Staff View: Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer

Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction

Multiwalled carbon nanotubes (CNT) supported cobalt oxide was prepared as a catalyst by strong electrostatic adsorption (SEA) method. The CNT support was initially acid- and thermal-treated in order to functionalize the support to uptake more Co clusters. The Co/CNT were characterized by a range of...

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Main Authors:	Akbarzadeh, Omid, Mohd Zabidi, Noor Asmawati, Hamizi, Nor Aliya, Wahab, Yasmin Abdul, Merican, Zulkifli Merican Aljunid, Yehya, Wageeh Abdulhadi, Akhter, Shamima, Shalauddin, Md, Rasouli, Elisa, Johan, Mohd Rafie
Format:	Article
Published:	MDPI 2019
Subjects:	QD Chemistry
Online Access:	http://eprints.um.edu.my/24378/ https://doi.org/10.3390/sym11010050
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spelling	my.um.eprints.243782020-05-27T04:45:11Z http://eprints.um.edu.my/24378/ Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction Akbarzadeh, Omid Mohd Zabidi, Noor Asmawati Hamizi, Nor Aliya Wahab, Yasmin Abdul Merican, Zulkifli Merican Aljunid Yehya, Wageeh Abdulhadi Akhter, Shamima Shalauddin, Md Rasouli, Elisa Johan, Mohd Rafie QD Chemistry Multiwalled carbon nanotubes (CNT) supported cobalt oxide was prepared as a catalyst by strong electrostatic adsorption (SEA) method. The CNT support was initially acid- and thermal-treated in order to functionalize the support to uptake more Co clusters. The Co/CNT were characterized by a range of analytical methods including transmission electron microscopy (TEM), temperature programmed reduction with hydrogen (H2-TPR), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, atomic absorption spectroscopy (AAS), Zeta sizer particle size analysis and Brunauer-Emmett-Teller (BET) surface area analysis. TEM images showed cobalt particles were highly dispersed and impregnated at both exterior and interior walls of the CNT support with a narrow particle size distribution of 6-8 nm. In addition, the performance of the synthesized Co/CNT catalyst was tested using Fischer-Tropsch synthesis (FTS) reaction which was carried out in a fixed-bed micro-reactor. H2-TPR profiles indicated the lower reduction temperature of 420 °C was required for the FTS reaction. The study revealed that cobalt is an effective metal for Co/CNT catalysts at pH 14 and at 900 °C calcination temperature. Furthermore, FTS reaction results showed that CO conversion and C5+ selectivity were recorded at 58.7% and 83.2% respectively, which were higher than those obtained using a Co/CNT catalyst which pre-treated at a lower thermal treatment temperature and pH. © 2019 by the authors. MDPI 2019 Article PeerReviewed Akbarzadeh, Omid and Mohd Zabidi, Noor Asmawati and Hamizi, Nor Aliya and Wahab, Yasmin Abdul and Merican, Zulkifli Merican Aljunid and Yehya, Wageeh Abdulhadi and Akhter, Shamima and Shalauddin, Md and Rasouli, Elisa and Johan, Mohd Rafie (2019) Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction. Symmetry, 11 (1). p. 50. ISSN 2073-8994 https://doi.org/10.3390/sym11010050 doi:10.3390/sym11010050
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QD Chemistry
spellingShingle	QD Chemistry Akbarzadeh, Omid Mohd Zabidi, Noor Asmawati Hamizi, Nor Aliya Wahab, Yasmin Abdul Merican, Zulkifli Merican Aljunid Yehya, Wageeh Abdulhadi Akhter, Shamima Shalauddin, Md Rasouli, Elisa Johan, Mohd Rafie Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
description	Multiwalled carbon nanotubes (CNT) supported cobalt oxide was prepared as a catalyst by strong electrostatic adsorption (SEA) method. The CNT support was initially acid- and thermal-treated in order to functionalize the support to uptake more Co clusters. The Co/CNT were characterized by a range of analytical methods including transmission electron microscopy (TEM), temperature programmed reduction with hydrogen (H2-TPR), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, atomic absorption spectroscopy (AAS), Zeta sizer particle size analysis and Brunauer-Emmett-Teller (BET) surface area analysis. TEM images showed cobalt particles were highly dispersed and impregnated at both exterior and interior walls of the CNT support with a narrow particle size distribution of 6-8 nm. In addition, the performance of the synthesized Co/CNT catalyst was tested using Fischer-Tropsch synthesis (FTS) reaction which was carried out in a fixed-bed micro-reactor. H2-TPR profiles indicated the lower reduction temperature of 420 °C was required for the FTS reaction. The study revealed that cobalt is an effective metal for Co/CNT catalysts at pH 14 and at 900 °C calcination temperature. Furthermore, FTS reaction results showed that CO conversion and C5+ selectivity were recorded at 58.7% and 83.2% respectively, which were higher than those obtained using a Co/CNT catalyst which pre-treated at a lower thermal treatment temperature and pH. © 2019 by the authors.
format	Article
author	Akbarzadeh, Omid Mohd Zabidi, Noor Asmawati Hamizi, Nor Aliya Wahab, Yasmin Abdul Merican, Zulkifli Merican Aljunid Yehya, Wageeh Abdulhadi Akhter, Shamima Shalauddin, Md Rasouli, Elisa Johan, Mohd Rafie
author_facet	Akbarzadeh, Omid Mohd Zabidi, Noor Asmawati Hamizi, Nor Aliya Wahab, Yasmin Abdul Merican, Zulkifli Merican Aljunid Yehya, Wageeh Abdulhadi Akhter, Shamima Shalauddin, Md Rasouli, Elisa Johan, Mohd Rafie
author_sort	Akbarzadeh, Omid
title	Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
title_short	Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
title_full	Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
title_fullStr	Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
title_full_unstemmed	Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction
title_sort	effect of ph, acid and thermal treatment conditions on co/cnt catalyst performance in fischer–tropsch reaction
publisher	MDPI
publishDate	2019
url	http://eprints.um.edu.my/24378/ https://doi.org/10.3390/sym11010050
_version_	1669007997213343744
score	13.211869

Effect of pH, Acid and Thermal Treatment Conditions on Co/CNT Catalyst Performance in Fischer–Tropsch Reaction

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