted that, the largest adsorption energies are found for the fcc crystalline phases and hcp surface adsorbed CO with lower energies. Since the lower energy of the adsorption of CO on cobalt hcp top sites may explain the higher activity of cobalt catalysts with hexagonal crystalline phases in FTS reaction. Manuscript profile
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  2 - Investigation of Products Distribution In Fischer-Tropsch Synthesis By Nano-sized Iron-based Catalyst
  Ali Mohajeri Yahya Zamani Laleh Shirazi
  10.22034/jna.2014.02.002
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  3 - Pilot scale study of Co-Fe-Ni nanocatalyst for CO hydrogenation in Fischer-Tropsch synthesis
  Hamid Reza Azizi Ali Akbar Mirzaei Razieh Sarani Massoud Kaykhaii
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  4 - Preparation and characterization of cobalt-manganese-cerium nanocatalyst in order to applying in the Fischer-Tropsch process and study the operating conditions on the activity of the catalyst
  Hesam Aldin Hashemzehi Ali Akbar Mirzaei Amin Behzadmehr
  10.30495/jacr.2021.682529
  One of the most important processes in the petrochemical industry is Fisher-Tropes synthesis. In this process, the synthesis gas, which mainly contains H2 and CO gases, is converted to a mixture of hydrocarbons. The Fischer-Tropsch process is a catalytic process that ca More

  One of the most important processes in the petrochemical industry is Fisher-Tropes synthesis. In this process, the synthesis gas, which mainly contains H2 and CO gases, is converted to a mixture of hydrocarbons. The Fischer-Tropsch process is a catalytic process that catalyst is an important and determining part of this process. Therefore, in this study, the cobalt-manganese-cerium tri-metal catalyst based on alumina (Al2O3) was prepared by the wet impregnation method. The optimal catalyst was identified using X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermal gravimetry analysis (TGA) techniques. Surface area of the catalyst was measured by BET method. The fabricated catalyst was used to perform the Fisher-Tropes process in a laboratory fixed-bed microreactor and the effect of operating parameters such as temperature, pressure, and feed ratio on the selectivity and activity of the catalyst were investigated. According to the results, a temperature of 300 °C, pressure  of 1 atm, and feed molar ratio of H2 / CO = 1.1 were selected as the optimal operating conditions of the catalyst.  Manuscript profile