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Preparation of cobalt-ruthenium nanocatalysts supported on nitrogen-doped graphene aerogel and carbon nanotubes in Fischer-Tropsch synthesis

Rezaei Kafrani, M ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1016/j.arabjc.2023.104914
  3. Publisher: Elsevier B.V , 2023
  4. Abstract:
  5. In this study, cobalt-ruthenium nanocatalysts supported on nitrogen-doped graphene aerogel (NGA) and carbon nanotubes (CNT) were synthesized using the wet impregnation method for Fischer-Tropsch process with a cobalt to ruthenium ratio of 1:50. The synthesized catalysts underwent various characterizations such as FTIR, ICP, BET, XRD, EDX, TPR and TEM. The performance of the synthesized catalysts was compared to that of a cobalt-ruthenium nanostructured catalyst supported on NGA and CNTs. The catalysts were evaluated in a fixed-bed reactor at 25 bar, with a gas ratio H2/CO: 2 and Gas Hourly Space Velocity (GHSV) 10,000 mlg-1h-1, at temperatures of 260 °C and 280 °C. The use of NGA as a cobalt catalyst support led to a 70.5% conversion of carbon monoxide and higher methane selectivity. Conversely, the use of CNTs led to 63.7% conversion of carbon monoxide and higher selectivity towards C5 production. © 2023 The Author(s)
  6. Keywords:
  7. Carbon nanotube ; CO conversion ; Cobalt-ruthenium nanocatalysts ; Fischer-Tropsch ; Nitrogen-doped graphene aerogel
  8. Source: Arabian Journal of Chemistry ; Volume 16, Issue 8 , 2023 ; 18785352 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1878535223003763