Abstract
The effect of temperature, pressure and H2/feed ratio was studied for hydroprocessing of light cycle oil (LCO) over sulfided NiMo supported on mesoporous H-ZSM-5. Mesoporous H-ZSM-5 catalyst used in this study was synthesized by hydrothermal method and ion exchange. The catalyst was characterized by N2 sorption studies, X-ray diffraction, scanning electron microscopy, transmission electron microscopy techniques. Polyaromatic hydrocarbons were reduced from 64 to 10 wt% at 300 °C and 60 bar. Mono-aromatics yield was increased to 60 wt% at higher temperature (380 °C). Properties like viscosity, cetane index, distillation (95% vol. recovery) and density of hydroprocessed LCO products at 380 °C, make it suitable for addition to diesel pool. At severe reaction conditions (380 °C and 70 bar), °API and cetane index values increased, while viscosity and density decreased. After 65 h of continuous run, polyaromatic hydrocarbons yield were increasing due to the loss of catalytic activity.
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