Author/Authors :
Rashidi، Sina نويسنده Department of Chemical Engineering (HSE), Petroleum University of Technology, Abadan, Iran Rashidi, Sina , Khosravi Nikou، Mohammad Reza نويسنده Department of Gas Engineering, Petroleum University of Technology, Ahwaz, Iran Khosravi Nikou, Mohammad Reza , Anvaripour، Bagher نويسنده Department of Chemical Engineering (HSE), Petroleum University of Technology, Abadan, Iran Anvaripour, Bagher , Hamoule، Touba نويسنده Department of Gas Engineering, Petroleum University of Technology, Ahwaz, Iran Hamoule, Touba
Abstract :
The performance of MSU-S and its forms modified with phosphotungstic acid (HPW) and nickel (Ni)
for the desulfurization and denitrogenation of model diesel fuel were studied. According to the results
of the characteristic tests (N2 adsorption-desorption, XRD, SEM, and NH3-TPD), heteropoly acid
incorporation causes higher acidity along with a negligible loss of structural aspects, while Ni
impregnation leaves a drastic negative effect on mesoporous structure, crystalline phase, and particle
shape along with a positive impact on surface acidity. With both modifications (HPW and Ni), the
maximum increase of 33.18% and 6.88% was occurred for the adsorption loading of total sulfur and
total nitrogen respectively. The adsorption loading and selectivity of all the adsorbents for total
nitrogen were slightly more than those for total sulfur (the selective adsorption of nitrogen over
sulfur). The pseudo-second order model can best fit the kinetics data and Freundlich model can best
describe the equilibrium isotherm for all the species over Ni/HPW-MSU-S.
