Abstract
All catalysts examined were obtained by the double-impregnation method. The influence of nickel dispersity on the catalytic activity and selectivity of alumina-supported catalyst was observed. The reaction rate attained a maximum value at mean nickel crystallite sizes between 1.5 nm and 1.6 nm. The selectivity towards methane was highest in the same crystallite size range. At crystallite sizes below 1.5 nm, the selectivity towards i-butane increased while that towards ethylene reached a value of 60% in the same size range.
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