Hydrocracking of vacuum gas oil in the presence of catalysts NiMo/Al2O3–amorphous aluminosilicates and NiW/Al2O3–amorphous aluminosilicates

Effect of two-component amorphous silica-alumina (ASA) with different Si/Al molar ratios on hydrocracking reactions for increasing naphtha over NiW/USY-ASA

“…Nevertheless, the traditional hydrocracking catalyst based on Y-ASA is not friendly to the reaction system preparing chemical materials from fuel oil because the processing of raw materials and target products are lighter than these of traditional components. 42,43 Therefore, it is important for improving the selectivity of chemical raw materials to prepare a catalyst with a large pore volume and large pore size but suitable acidity. However, the current studies have only focused on improving the pore structure of the support by introducing mesoporous materials, and there is little research on the behaviour of amorphous materials in hydrocracking reactions.…”

“…Nevertheless, the traditional hydrocracking catalyst based on Y-ASA is not friendly to the reaction system preparing chemical materials from fuel oil because the processing of raw materials and target products are lighter than these of traditional components. 42,43…”

NiMo/USY-Alumina Catalysts with Different Zeolite Content for Vacuum Gas Oil Hydrocracking Over Stacked Beds

“…Ni and Mo content in NiMo/Al 2 O 3 catalyst was 3.7 and 12.5 wt% respectively. BET surface area was 148 m 2 /g and pore volume was 0.36 cm 3 /g with average pore diameter of 104 Å. NiW/ASAAl 2 O 3 catalyst, which was used as a second layer in a stacked bed, was prepared by impregnation with aqueous solution prepared from nickel carbonate, ammonium paratungstate and citric acid with subsequent drying at 120°C and calcination at 550°C [13]. Ni and W content in NiW/ASA-Al 2 O 3 catalyst was 3.1 and 17.4 wt% respectively.…”

Shape selectivity effects in the hydroconversion of perhydrophenanthrene over bifunctional catalysts

“…[5][6][7][8] Zeolites and amorphous silica-alumina (ASA) are commonly used in hydrocracking units as the acid function of bifunctional catalysts. [9][10][11][12] The acid function works in synergy with a hydrogenating component, such as Pt or promoted MoS 2 . The latter becomes more active than Pt if the environment contains high H 2 S concentrations.…”