N-octane catalytic isomerization with aluminium and aluminiumlanthanum pillared nontronite

(Isomerização catalítica de n-octano com nontronita pilarizada com alumínio e alumínio-lantânio)

Abstract

Nontronite samples pillared with aluminium (Pt/Al-PilM) and aluminium-lanthanum (Pt/AlLa-PilM) were prepared from natural nontronite, characterized and tested as catalyst in n-octane hydroisomerization reaction. The results were compared with those obtained from the same reaction using commercial Y-zeolite impregnated with platinum (Pt-Y). Experiments with commercial zeolite show that platinum is essential to maintain the reactional selectivity of the products. The conversion capacities of (Pt/Al- PilM) and (Pt/AlLa-PilM) were 70% and 40%, respectively, surpassing the Pt-Y performance of 30%, but with the same selectivity. X-ray diffraction data show that organic matter oxidation followed by cationic homogenization is of paramount importance for pillared clay preparation.

Keywords:
pillared nontronite; aluminium-lanthanum pillars; n-octane isomerization; platinum impregnation