Investigation of Oxidative Desulfurization of Light Naphtha by NiMo/𝛾-Al2O3 Catalyst

Document Type : Research Article


1 Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, I.R. IRAN

2 Department of Chemistry and Chemical Engineering, Buin Zahra Branch, Islamic Azad University, Buin Zahra, I.R. IRAN


In this research, we investigated the effects of parameters, including reaction time, reaction temperature, the mass ratio (mcat./mfeed), and volume ratio (VH2O2/Vfeed) on sulfur removal conversion of light naphtha under oxidative desulfurization (ODS) reaction. So to achieve this goal, several active catalysts are prepared while molybdenum (Mo) was used as an active metal. Nickel (Ni) was the promoter. 𝛾-alumina (𝛾-Al2O3) was used as a support and modified by chelate agents such as citric acid (C6H8O7), ethylene diamine tetraacetic acid (EDTA), polyethylene glycol (PEG), Sorbitol, and urea ((NH4)2CO). These catalysts were synthesized by using the wetness impregnation in-situ method. Then they were applied to the ODS process for light naphtha. These catalysts were characterized by N2adsorption-desorption isotherms (BET, BJH), Scanning Electron Microscope (SEM), temperature-programmed desorption (NH3-TPD), and FT-IR analysis. The catalyst that synthesized in the presence of sorbitol, had the best performance.  The optimization conditions for this catalyst were m (catalyst)/m (feed)= 0.013, reaction temperature of 35 °C, 50 mL of feed, 0.5 g of catalyst, 1 hour reaction time, and V (H2O2)/VFeed = 0.045.  It revealed the maximum performance for ODS reaction of the real feed. Under these circumstances, the sulfur of light naphtha decreased from 160 ppm to 38 ppm during the reaction.


