26-P-06-Hydroisomerization of n-decane in the presence of sulfur. Effect of metal-acid balance and metal location

Abstract

This chapter presents the study of the isomerization of n -decane in the presence of 1000 ppm hydrogen sulfide (H 2 S) on bifunctional Pt-MAPSO-31catalysts. Sulfur suppresses the catalyst metal function, thereby changing the metal–acid balance, which is required for high performance. Methods for controlling the catalyst metal–acid balance by changing the ratio between metal and acid functions are presented. Catalysts with high isomerization selectivity in the presence of sulfur should have a strong metal function. Close proximity of metal and acid sites, as well as highly dispersed metal located on the binder, gives a catalyst with an isomerization selectivity of about 90%. This is similar to the selectivity of the same catalyst in the absence of sulfur.