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Received August 22, 2006
Accepted November 1, 2006
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Performance of Ni catalyst supported on La-hexaaluminate in CO2 reforming of CH4
Korea Institute of Energy Research, Daejeon 305-343, Korea
kssong@kier.re.kr
Korean Journal of Chemical Engineering, May 2007, 24(3), 477-480(4), 10.1007/s11814-007-0083-x
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Abstract
CO2 reforming of CH4 was performed using Ni catalyst supported on La-hexaaluminate which has been an well-known material for high-temperature combustion. La-hexaaluminate was synthesized by sol-gel method at various conditions where different amount of Ni (5-20 wt%) was loaded. Ni/La-hexaaluminate experienced 72 h reaction and its catalytic activity was compared with that of Ni/Al2O3. Ni/La-hexaaluminate shows higher reforming activity and resistance to coke deposition compared to the Ni/Al2O3 model catalyst. Coke deposition increases proportionally to Ni content. Consequently, Ni(5)/La-hexaaluminate(700) is the most efficient catalyst among various Ni/La-hexaaluminate catalysts regarding the cost of Ni in Ni(X)/La-hexaaluminate catalysts. BET surface area, XRD, EA, TGA and TPO were performed for surface characterization.
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