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Citation: Ali Nakhaei Pour, Elham Hosaini, Mohammad Izadyar, Mohammad Reza Housaindokht. Particle size effects in Fischer-Tropsch synthesis by Co catalyst supported on carbon nanotubes[J]. Chinese Journal of Catalysis, ;2015, 36(8): 1372-1378. doi: 10.1016/S1872-2067(15)60840-3 shu

Particle size effects in Fischer-Tropsch synthesis by Co catalyst supported on carbon nanotubes

1.
Department of Chemistry, Ferdowsi University of Mashhad, P.O. Box: 9177948974, Mashhad, Iran

Corresponding author: Ali Nakhaei Pour,
Received Date: 18 February 2015
Available Online: 19 March 2015

The effect of Co particle size on the Fischer-Tropsch synthesis (FTS) activity of carbon nanotube (CNT)-supported Co catalysts was investigated. Microemulsion (using water-to-surfactant molar ratios of 2 to12) and impregnation techniques were used to prepare catalysts with different Co particle sizes. Kinetic studies were performed to understand the effect of Co particle size on catalytic activity. Size-dependent kinetic parameters were developed using a thermodynamic method, to evaluate the structural sensitivity of the CNT-supported Co catalysts. The size-independent FTS reaction rate constant and size-independent adsorption parameter increased with increasing reaction temperature. The Polani parameter also depended on catalyst particle size, because of changes in the catalyst surface coverage.
- Fischer-Tropsch synthesis,
- Co catalysts,
- Carbon nanotubes,
- Size dependent parameters,
- Kinetics
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