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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 15, 2015
Accepted December 4, 2015

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fischer-Tropsch synthesis on the cobalt impregnated catalyst using carbon-coated Ni/SiO2

Hyun-Mo Koo Gui Young Han Jong Wook Bae^†

School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, Gyeonggi-do 16419, Korea

finejw@skku.edu

Korean Journal of Chemical Engineering, May 2016, 33(5), 1565-1570(6), 10.1007/s11814-015-0269-6

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Abstract

Carbon-coated Ni/SiO2 prepared by dry reforming of CH4 with CO2 was applied for the preparation of the cobalt-based Fischer-Tropsch synthesis (FTS) catalyst with 20 wt%Co to elucidate the metal-support interaction to FTS activity after carbon depositions on the Ni/SiO2. The deposited carbons on the reforming catalyst of Ni/SiO2, which were mainly in the form of filamentous or encapsulated carbons, largely increased CO conversion compared with the fresh Ni/SiO2 without a significant variation of hydrocarbon distributions. The deposited carbons on the Ni/SiO2 play an important role in increasing the reducibility of cobalt oxides due to a mitigated metal-support interaction. The enhanced catalytic activity during FTS reaction is mainly attributed to the proper modification of the Ni/SiO2 surfaces with encapsulated carbons on the exposed nickel surfaces, which largely alters the reducibility of cobalt oxides by reducing the interaction of cobalt particles with the carbon-coated Ni/SiO2 surfaces.

Keywords

Fischer-Tropsch Synthesis (FTS) Cobalt Ni/SiO2 Carbon Deposition from Dry Reforming Metal-support Interaction

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