Influence of the Reduction Temperature and the Nature of the Support on the Performance of Zirconia and Alumina-Supported Pt Catalysts for n-Dodecane Hydroisomerization

Catalysts based on zirconia- and alumina-supported tungsten oxides (15 wt % W) with a small loading of platinum (0.3 Pt) were selected to study the influence reduction temperature nature support hydroisomerization n-dodecane. The has major metal dispersion, which impacts catalytic activity. In addition, alumina zirconia supports show different properties (mainly acid site strength surface area), play an important role in conversion. NH3-TPD profiles indicate that acidity alumina-based catalysts is clearly higher than their counterparts; this can be attributed stronger interaction WOx species alumina. PtW/Al catalyst was found exhibit best performance for n-dodecane its acidity, ascribed larger area relative counterparts. selectivity hydrocarbons (C7–10, C11 i-C12) very similar all studied, branched C12 being main products obtained (~80%). 350 °C studied trickled-bed-mode reactor.