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Effects of cobalt loading, particle size, and calcination condition on Co/CNT catalyst performance in Fischer-Tropsch reactions

Akbarzadeh, O. and Mohd Zabidi, N.A. and Abdul Wahab, Y. and Hamizi, N.A. and Chowdhury, Z.Z. and Merican Aljunid Merican, Z. and Rahman, M.A. and Akhter, S. and Shalauddin, M. and Johan, M.R. (2019) Effects of cobalt loading, particle size, and calcination condition on Co/CNT catalyst performance in Fischer-Tropsch reactions. Symmetry, 11 (1).

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Abstract

The strong electrostatic adsorption (SEA) method was applied to the synthesis of a cobalt (Co) catalyst on a multi-walled carbon nanotube (CNT) support. In order to uptake more of the cobalt cluster with higher dispersion, the CNT was functionalized via acid and thermal treatment. The Co/CNT catalyst samples were characterized by a range of methods including the Brunauer-Emmet-Teller (BET) surface area analyzer, transmission electron microscopy (TEM), X-ray powder diffraction (XRD) analysis, atomic absorption spectroscopy (AAS), and H2-temperature programmed reduction (H2-TPR) analysis. The data from the TEM images revealed that the catalyst was highly dispersed over the external and internal walls of the CNT and that it demonstrated a narrow particle size of 6-8 nm. In addition, the data from the H2-TPR studies showed a lower reduction temperature (420 °C) for the pre-treated catalyst samples. Furthermore, a Fischer-Tropsch synthesis (FTS) reaction was chosen to evaluate the Co/CNT catalyst performance by using a fixed-bed microreactor at different parameters. Finally finding the optimum value of the cobalt loading percentage, particle size, and calcination conditions of Co/CNT catalyst resulted in a CO conversion and C5+ selectivity of 58.7 and 83.2, respectively. © 2018 by the authors.

Item Type:Article
Impact Factor:cited By 1
Departments / MOR / COE:Research Institutes > Institute for Contaminant Management
ID Code:22259
Deposited By: Ahmad Suhairi
Deposited On:28 Feb 2019 02:48
Last Modified:27 Mar 2019 01:53

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