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

doi:10.1016/S1872-2067(15)60840-3

Abstract

Abstract:

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.

Key words: Fischer-Tropsch synthesis, Co catalysts, Carbon nanotubes, Size dependent parameters, Kinetics

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.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(15)60840-3

https://www.cjcatal.com/EN/Y2015/V36/I8/1372

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