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

Catalysts

Ahmed Aidid Ibrahim¹  Ashraf Amin²  Mostafa Aly Soliman³  Ahmed Sadeq Al-Fatesh³  Wasim Ullah Khan³  Raja Lafi AL-Otaibi⁴  Anis Hamza Fakeeha⁵ 

[1] Pilot Plant Department Engineering Research Division, National Research Centre, 33 El-Bohouth St., Dokki, Cairo 12311, Egypt;;Chemical Engineering &Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;Chemical Engineering Department, The British University in Egypt, El-Shorouk 11837, Egypt;King Abdulaziz City for Science and Technology, Riyadh 11421, Saudi Arabia;

关键词: hydrogen;    iron;    ceria;    cobalt;    carbon nano-tubes;   

DOI  :  10.3390/catal6030040

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown