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- Title
Hydrogen Production by Steam Reforming of Liquefied Natural Gas over Mesoporous Ni-Al<sub>2</sub>O<sub>3</sub> Catalysts Prepared by a Co-Precipitation Method: Effect of Ni/Al Atomic Ratio.
- Authors
Seo, Jeong Gil; Youn, Min Hye; Nam, Insung; Hwang, Sunhwan; Chung, Jin Suk; Song, In Kyu
- Abstract
Mesoporous Ni-Al2O3 ( XNiAl) catalysts with different Ni/Al atomic ratio ( X) were prepared by a co-precipitation method for use in hydrogen production by steam reforming of liquefied natural gas (LNG). The effect of Ni/Al atomic ratio of mesoporous XNiAl catalysts on their physicochemical properties and catalytic activity for steam reforming of LNG was investigated. Physical properties of XNiAl catalysts did not show a consistent trend with respect to Ni/Al atomic ratio, while chemical properties of XNiAl catalysts strongly influenced by Ni/Al atomic ratio. Nickel species were highly dispersed on the surface of XNiAl catalysts through the formation of nickel aluminate phase or solid solution of nickel oxide and nickel aluminate phase. In the steam reforming of LNG, both LNG conversion and hydrogen composition in dry gas showed volcano-shaped curves with respect to Ni/Al atomic ratio. Nickel surface area of XNiAl catalysts was well correlated with LNG conversion and hydrogen composition over the catalysts. Among the catalysts tested, 0.8NiAl (Ni/Al = 0.8) catalyst with the highest nickel surface area showed the best catalytic performance.
- Subjects
NICKEL catalysts; HYDROGEN production; MESOPOROUS materials; LIQUEFIED natural gas; PROPERTIES of matter; SOLID solutions; ALUMINATES
- Publication
Catalysis Letters, 2009, Vol 130, Issue 3/4, p410
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-009-0024-x