Abstract
The resistance to coking of variously prepared nickel catalysts (coprecipitated mixed) of the composition Ni/Al 2O 3-MgO-NiO for the reaction of the steam reforming of hydrocarbons (NiO reduction degree ≦ 50%) was examined. The results present simultaneously the effects of nickel dispersion and support composition on catalyst coking rate, thus combining the effects previously presented separately. The study also proves the existence of two groups of factors which determine the coking rate of the catalysts examined: direct factors which include nickel dispersion and phase composition of the support, and indirect factors connected with preparation procedures (catalyst composition, NiO reduction degree and preparation conditions).
Published Version
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