화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.26, 375-383, June, 2015
DOI10.1016/j.jiec.2014.12.012  Export Citation
Carbon dioxide reforming of methane on Ni-MgO-Al2O3 catalysts prepared by sol-gel method: Effects of Mg/Al ratios
Ji-Eun Min1, 2, Yun-Jo Lee1, 3, Hae-Gu Park1, 3, Chundong Zhang1, 2, and Ki-Won Jun1, 2, †
  • 1Research Center for Green Catalysis, Korea Research Institute of Chemical Technology (KRICT), Yuseong, Daejeon 305-600, Republic of Korea
  • 2Green Chemistry and Environmental Biotechnology, School of Science, Korea University of Science and Technology (UST), Yuseong, Daejeon 305-333, Republic of Korea
  • 3, Korea
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Carbon dioxide reforming of methane on Ni-MgO-Al2O3 catalysts has been investigated systematically at various Mg/Al ratios, focusing on catalytic activity and coke resistance. Ni catalysts supported on MgO?Al2O3 were prepared by sol-gel method using citric acid as a gelling agent. The characterization of the catalyst was carried out by XRD, TEM, TPR, N2 adsorption, H2 chemisorption, O2 titration, CO2-TPD and TGA. In the comparison with a catalyst prepared by coprecipitation method, it was found that the catalyst prepared by the sol-gel method showed higher coke resistance. In the variation of Mg/Al ratios, high coke resistance was obtained with increasing MgO loading, while high catalytic activity was observed with the catalysts of medium MgO/(MgO + Al2O3) ratio (0.44-0.86), of which the superior catalytic activity is likely attributed to high specific surface area and well dispersed Ni particles.
Keywords:Carbon dioxide reforming of methane;Mg/Al mixed oxide;Ni-based catalyst;Sol-gel method
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