Hydrogen production by steam reforming of liquefied natural gas (LNG) over mesoporous nickel–alumina aerogel catalyst

A mesoporous nickel–alumina aerogel catalyst (NiAE-SS) was prepared by a single-step sol–gel method and a subsequent CO 2 supercritical drying method for use in hydrogen production by steam reforming of liquefied natural gas (LNG). For comparison, a nickel catalyst supported on alumina aerogel (Ni/A...

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Veröffentlicht in:International journal of hydrogen energy 2010-07, Vol.35 (13), p.6738-6746
Hauptverfasser: Seo, Jeong Gil, Youn, Min Hye, Jung, Ji Chul, Song, In Kyu
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container_title International journal of hydrogen energy
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creator Seo, Jeong Gil
Youn, Min Hye
Jung, Ji Chul
Song, In Kyu
description A mesoporous nickel–alumina aerogel catalyst (NiAE-SS) was prepared by a single-step sol–gel method and a subsequent CO 2 supercritical drying method for use in hydrogen production by steam reforming of liquefied natural gas (LNG). For comparison, a nickel catalyst supported on alumina aerogel (Ni/AE-IP) was also prepared by an impregnation method. The effect of preparation method of supported nickel catalysts on their physicochemical properties and catalytic performance in the steam reforming of LNG was investigated. NiAE-SS catalyst retained superior textural properties compared to Ni/AE-IP catalyst. Nickel species were finely dispersed on the surface of both Ni/AE-IP and NiAE-SS catalysts through the formation of surface nickel aluminate phase. Although both Ni/AE-IP and NiAE-SS catalysts exhibited a stable catalytic performance, NiAE-SS catalyst showed a better catalytic performance than Ni/AE-IP catalyst in terms of LNG conversion and hydrogen yield. High nickel surface area, high nickel dispersion, and well-developed mesoporosity of NiAE-SS catalyst played an important role in enhancing the catalytic performance in the steam reforming of LNG. Uniformly distributed metallic nickel particles in the NiAE-SS catalyst were also responsible for its high catalytic performance.
doi_str_mv 10.1016/j.ijhydene.2010.04.093
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subjects Aerogels
Alternative fuels. Production and utilization
Applied sciences
Catalysis
Catalysts
CO 2 supercritical drying
Dispersions
Energy
Exact sciences and technology
Fuels
Hydrogen
Hydrogen production
Liquefied natural gas
Mesoporous nickel–alumina aerogel
Nickel
Reforming
Sol–gel method
Steam reforming of liquefied natural gas
title Hydrogen production by steam reforming of liquefied natural gas (LNG) over mesoporous nickel–alumina aerogel catalyst
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