The Preparation of FeMo/γ-Al2O3 Extruded Catalyst and Optimization of the Operating Conditions of the ODS of Light Oil Naphtha

Preparation of the 5%Fe10%Mo/gamma-Al2O3 oxidative desulfurization (ODS) catalyst and optimization the ODS operating conditions (the effect of oxidant and catalyst amount, different time and temperature of the ODS activity test) of light oil naphtha are the main targets of this research. At first, the 5%Fe10%Mo/gamma-Al2O3 extruded catalyst was prepared by incipient wetness impregnation technique. The FeMo/gamma-Al2O3 extruded catalyst was analyzed by N-2-adsorption/desorption (BET), X-Ray Diffraction Inductively (XRD), Scanning Electron Microscopy (SEM), NH3-Temperature Programmed Desorption (NH3-TPD), and Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). The ODS activity tests of the FeMo/gamma-Al2O3 extruded catalyst were investigated by the ODS setup with light oil naphtha as feed with 250 ppm total sulfur. In order to reach the desired ODS operating conditions, different quantities of oxidant, catalyst, time, and temperature of the ODS tests were examined with the ODS setup and the total sulfur of each test was recorded by the Rigaku apparatus. The best ODS operating conditions were 1 ml H2O2 as an oxidant, 1 g FeMo/gamma-Al2O3 extruded catalyst, 100 min, and 50 degrees C. The total sulfur of light oil naphtha reached 45 from 250 ppm by this catalyst and ODS process.