Stability of Pentasil—containing Catalysts in Transformations of Straight—run Naphtha Cuts

Pentasil—containing catalysts for increasing the octane number of straight—run naphtha cuts without using hydrogen—containing gas should have a number of functions [1–3], and stability of operation for a long time is the most important one. The goal of these studies was to select modifiers for pentasil—containing catalysts which could increase the duration of their regeneration—free work in increasing the octane number of gas condensate naphtha cuts. High—silica powdered zeolites of the ZVM and ZVN pentasil family with SiO2:Al2;O3; equal to 44 and 54 (mole), respectively, were used as the initial zeolites.