Patent ID: 8142644
Filing Date: 2012-03-27
Classification: C10G,Y10S

Abstract:
1. A process for hydrocracking and hydro-isomerisation of a paraffinic feedstock obtained by Fischer-Tropsch hydrocarbon synthesis comprising at least 50 wt % of components boiling above 370° C. to obtain a hydro-isomerised feedstock, the process comprising contacting the feedstock, in the presence of hydrogen, at elevated temperature and pressure with a catalyst comprising a hydrogenating compound supported on a carrier comprising amorphous silica-alumina having less than 10 wt % of crystalline phase, the carrier having a pore volume of at least 0.8 ml/g, wherein at most 40% of the pore volume comes from pores having a pore diameter above 35 nm and wherein at most 20% of the pore volume comes from pores having a pore diameter below 50 Å and above 37 Å, the carrier having a median pore diameter of at least 85 Å, wherein the pores of the carrier are characterized by a product of (pore surface area per pore volume) and (median pore diameter) ranging from 34,000 Å·m 2 /ml to 44,000 Å·m 2 /ml, where pore surface area is determined by BET nitrogen adsorption and pore volume and median pore diameter are determined by mercury intrusion porosimetry.