Synthesis and efficiency of Co and Co-Ru nano catalyst based on graphene in Fischer-Tropsch process

Subject Areas : The Application of Chemistry in Environment

Miresmaeil Masumi ¹

1 - عضو هیات علمی دانشگاه آزاد اسلامی واحد تهران شمال گروه مهندسی شیمی

Received: 2024-06-25 Accepted : 2024-08-15 Published : 2024-09-26

Keywords: Fischer-Tropsch synthesis, cobalt catalyst, cobalt-ruthenium catalyst, graphene nanoplates, fixed bed reactor,

Abstract :

In this research, to improve the efficiency and environmental sustainability of the Fischer-Tropsch process, graphene nanosheets were used as a base for the synthesis of cobalt catalysts. These catalysts were prepared by wet inoculation method and their properties were investigated by various techniques such as FTIR, ICP, BET, XRD, EDX, TPR and TEM. The effect of changing the weight percentage of cobalt (from 10% to 30%) on the activity of the catalysts was studied. The results showed that the catalyst containing 30% cobalt has the highest activity. For further optimization, 1% by weight of ruthenium was added to this catalyst. The performance of these catalysts was investigated in a fixed bed reactor under 25 bar pressure and temperatures of 220 and 240 degrees Celsius with synthesis gas flow. The results indicate that the use of graphene nanosheets as a catalyst base, in addition to improving the efficiency of the process, leads to the reduction of pollutant emissions and the production of cleaner fuels. Laboratory data showed that these catalysts help to improve carbon monoxide conversion, methane selectivity and product distribution and can have positive environmental impacts.

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