화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.17, No.3, 479-483, May, 2011
DOI10.1016/j.jiec.2011.05.029  Export Citation
Oxidative CO2 reforming of CH4 over Ni/α-Al2O3 catalyst
A.S.A. Al-Fatesh†, A.A. Ibrahim, A.H. Fakeeha, A.E. Abasaeed, and M.R.H. Siddiqui1
  • Chemical Engineering Department, College of Engineering King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
  • 1Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
E-mail:
Oxidative carbon dioxide reforming of methane to synthesis gas over alumina-supported Ni catalysts was investigated at atmospheric pressure. The reforming reactions were carried out using a CO2 to CH4 feed ratio of one and reaction temperatures in the range 600-800℃ . The activity and stability of the catalyst, carbon deposition, and synthesis gas (H2/CO) ratio were determined. Catalyst deactivation was primarily due to coke formation. energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and thermo-gravimetric/differential analyzer (TG/DTA) techniques were used to confirm carbon deposition. It was observed that increasing the oxygen feed concentration and/or reaction temperatures, enhanced methane conversion and reduced coke formation. When 20% O2 feed was used at 800 ℃, catalyst stability test revealed a 99.7% CH4 conversion, 1.0% CH4 conversion drop and 1% carbon formation.
Keywords:Dry reforming;Oxidative reforming;Methane;Supported catalysts;Coke;Catalyst stability
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