Korean Journal of Chemical Engineering

, Volume 25, Issue 1, pp 41–45

Effect of Al2O3-ZrO2 xerogel support on hydrogen production by steam reforming of LNG over Ni/Al2O3-ZrO2 catalyst

  • Jeong Gil Seo
  • Min Hye Youn
  • Kyung Min Cho
  • Sunyoung Park
  • Sang Hee Lee
  • Joohyung Lee
  • In Kyu Song
Catalysis, Reaction Engineering, Industrial Chemistry

Abstract

An Al2O3-ZrO2 xerogel (AZ-SG) was prepared by a sol-gel method for use as a support for a nickel catalyst. The Ni/AZ-SG catalyst was then prepared by an impregnation method, and was applied to hydrogen production by steam reforming of LNG. A nickel catalyst supported on commercial alumina (A-C) was also prepared (Ni/A-C) for comparison. The hydroxyl-rich surface of the AZ-SG support increased the dispersion of nickel species on the support during the calcination step. The formation of a surface nickel aluminate-like phase in the Ni/AZ-SG catalyst greatly enhanced the reducibility of the Ni/AZ-SG catalyst. The ZrO2 in the AZ-SG support increased the adsorption of steam onto the support and the subsequent spillover of steam from the support to the active nickel sites in the Ni/AZ-SG catalyst. Both the high surface area and the well-developed mesoporosity of the Ni/AZ-SG catalyst improved the gasification of adsorbed surface hydrocarbons in the reaction. In the steam reforming of LNG, the Ni/AZ-SG catalyst showed a better catalytic performance than the Ni/A-C catalyst. Moreover, the Ni/AZ-SG catalyst showed strong resistance toward catalyst deactivation.

Key words

Al2O3-ZrO2 Xerogel Sol-gel Supported Nickel Catalyst Steam Reforming LNG Hydrogen Production 

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Copyright information

© Springer 2008

Authors and Affiliations

  • Jeong Gil Seo
    • 1
  • Min Hye Youn
    • 1
  • Kyung Min Cho
    • 1
  • Sunyoung Park
    • 1
  • Sang Hee Lee
    • 1
  • Joohyung Lee
    • 1
  • In Kyu Song
    • 1
  1. 1.School of Chemical and Biological Engineering, Research Center for Energy Conversion and StorageSeoul National UniversitySeoulKorea

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