Hydrogen production from catalytic steam reforming of methane: influence of catalyst composition

作者：Isha R; Williams P T^*

来源：Journal of the Energy Institute, 2012, 85(1): 29-37.

DOI：10.1179/1743-967111Z.0000000003

• Steam reforming
• Methane
• Nickel
• Cerium
• Alumina

The effect of catalyst support (alpha-Al2O3, MgO and CaO) and catalyst metal (Ni and Ce) loading in the catalytic steam reforming of methane has been investigated. The catalysts were prepared via a wet impregnation method and examined at temperatures from 500 to 900 degrees C. The results showed that the alpha-Al2O3 a support gave the highest conversion of methane to hydrogen compared to the MgO and CaO supports. The H-2 production and CH4 conversion increased at higher temperatures and with higher Ni metal loaded onto the support. There was no significant effect in terms of H-2 production and CH4 conversion when %26gt;5 wt-% of Ni metal was present in the Ni/Ce/alpha-Al2O3 catalyst. However, H-2 production decreased when the Ni content of the catalyst was %26gt;15 wt-%. The addition of Ce in the catalyst reduced the coke formation on the catalyst. The 5Ni/OCe/alpha-Al2O3 catalyst was effective at high temperature (%26gt;900 degrees C). The 5Ni/10Ce/alpha-Al2O3 catalyst was also found to be the most efficient catalyst in relation to the highest H-2 production and CH4 conversion for the steam reforming of CH4 at 800 degrees C.

• 出版日期2012-2