Nickel-alumina catalyst susceptibility

Three nickel catalysts have been prepared in order to test the relative contribution of the proposed mechanisms Two catalysts by impregnation with nickel nitrate solution of a gamma alumina support susceptible to sintering and of a sinter stable alpha alumina support. The third catalyst was prepared via a novel route developed in oar laboratory not using nitrate. 

Alumina-zeolite supported nickel catalysts were investigated for the conversion of n-hexane and dewaxing of diesel oil fraction. The method of nickel incorporation influenced the susceptibility of nickel to reduction and catalyst activity. Investigated also was the effect of reoxidation temperature on the accessibility of the metallic surface. Differences in the activities of the catalysts can be attributed to the morphology of the deposits. 

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