The Influence of Promoter on Ni(15)/La(5)/γ-Al2O3 catalyst in CO2-Steam Reforming of Methane to Syngas at High Pressure

Title
The Influence of Promoter on Ni(15)/La(5)/γ-Al2O3 catalyst in CO2-Steam Reforming of Methane to Syngas at High Pressure
Authors
옥혜정박명희문동주김정호박남국김영철
Keywords
Methane; Steam Carbon Dioxide Reforming; SCR; Ni; Catalyst
Issue Date
2015-01
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 15, NO 1, 449-453
Abstract
Catalysts were investigated with respect to catalytic activity and coke formation in combined steam and carbon dioxide reforming of methane to develop a highly active and stable catalyst for gas to liquid processes. Ni/La–X/Al2O3 (X = Co, Ce, Mo) catalysts were prepared by an impregnation method. The combined steam and carbon dioxide reforming of methane reaction were studied as a function of high pressure (20 bar) in a fixed bed reactor system. X-ray diffraction, BET surface area, and H2-temperature programmed reduction were used to observe the characteristics of the prepared catalysts. Coke formation of used catalysts was examined by scanning electron microscopy, transmission electron microscopy and the coke amount of used catalysts was measured by thermo gravimetric analysis. Catalysts with smaller particle size had a higher temperature of reduction, which had a positive effect on catalytic activity. The improvement in active site rise and dispersion and the lowest metal crystal size had an effect on catalyst activity. As a result, the Ni/La–Co/Al2O3 catalyst showed the highest activity at a reaction temperature of 800 C and a reaction pressure of 20 bar.
URI
http://pubs.kist.re.kr/handle/201004/46543
ISSN
15334880
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KIST Publication > Article
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