Effect of alumina‐deficiency and promotion with platinum and rhenium on the catalytic and diffusional behaviour of mordenite catalysts

Abstract

Abstract The hydroconversion of n‐heptane on catalysts containing platinum hydrogen‐mordenite, platinum/alumina‐deficient hydrogen mordenite and platinum‐rhenium/alumina‐deficient hydrogen mordenite was carried out in a continuous high‐pressure plug‐flow reactor system and product analysis was carried out by gas chromatography (GC). The effectiveness factor for each catalyst was calculated by iteration on estimated rate constant at various reaction temperatures and the effect of diffusion on the catalytic behaviour was correlated. Catalysts exhibiting larger values of effectiveness factor were found to enhance production of 2,3‐dimethylpentane on account of 3‐methylhexane, whereas the reverse is true with respect to catalysts exhibiting lower values of effectiveness factor.