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REVISTA DE CHIMIE
Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2016, Volume 67, Issue 1,



Ali Al-Ali, Mihaela Bombos, Daniela Angela Buzoianu, Vasile Matei, Raluca Dragomir, Traian Juganaru, Dorin Bombos

Hydrotreating of Coker Gas Oil in Single and Double Catalytic Layer

Abstract:

Hydrotreating of heavy delayed cooking gas oil was performed in single catalytic layer on Pt-Pd/Zn-ZSM-5 (SCL) and in double catalytic layer on Co-Mo / g -Al2O3 and Pt-Pd/Zn-ZSM-5 (DCL). The catalysts were prepared by sequential impregnation. The distribution of the acid strength of the prepared catalysts was determined by thermic desorption of diethyl amine in the temperature range from 20 to 600°C. Textural properties of the catalysts, consisting of large specific surface, high pore volume and mesopore size distribution with a single maximum pore show a good accessibility of catalysts. Experiments were carried out on a laboratory echipament using a fixed bed catalytic reactor at a temperature of 400°C, pressure of 100 atm with a gas oil volume flow rate (VHSV) of 1.0 h-1 and a volume ratio hydrogen/gas oil of 900Ncm3/cm3. The organic compounds evaluated were total aromatic hydrocarbons, polyaromatic hydrocarbons and unsaturated hydrocarbons. The activity of double catalytic layer was higher that of single catalytic layer.
Keywords:
catalyst; hydrotreating; support acidity; heavy delayed cooking gas oil; aromatics hydrocarbons

Issue: 2016, Volume 67, Issue 1
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