Main Subjects

[2] Haghighat  Mamaghani A., Fatemi Sh., Asgari M., Investigation of Influential Parameter in Deep Oxidative Desulfurization of Dibenzothiophene with Hydrogen Peroxide and Formic Acid, Int. J. Chem. Engi., 2013: (2013)
[3] Flores R., Rodas A., Chavarria W., Desulfurization of Fuel Oils Using an Advanced Oxidation Method, Div. Fuel Chem. 49: 341-342 (2004)
[4] Zhao P., Zhang M., Wu Y., Wang J., heterogeneous Selective Oxidation of Sulfides with H2O2 Catalyzed by Ionic Liquid-Based Polyoxometalate Salts, Ind. Eng. Chem. Res., 51:6641-6647 (2012)
[5] Mohammadi Meman N., Pourkhalil M., Rashidi A.M., Zarenezhad B., Synthesis, Characterization and Operation of a Functionalized Multi-Walled CNT Supported MnOx Nanocatalyst for Deep Oxidative Desulfurization of Sour Petroleum Fractions, J. Ind. Eng. Chem., 20: 4054-4058 (2014)
[6] Betiha M.A., Rabie A.M., Ahmed H.S., Abdelrahman A.A., El-Shahat M.F., Oxidative Desulfurization Using Graphene and Its Composites for Fuel Containing Thiophene and Its Derivatives: An Update Review, Egyp. J. Petro., 27: 715-730(2018)
[7]Abu Bakar W.A.W., Ali R., Kadir A.A.A., Mokhtar W.N.A.W., Effect of Transition Metal Oxides Catalysts on Oxidative Desulfurization of Model Diesel, Fuel Proc. Tech.101:78-84 (2012)
[8] Jin W., Tian Y., Wang G., Zeng D., Xu Q., Cui  J., Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Molybdenum Oxide Supported On Alumina Modified by Ca2+, RSC Adv., 7: 48208-48213 (2017)
[9] Luo J., Liu W., Xiong J., Yang L., Li H., Yin S., Zhu W., Li H., SBA-15 Supported Molybdenum Oxide Towards Efficient Catalytic Oxidative Desulfurization: Effect of Calcination Temperature of CatalystsJ. Chin. Adv. Mate. Soci., 6: 44-54 (2018)
[10] Wang J., Zhoa D., Li K., Oxidative Desulfurization of  Dibenzothiophene Using Ozone and Hydrogen Peroxide in Ionic Liquid, Energy &fuels, 24:2527-2529 (2010)
[11] Han X., Wang A., Wang X., Li X., Wang Y., Hu Y., catalytic Performance of P-Modified MoO3/SiOin Oxidative Desulfurization by Cumene Hydroperoxide, Catal. Commun. 42:6-9 (2013)
[13] Shi M., Zhang D., Yu X., Li Y., Wang X., Yang W., Deep Oxidative Desulfurization Catalyzed by (NH4)5H6PV8Mo4O40 Using Molecular Oxygen as an Oxidant, Fuel Proc. tech., 160:136-142 (2017)
[14] Liao X., Wu D., Geng B., Lu S., Yao Y., Deep Oxidative Desulfurization Catalyzed by (NH4)xH4-xPMo11VO40 (x= 1,2,3,4)Using O2 as an Oxidant, RSC Adv., 7:48454-48460 (2017)
[15] Zhao M., Han P., Lu X., Ultrasound Assisted Photocatalytic Oxidative Desulfurization of Model Diesel, Petr. Sci. Tech., 0: 1-5 (2017)
[16] Xiong J., Zhu W.S., Ding W.J., Yang L., Chao Y.H., Li H.P., Zhu F.X., Li H.M., Phosphotungstic Acid Immobilized on Ionic Liquid-Modified SBA-15: Efficient Hydrophobic Heterogeneous Catalyst for Oxidative Desulfurization in Fuel, Ind. Eng. Chem. Res. 53: 19895-19904(2014)
[17] Mohammadi Meman N., Zarenezhad B., Rashidi A.M., Hajjar Z., Esmaeili E., Application of Palladium Supported on Functionalized Mwnts for Oxidative Desulfurization of Naphtha, J. Ind. Eng. Chem. 22:179-184 (2015)
[18] Keynejad K., Nikazar M., Dabir B., Diesel Desulfurization Using an Ultrasound-Assisted Oxidative Process, Petr. Sci. Tech., 36: 718-725 (2018)
[19] Ebrahimi S.L., Khosravi-Nikou M.R., Sonoreactor Optimization for Ultrasound Assisted Oxidative Desulfurization of Liquid Hydrocarbon, Petr. Sci. Tech., 36: 959-965 (2018)
[20] Granadeiro C.M., Ferreira P.M.C., Juliao D., Ribeiro L.A., Valenca R., Ribeiro J.C., Goncalves I.S., Castro B., Pillinger M., Cunha-silva L., Balula S.S., Efficient Oxidative Desulfurization Processes Using Polyoxomolybdate Based Catalysts, Energies, 11: 1696-1707 (2018)
[22] Rezvani M.A., Nia Asli M.A., Abdollahi L., Oveisi M., (N(Bu)4)5H4PV6Mo6O40 as an Efficient Catalyst for the Oxidative Desulfurization of GasolineJ. Serb. Chem. Soc., 81:91-101 (2016)
[23] Ahmad W., Ahmad I., Yaseen M., desulfurization of Liquid Fuels by Air Assisted Peracid Oxidation System in the Presence of Fe-ZSM-5 Catalyst, Korean J. Chem. Eng., 33: 2530-2537 (2016)
[28] Tian Y., Wang G., Long J., Cui J., Jin W., Zeng D., Ultra-Deep Oxidative Desulfurization of Fuel with H2O2 Catalyzed by Phosphomolybdic Acid Supported on Silica, Chin. J. Catal., 37: 2098-2105 (2016)
[31] Bazyari A., Mortazavi Y., Khodadadi A. A., Thompson L. T., Tafreshi R., Zaker A., Ajenifujan O.T., Effect of Alumina Phases as Nickel Supports on Deep Reactive Adsorption of (4,6- dimethyl Dibenzothiophene Comparison between γ, δ and θ-Alumina, Appl. Catal. B: Environmental, 180: 312-323 (2016)
[32] Huirache-Acuna R., Pawelec B., Loricera C.V., Rivera-Munoz E.M., Nava R., Torres B., Fierro J.L.G., Comparison of The Morphology and HDS Activity of Ternary Ni(Co)-Mo-W Catalysts Supported on Al-HMS and Al-SBA-16 Substrates, Appl. Catal. B: Environmental, 125:473-485 (2012)
[33] Haw K.G., Abu Bakar W.A.W., Ali R., Chong J.F., Abdul Kadir A.A., Catalytic Oxidative Desulfurization of Diesel Utilizing Hydrogen Peroxide and Functionalized-Activated Carbon in a Biphasic Diesel-Acetonitrile System, Fuel Pro. Tech., 91: 1105-1112 (2010).