Abstract
AbstractNiNaY zeolite catalysts were prepared by successive ion exchange of NaY. The catalysts were characterized for BET surface area, nickel metal area, nickel crystallite size and crystallinity. The methanation of carbon monoxide was studied in a fixed bed reactor in the temperature range of 523–673 K. Specific activities for methanation were found to vary with nickel concentration and crystallite size. The values of nickel metal area and specific methanation activity for the uncalcined catalysts were found to be higher compared to those of calcined catalysts. The effect of reduction at 723 K on the zeolite base structure and the effects of calcining the catalyst on metal area, crystallite size and activity are discussed.
Published Version
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