SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (9): 1904-1911.DOI: 10.1016/j.cjche.2018.02.032

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Bi-metallic catalysts of mesoporous Al2O3 supported on Fe, Ni and Mn for methane decomposition: Effect of activation temperature

Anis H. Fakeeha1, Ahmed S. Al-Fatesh1, Biswajit Chowdhury2, Ahmed A. Ibrahim1, Wasim U. Khan1, Shahid Hassan2, Kasim Sasudeen1, Ahmed Elhag Abasaeed1   

  1. 1 Chemical Engineering Department, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia;
    2 Department of Applied Chemistry, Indian School of Mines, Dhanbad, India
  • Received:2017-11-09 Revised:2018-02-05 Online:2018-10-17 Published:2018-09-28
  • Contact: Ahmed S.Al-Fatesh,E-mail addresses:aalfatesh@ksu.edu.sa;Ahmed A.Ibrahim,E-mail addresses:aidid@ksu.edu.sa

Bi-metallic catalysts of mesoporous Al2O3 supported on Fe, Ni and Mn for methane decomposition: Effect of activation temperature

Anis H. Fakeeha1, Ahmed S. Al-Fatesh1, Biswajit Chowdhury2, Ahmed A. Ibrahim1, Wasim U. Khan1, Shahid Hassan2, Kasim Sasudeen1, Ahmed Elhag Abasaeed1   

  1. 1 Chemical Engineering Department, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia;
    2 Department of Applied Chemistry, Indian School of Mines, Dhanbad, India
  • 通讯作者: Ahmed S.Al-Fatesh,E-mail addresses:aalfatesh@ksu.edu.sa;Ahmed A.Ibrahim,E-mail addresses:aidid@ksu.edu.sa

Abstract: Methane decomposition reaction has been studied at three different activation temperatures (500℃, 800℃ and 950℃) over mesoporous alumina supported Ni-Fe and Mn-Fe based bimetallic catalysts. On co-impregnation of Ni on Fe/Al2O3 the activity of the catalyst was retained even at the high activation temperature at 950℃ and up to 180 min. The Ni promotion enhanced the reducibility of Fe/Al2O3 oxides showing higher catalytic activity with a hydrogen yield of 69%. The reactivity of bimetallic Mn and Fe over Al2O3 catalyst decreased at 800℃ and 950℃ activation temperatures. Regeneration studies revealed that the catalyst could be effectively recycled up to 9 times. The addition of O2 (1 ml, 2 ml, 4 ml) in the feed enhanced substantially CH4 conversion, the yield of hydrogen and the stability of the catalyst.

Key words: Carbon nanotube, Hydrogen production, Methane decomposition, Manganese promoter, Nickel promoter

摘要: Methane decomposition reaction has been studied at three different activation temperatures (500℃, 800℃ and 950℃) over mesoporous alumina supported Ni-Fe and Mn-Fe based bimetallic catalysts. On co-impregnation of Ni on Fe/Al2O3 the activity of the catalyst was retained even at the high activation temperature at 950℃ and up to 180 min. The Ni promotion enhanced the reducibility of Fe/Al2O3 oxides showing higher catalytic activity with a hydrogen yield of 69%. The reactivity of bimetallic Mn and Fe over Al2O3 catalyst decreased at 800℃ and 950℃ activation temperatures. Regeneration studies revealed that the catalyst could be effectively recycled up to 9 times. The addition of O2 (1 ml, 2 ml, 4 ml) in the feed enhanced substantially CH4 conversion, the yield of hydrogen and the stability of the catalyst.

关键词: Carbon nanotube, Hydrogen production, Methane decomposition, Manganese promoter, Nickel promoter