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Role of mesopores in Co/ZSM-5 for the direct synthesis of liquid fuel by Fischer–Tropsch synthesis

Abstract

In a complex reaction system, in which gas, liquid, and solid catalysts work together, understanding the impact of mass transfer that varies with the catalyst pore structure is very challenging but also essential to design selective catalysts. We investigated the effect of mesopore introduced into bi-functional Co/ZSM-5 catalysts for direct production of liquid fuel by low-temperature Fischer–Tropsch synthesis (FTS). The influence of mesopores on the textural properties, Co dispersion, zeolite crystallinity, density of acid sites, and resulting FTS performance were studied in detail. The presence of mesopores facilitated the dispersion of Co nanoparticles and the regulation of acidity, affording high CO conversion and moderate degree of isomerization. In addition, close proximity between FTS active sites and acid functionalized sites could be achieved by the introduction of mesopores. However, the relationship between the structural parameter and liquid fuel productivity suggested that the mesopores did not reduce the mass transfer resistance of the reactants and intermediates during the FTS reaction.

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Publication details

The article was accepted on 05 Oct 2018 and first published on 08 Oct 2018


Article type: Paper
DOI: 10.1039/C8CY01931B
Citation: Catal. Sci. Technol., 2018, Accepted Manuscript
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    Role of mesopores in Co/ZSM-5 for the direct synthesis of liquid fuel by Fischer–Tropsch synthesis

    J. Min, S. Kim, G. Kwak, Y. T. Kim, S. J. Han, Y. Lee, K. Jun and S. K. Kim, Catal. Sci. Technol., 2018, Accepted Manuscript , DOI: 10.1039/C8CY01931B

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