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Open AccessArticle

Effect of Manganese on Co–Mn/CNT Bimetallic Catalyst Performance in Fischer–Tropsch Reaction

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Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
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Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak 32610, Malaysia
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Department of Industrial and Manufacturing Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
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Department of Mechanical Engineering, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA
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Functional Omics and Bioprocess Development Laboratory, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
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Author to whom correspondence should be addressed.
Symmetry 2019, 11(11), 1328; https://doi.org/10.3390/sym11111328
Received: 25 June 2019 / Revised: 29 July 2019 / Accepted: 1 August 2019 / Published: 24 October 2019
(This article belongs to the Special Issue Nanocatalysis and Symmetry in Chemistry)
Cobalt (Co) catalyst is supported by carbon nanotubes (CNT) using a strong electrostatic adsorption (SEA) method. To promote activity and selectivity as well as find the optimum loading percentage and its effect on catalyst performance, manganese (Mn) has been added to the Co/CNT catalyst. Samples were characterized by a scanning electron microscope (SEM-EDX), transmission electron microscope (TEM), hydrogen temperature programmed reduction (H2-TPR), Zeta potential, Brunauer–Emmett–Teller (BET) analysis, X-ray diffraction (XRD), and X-ray spectroscopy (XPS). TEM images illustrated an intake of metal particles which were highly dispersed, having a narrow particle size distribution of 6–8 nm to the external and internal CNT support. H2-TPR showed a lower temperature reduction with Mn at 420 °C for Fischer–Tropsch synthesis (FTS) reaction. The Co–Mn/CNT catalyst performance test for FTS was performed at a temperature of 240 °C in a fixed-bed micro-reactor at a pressure of 2.0 MPa. The addition of manganese resulted in a lower methane selectivity and a higher C5+ product with an optimum percentage of 5% of manganese. CO conversion was 86.6% and had a C5+ selectivity of 81.5%, which was higher than the catalysts obtained using only Co on pretreated CNT. View Full-Text
Keywords: carbon nanotubes; thermal treatment; cobalt manganese; Fischer–Tropsch; catalyst; acid treatment carbon nanotubes; thermal treatment; cobalt manganese; Fischer–Tropsch; catalyst; acid treatment
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Akbarzadeh, O.; Mohd Zabidi, N.A.; Aljunid Merican, Z.M.; Sagadevan, S.; Kordijazi, A.; Das, S.; Amani Babadi, A.; Ab Rahman, M.; Hamizi, N.A.; Abdul Wahab, Y.; Rafie Johan, M. Effect of Manganese on Co–Mn/CNT Bimetallic Catalyst Performance in Fischer–Tropsch Reaction. Symmetry 2019, 11, 1328.

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