S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Journal Papers (저널논문_화학생물공학부)
Hydrogen production by steam reforming of liquefied natural gas (LNG) over mesoporous nickel–alumina xerogel catalysts: Effect of nickel content
- Seo, Jeong Gil; Youn, Min Hye; Lee, Ho-In; Kim, Jae Jeong; Yang, Eunsun; Chung, Jin Suk; Kim, Pil; Song, In Kyu
- Issue Date
- Chemical Engineering Journal 141 (2008) 298–304
- Mesoporous nickel–alumina xerogel catalyst; Sol–gel method; Liquefied natural gas; Steam reforming; Hydrogen production
- Mesoporous nickel–alumina xerogel (XNiAl) catalysts with various nickel contents were prepared by a single-step sol–gel method for use in
hydrogen production by steam reforming of liquefied natural gas (LNG). The effect of nickel content on the catalytic performance of XNiAl catalysts
was investigated. Nickel species were finely dispersed in the XNiAl catalysts through the formation of Ni–O–Al composite structure. The XNiAl
catalysts served as efficient catalysts in the hydrogen production by steam reforming of LNG. Both LNG conversion and H2 composition in dry
gas showed volcano-shaped curves with respect to nickel content. Thus, optimal nickel content was required for maximum catalytic performance.
The performance of XNiAl catalysts in the steam reforming of LNG increased with increasing reducibility of the catalyst. Among the catalysts
examined, the 30NiAl (30 wt% Ni) catalyst with the highest reducibility showed the best catalytic performance. The highest surface area and the
largest pore volume of the 30NiAl (30 wt% Ni) catalyst were also partly responsible for its superior catalytic performance.
© 2008 Elsevier B.V. All rights reserved.
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