Hameed  Hussein Alwan, Hasan  F. Makki, 
    Hydrodesulfurization of Heavy Naphtha by using NiMo Supported on Graphene,
    Journal of Engineering and Applied Sciences,
    Volume 14,Issue 7,
    2019,
    Pages 2158-2162,
    ISSN 1816-949x,
    jeasci.2019.2158.2162,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2019.2158.2162)
    Abstract: In this study has been removed sulfur from heavy naphtha by hydrodesulfurization reaction HDS
on catalyst consists NiMo supported on graphene, the experiments were done in fixed bed reactor contain
catalyst bed. The experiments were designed by using Taguchi method. The design involved study of effect
reaction temperature 523-598&deg; K, space velocity LHSV (3-6) h<Sup>&#150;1</sup> and hydrogen pressure (1-1.3) MPa while H<sub>2</sub>/oil
2
ratio was kept contestant at 50 mL/mL. Taguchi method help to results analysis in which the analysis exhibited
general trend effect for controllable variables. A mathematical model was got for predicting sulfur content in
final product by used Levenberg-Marquardt nonlinear regression.
    Keywords: Naphtha;catalyst;NiMo catalyst;graphene;hydrodesulfurization;reaction kinetics