Craqueamento catalítico de n-Heptano sobre zeólitas ZSM-12 com diferentes razões SiO2/Al2O3 visando obter aditivos de baixo custo para catalisadores de FCC

Abstract

The oil is of vital importance to society due to its derivatives with large employment in economic activities and especially its use as an energy source. The economic and social expansion of the country in recent decades, it requires significant development of our infrastructure, especially in the energy sector. The oil that is positioned as the energy source worldwide leader showed marked increase in the average international price over the past years. In this adverse scenario, improvements in the process of refining the oil representing the large-scale gains for society. The present research study is to evaluate the characteristics of efficiency of catalysis of zeolites ZSM-12 for use as additives for lowcost production of heterogeneous microporous catalysts for catalytic cracking of step (FCC), allowing further reductions in the cost of refining oil. The zeolites are crystalline aluminosilicates, which, in its acid form, playing the role of the main active component of FCC catalysts. In our study the zeolite ZSM-12 (zeolite Socony Mobil) a zeolite synthesized with high SiO2/Al2O3 ratio that presents a structure formed by pores dimensional elliptical opening 12 containing tetrahedral SiO4 (or AlO4) with diameter of 5.5 x 5.9 Å. The results were very promising for the SiO2/Al2O3 ratio assessed, with high conversion and selectivity (mainly the C1 and C3), pointing to ZSM-12 that potential low cost of zeolitic additive for FCC catalysts.