Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis

A. S. Abdulkareem, B. Suleiman, S. O.E. Ajamah, I. A. Mohammed, M. T. Bankole, A. S. Afolabi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This study reports the preparation of monometallic (cobalt) catalyst supported on calcium carbonate for the synthesis of carbon nanotubes (CNTs). The catalyst was synthesized using wet impregnation method and optimized using factorial design of experiment to determine the effects of synthesis conditions (stirring speed, drying temperature, drying time and mass of the support) on the catalyst (Co/CaC03) yield. The catalyst best yield after calcination was 87.8% at stirring speed, drying temperature, drying time and mass of support of 700 rpm, 120°C, 7 hours and 5.5 g respectively. The selected best yield of the produced catalyst was characterized using, SEM/EDX, XRD and TGA to determine its morphology, crystallinity and thermal stability respectively. FTIR was also used to determine the functional groups present in the catalyst. The characterization result showed that the catalyst produced is thermally stable with about 0.034% weight loss at 808.3°C indicating that the catalyst will be suitable for the synthesis of CNT. The catalyst was utilized in a CVD reactor to synthesize carbon nanotubes by investigating the influence of carbon source (acetylene) flow rate on the yield of CNTs. The results obtained revealed that the highest yield of 27% of CNTs was obtained at acetylene flow rate of 90 ml/min. The raw CNTs were analyzed and the results obtained revealed that they were thermally stable with specific surface area of 389.4 m2/g. Meanwhile, the TEM result showed that the synthesized CNTs were multiwalled carbon nanotubes. It can be therefore inferred from the results of various analyses conducted that the prepared monometallic (Co) catalyst on CaCOj support is suitable for the synthesis of CNTs.

Original languageEnglish
Title of host publicationWCECS 2016 - World Congress on Engineering and Computer Science 2016
EditorsWarren S. Grundfest, Craig Douglas, S. I. Ao
PublisherNewswood Limited
Pages570-575
Number of pages6
Volume2226
ISBN (Electronic)9789881404824
Publication statusPublished - Jan 1 2016
Event2016 World Congress on Engineering and Computer Science, WCECS 2016 - San Francisco, United States
Duration: Oct 19 2016Oct 21 2016

Other

Other2016 World Congress on Engineering and Computer Science, WCECS 2016
CountryUnited States
CitySan Francisco
Period10/19/1610/21/16

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Calcium carbonate
Catalyst supports
Cobalt
Carbon nanotubes
Catalysts
Drying
Acetylene
Flow rate
Design optimization
Multiwalled carbon nanotubes (MWCN)
Impregnation
Specific surface area
Calcination
Design of experiments
Functional groups
Energy dispersive spectroscopy
Chemical vapor deposition
Thermodynamic stability
Transmission electron microscopy
Temperature

All Science Journal Classification (ASJC) codes

  • Computer Science (miscellaneous)

Cite this

Abdulkareem, A. S., Suleiman, B., Ajamah, S. O. E., Mohammed, I. A., Bankole, M. T., & Afolabi, A. S. (2016). Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis. In W. S. Grundfest, C. Douglas, & S. I. Ao (Eds.), WCECS 2016 - World Congress on Engineering and Computer Science 2016 (Vol. 2226, pp. 570-575). Newswood Limited.
Abdulkareem, A. S. ; Suleiman, B. ; Ajamah, S. O.E. ; Mohammed, I. A. ; Bankole, M. T. ; Afolabi, A. S. / Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis. WCECS 2016 - World Congress on Engineering and Computer Science 2016. editor / Warren S. Grundfest ; Craig Douglas ; S. I. Ao. Vol. 2226 Newswood Limited, 2016. pp. 570-575
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abstract = "This study reports the preparation of monometallic (cobalt) catalyst supported on calcium carbonate for the synthesis of carbon nanotubes (CNTs). The catalyst was synthesized using wet impregnation method and optimized using factorial design of experiment to determine the effects of synthesis conditions (stirring speed, drying temperature, drying time and mass of the support) on the catalyst (Co/CaC03) yield. The catalyst best yield after calcination was 87.8{\%} at stirring speed, drying temperature, drying time and mass of support of 700 rpm, 120°C, 7 hours and 5.5 g respectively. The selected best yield of the produced catalyst was characterized using, SEM/EDX, XRD and TGA to determine its morphology, crystallinity and thermal stability respectively. FTIR was also used to determine the functional groups present in the catalyst. The characterization result showed that the catalyst produced is thermally stable with about 0.034{\%} weight loss at 808.3°C indicating that the catalyst will be suitable for the synthesis of CNT. The catalyst was utilized in a CVD reactor to synthesize carbon nanotubes by investigating the influence of carbon source (acetylene) flow rate on the yield of CNTs. The results obtained revealed that the highest yield of 27{\%} of CNTs was obtained at acetylene flow rate of 90 ml/min. The raw CNTs were analyzed and the results obtained revealed that they were thermally stable with specific surface area of 389.4 m2/g. Meanwhile, the TEM result showed that the synthesized CNTs were multiwalled carbon nanotubes. It can be therefore inferred from the results of various analyses conducted that the prepared monometallic (Co) catalyst on CaCOj support is suitable for the synthesis of CNTs.",
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Abdulkareem, AS, Suleiman, B, Ajamah, SOE, Mohammed, IA, Bankole, MT & Afolabi, AS 2016, Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis. in WS Grundfest, C Douglas & SI Ao (eds), WCECS 2016 - World Congress on Engineering and Computer Science 2016. vol. 2226, Newswood Limited, pp. 570-575, 2016 World Congress on Engineering and Computer Science, WCECS 2016, San Francisco, United States, 10/19/16.

Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis. / Abdulkareem, A. S.; Suleiman, B.; Ajamah, S. O.E.; Mohammed, I. A.; Bankole, M. T.; Afolabi, A. S.

WCECS 2016 - World Congress on Engineering and Computer Science 2016. ed. / Warren S. Grundfest; Craig Douglas; S. I. Ao. Vol. 2226 Newswood Limited, 2016. p. 570-575.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis

AU - Abdulkareem, A. S.

AU - Suleiman, B.

AU - Ajamah, S. O.E.

AU - Mohammed, I. A.

AU - Bankole, M. T.

AU - Afolabi, A. S.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - This study reports the preparation of monometallic (cobalt) catalyst supported on calcium carbonate for the synthesis of carbon nanotubes (CNTs). The catalyst was synthesized using wet impregnation method and optimized using factorial design of experiment to determine the effects of synthesis conditions (stirring speed, drying temperature, drying time and mass of the support) on the catalyst (Co/CaC03) yield. The catalyst best yield after calcination was 87.8% at stirring speed, drying temperature, drying time and mass of support of 700 rpm, 120°C, 7 hours and 5.5 g respectively. The selected best yield of the produced catalyst was characterized using, SEM/EDX, XRD and TGA to determine its morphology, crystallinity and thermal stability respectively. FTIR was also used to determine the functional groups present in the catalyst. The characterization result showed that the catalyst produced is thermally stable with about 0.034% weight loss at 808.3°C indicating that the catalyst will be suitable for the synthesis of CNT. The catalyst was utilized in a CVD reactor to synthesize carbon nanotubes by investigating the influence of carbon source (acetylene) flow rate on the yield of CNTs. The results obtained revealed that the highest yield of 27% of CNTs was obtained at acetylene flow rate of 90 ml/min. The raw CNTs were analyzed and the results obtained revealed that they were thermally stable with specific surface area of 389.4 m2/g. Meanwhile, the TEM result showed that the synthesized CNTs were multiwalled carbon nanotubes. It can be therefore inferred from the results of various analyses conducted that the prepared monometallic (Co) catalyst on CaCOj support is suitable for the synthesis of CNTs.

AB - This study reports the preparation of monometallic (cobalt) catalyst supported on calcium carbonate for the synthesis of carbon nanotubes (CNTs). The catalyst was synthesized using wet impregnation method and optimized using factorial design of experiment to determine the effects of synthesis conditions (stirring speed, drying temperature, drying time and mass of the support) on the catalyst (Co/CaC03) yield. The catalyst best yield after calcination was 87.8% at stirring speed, drying temperature, drying time and mass of support of 700 rpm, 120°C, 7 hours and 5.5 g respectively. The selected best yield of the produced catalyst was characterized using, SEM/EDX, XRD and TGA to determine its morphology, crystallinity and thermal stability respectively. FTIR was also used to determine the functional groups present in the catalyst. The characterization result showed that the catalyst produced is thermally stable with about 0.034% weight loss at 808.3°C indicating that the catalyst will be suitable for the synthesis of CNT. The catalyst was utilized in a CVD reactor to synthesize carbon nanotubes by investigating the influence of carbon source (acetylene) flow rate on the yield of CNTs. The results obtained revealed that the highest yield of 27% of CNTs was obtained at acetylene flow rate of 90 ml/min. The raw CNTs were analyzed and the results obtained revealed that they were thermally stable with specific surface area of 389.4 m2/g. Meanwhile, the TEM result showed that the synthesized CNTs were multiwalled carbon nanotubes. It can be therefore inferred from the results of various analyses conducted that the prepared monometallic (Co) catalyst on CaCOj support is suitable for the synthesis of CNTs.

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VL - 2226

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BT - WCECS 2016 - World Congress on Engineering and Computer Science 2016

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PB - Newswood Limited

ER -

Abdulkareem AS, Suleiman B, Ajamah SOE, Mohammed IA, Bankole MT, Afolabi AS. Factorial design optimization of monometallic (cobalt) catalyst on calcium carbonate support for carbon nanotubes synthesis. In Grundfest WS, Douglas C, Ao SI, editors, WCECS 2016 - World Congress on Engineering and Computer Science 2016. Vol. 2226. Newswood Limited. 2016. p. 570-575