Open AccessThe Role of tungsten in trimetallic Co-Mo-W/γ-Al2O3 heterogeneous catalysts for efficient hydro-desulphurisation
Author(s) -
Fouad K. Mahdi,
Mushtaq Albdiry
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1067/1/012151
Subject(s) - catalysis , bimetallic strip , tungsten , incipient wetness impregnation , naphtha , metal , flue gas desulfurization , materials science , molybdenum , inorganic chemistry , chemistry , nuclear chemistry , metallurgy , selectivity , organic chemistry
This study investigates the effect on catalytic activity of inserting tungsten metal (W) into trimetallic W-Mo-Co supported on a Gamma-Alumina (γ-Al 2 O 3 ) heterogeneous catalyst used for hydrodesulphurisation (HDS) in an oil refinery. Bimetallic Co 5 Mo 15 /γ-Al 2 O 3 and a trimetallic Co 5 Mo 14 W 1 /γ-Al 2 O 3 catalysts were synthesised using incipient wetness impregnation. The synthesised trimetallic Co 5 Mo 14 W 1 /γ-Al 2 O 3 catalyst exhibited better catalytic performance, with an 88% hydro-removal percentage of sulphur based on an HDS reaction of petroleum naphtha as compared to the 82% for the bimetallic 5Co-15Mo/γ -Al 2 O 3 catalyst under the same operational conditions at a pressure of 11.5 bar, a temperature 598 K, and a reaction time of 3 hr. This enhanced catalyst activity can be attributed to the presence of tungsten increasing the number of metal sites on the catalyst’s reaction surface.