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Catalysts 2016, 6(3), 40; doi:10.3390/catal6030040

Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition

1
Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
2
Chemical Engineering & Pilot Plant Department Engineering Research Division, National Research Centre, 33 El-Bohouth St., Dokki, Cairo 12311, Egypt
3
Chemical Engineering Department, The British University in Egypt, El-Shorouk 11837, Egypt
4
King Abdulaziz City for Science and Technology, Riyadh 11421, Saudi Arabia
*
Author to whom correspondence should be addressed.
Academic Editor: Keith Hohn
Received: 11 December 2015 / Revised: 16 February 2016 / Accepted: 26 February 2016 / Published: 8 March 2016
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Abstract

Catalytic methane decomposition is studied in a fixed bed reactor. Two sets of bimetallic catalysts are employed, namely: 30%Fe-X%Ce/Al2O3 and 30%Fe-X%Co/Al2O3, and compared with monometallic 30%Fe/Al2O3 catalyst. The effect of promoting Fe with Ce and Co and reduction temperature are investigated. The results reveal that Ce addition has shown a negative impact on H2 yield while a positive effect on H2 yield and catalyst stability are observed with Co addition. In terms of number of moles of produced hydrogen per active sites, Fe/Al2O3 has shown a higher number of moles of hydrogen compared to bimetallic catalysts. The catalyst reduced at 500 °C exhibits better activity as compared to the catalyst reduced at 950 °C. Carbon nano-tubes are deposited on the catalyst within the range of 14–73 nm diameter. Two types of carbon nanotubes are detected: Cα and Cγ. View Full-Text
Keywords: hydrogen; iron; ceria; cobalt; carbon nano-tubes hydrogen; iron; ceria; cobalt; carbon nano-tubes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Al-Fatesh, A.S.; Amin, A.; Ibrahim, A.A.; Khan, W.U.; Soliman, M.A.; AL-Otaibi, R.L.; Fakeeha, A.H. Effect of Ce and Co Addition to Fe/Al2O3 for Catalytic Methane Decomposition. Catalysts 2016, 6, 40.

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