Effect of synthesis solution pH of Co/γ-Al2O3 catalyst on its catalytic properties for methane conversion to syngas

Amir Mosayebi; Reza Abedini

Volume 46 Issue 3

Mar. 2018

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Amir Mosayebi, Reza Abedini. Effect of synthesis solution pH of Co/γ-Al2O3 catalyst on its catalytic properties for methane conversion to syngas[J]. Journal of Fuel Chemistry and Technology, 2018, 46(3): 311-318.

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Amir Mosayebi, Reza Abedini. Effect of synthesis solution pH of Co/γ-Al₂O₃ catalyst on its catalytic properties for methane conversion to syngas[J]. Journal of Fuel Chemistry and Technology, 2018, 46(3): 311-318.

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Effect of synthesis solution pH of Co/γ-Al₂O₃ catalyst on its catalytic properties for methane conversion to syngas

Amir Mosayebi^{1
,
,},
Reza Abedini²

1.
Department of Chemical Engineering, Tafresh University, Tafresh 39518 79611, Iran
2.
Faculty of Chemical Engineering, Babol Noshirvani University of Technology, Babol 47148 71167, Iran

More Information

Corresponding author: Amir Mosayebi, E-mail: mosayebi@tafreshu.ac.ir
Received Date: 2017-11-01
Rev Recd Date: 2018-01-31

Available Online: 2021-01-23

Publish Date: 2018-03-10

Abstract

Abstract

The cobalt nanoparticles over γ-Al₂O₃ support were prepared via chemical reduction of CoCl₂·6H₂O using NaBH₄ with various values of pH in the range of 11.92-13.80. Synthesized catalysts were studied through X-ray diffraction (XRD), N₂ adsorption/desorption (BET), H₂-temperature programmed reduction (H₂-TPR), H₂-chemisorption, O₂ pulse titration and temperature programmed oxidation (TPO) methods. Obtained results exhibited the synthesis solution pH showed a significant influence on the activity and selectivity in partial oxidation of methane reaction. The methane conversion, CO selectivity and H₂ yield were enhanced by increasing of the synthesis solution pH. Compared to other catalysts, the catalyst that synthesized at pH of 13.80, showed a superior ability in syngas production with a H₂/CO ratio of near 2 and also a proper stability against deactivation during the partial oxidation of methane.
- partial oxidation,
- Co/γ-Al₂O₃,
- nanoparticles,
- selectivity,
- pH value

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References(28)

References

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