Bifunctional Hydrogenating/Acid Catalysis: Quantification of the Intimacy Criterion

n-Alkane hydroisomerisation over Pt-tridimensional large pore Hzeolite catalysts was shown to be determined by only two parameters, easy to be quantified: the hydrogenating/acid balance and the number of acid steps undergone by olefinic intermediates during their diffusion between Pt sites, this last one being related to the Weisz's intimacy criterion. .