Optimization of Desulfurization of 4-Methyldibenzothiophene and 4,6-Dimethyldibenzothiophene Using Mg/Al Layered Double Hydroxide Equipped with ZnO/TiO2

https://doi.org/10.22146/ijc.88790

Amri Amri(1), Nur Ahmad(2), Sahrul Wibiyan(3), Alfan Wijaya(4), Mardiyanto Mardiyanto(5), Idha Royani(6), Risfidian Mohadi(7), Aldes Lesbani(8*)

(1) Doctoral Program of Environmental Science, Postgraduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia; Research Center of Inorganic Materials and Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(2) Research Center of Inorganic Materials and Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(3) Research Center of Inorganic Materials and Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia; Magister of Material Science, Graduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(4) Doctoral Program of Environmental Science, Postgraduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia; Research Center of Inorganic Materials and Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(5) Department of Pharmacy, Universitas Sriwijaya, Jl. Palembang Prabumulih Km. 32, Ogan Ilir 30662, Indonesia
(6) Magister of Material Science, Graduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(7) Magister of Material Science, Graduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(8) Research Center of Inorganic Materials and Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia; Magister of Material Science, Graduate Program, Universitas Sriwijaya, Jl. Padang Selasa Bukit Besar, Palembang 30139, Indonesia
(*) Corresponding Author

Abstract


The growth of heavy industry leads to an increase in sulfur dioxide emissions, impacting health, economy, and the fulfilment of the ecological needs for society. Sulfur removal is carried out using the oxidative desulfurization (ODS) method. In this study, layered double hydroxide materials of Mg/Al, Mg/Al-TiO2, and Mg/Al-ZnO were successfully synthesized and analyzed using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and scanning electron microscope-energy dispersive spectroscopy (SEM-EDS) techniques. Those materials are used as catalysts for the desulfurization of 4-methyldibenzothiophene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). Composite Mg/Al catalysts with metal oxides provide superior desulfurization process efficiency and enhanced stability, making them highly effective for repeated use. The conversion percentage of desulfurization of 4-MDBT and 4,6-DMDBT increases with time. The n-hexane is a suitable solvent for desulfurization of 4-MDBT and 4,6-DMDBT. All catalysts exhibit significant heterogeneity that greatly aids in the separation process.


Keywords


desulfurization; 4-methyldibenzothiophene; 4,6-dimethyldibenzothiophene; layered double hydroxide; TiO2/ZnO

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DOI: https://doi.org/10.22146/ijc.88790

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