SET Proceedings 2978-4387 Caravel Press 10.65582/set.2008.114 2008.114 Syn Gas and Hydrogen Production from 2-step Thermochemical Methane Reforming over Cu/Fe/Ce/Zr Mixed Oxides Medium ChaKwang Seo KimHong Soon KangKyoung Soo ParkChu Sik KimYoung Ho yh_kim@cnu.ac.kr Department of Fine Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, Korea Korea Institute of Energy Research, Daejeon, Korea 24082008 7 1 978-1-995850-08-5 875 882 24 August 2008 © 2008 Copyright WSSET 2008

Thermochemical 2-step methane reforming, involving the reduction of metal oxide with methane to produce syn-gas and the oxidation of the reduced metal oxide with water to produce pure hydrogen, was investigated on iron oxide based metal oxide mediums. The mediums, Cu/Fe/Zr mixed oxide were composed as an active component and ZrO2 as a binder, respectively. The reaction characteristics on the added amounts of Cu in Cu/Fe/Zr mixed oxide mediums and the cyclic tests were investigated. With the increase of the added amount of Cu in Cu/Fe/Zr mixed oxide mediums, the conversion of CH4 and the selectivity of CO2 were increased with the increase of the added amount of Cu in Cu/Fe/Zr mixed oxide mediums. The Cu0.7Fe2.3O4/ZrO2 medium showed the good performance in the ten cycles, indicating that the medium had high durability. Moreover, the gasification of the deposited carbon in the water-splitting step was promoted with the addition of Cu to the mediums. In addition, we investigated the addition of Ce to Cu/Fe/Zr medium for improvement of reactivity.

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