2024 : 4 : 14
Mohammad Ali Bodaghifard

Mohammad Ali Bodaghifard

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0001-9732-4746
Education: PhD.
ScopusId: 6507703429
Faculty: Science
Address: Arak University
Phone:

Research

Title
Deep oxidative desulfurization of simulated and real gas oils by NiFe2O4@SiO2‑DETA@POM as a retrievable hybrid nanocatalyst
Type
JournalPaper
Keywords
Environment · Oxidative desulfurization (ODS) · Heteropolyacid (HPA) · Magnetic nanoparticles · Hybrid nanomaterials
Year
2023
Journal Environmental Science and Pollution Research
DOI
Researchers Mohammad Ali Bodaghifard ، Mahdia Hamidinasab ، Pegah Bayat

Abstract

Magnetic nanoparticles surrounded with a silica shell are useful materials to immobilize active agents on their surface. Here, a heteropolyacid-functionalized hybrid nanomaterial ( NiFe2O4@SiO2-DETA@POM) was prepared and characterized by X-ray powder diffraction patterns (XRD), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA/DTG), vibrating sample magnetometer (VSM), the field emission scanning electron microscopy (FE-SEM), and the electron-dispersive X-ray spectroscopy (EDS). The synthesized hybrid nanostructure was used as a solid nanocatalyst in oxidative desulfurization (ODS) of real fuel and simulated gasoline samples. The ODS process of benzothiophene (BT) and dibenzothiophene (DBT) as model compounds in the presence of NiFe2O4@ SiO2-DETA@POM and by using urea-hydrogen peroxide/acetic acid as a safer oxidizing agent was investigated. A good result was obtained by removing 97% of benzothiophene and 98% of dibenzothiophene. Also, 96% of the sulfur compounds were eliminated when the ODS process was tested on a real crude oil sample (600 ppm) under an optimized dosage of nanocatalyst, urea-hydrogen peroxide/acetic acid (0.1 g, 1 g/4 ml) at 50 ºC for 60 min. NiFe2O4@ SiO2-DETA@POM could be recycled for five consecutive oxidation runs without significant deterioration in its catalytic activity. The UHP’s safety and efficiency as an oxidant, high removal efficacy, short transformation times, easy workup procedure, catalyst reusability, simple separation of nanocatalyst, green conditions, and environmental compatibility and sustainability. The obtained results prove that NiFe2O4@ SiO2-DETA@POM is a suitable and efficient hybrid catalyst for the oxidative desulfurization of simulated and real fuels.