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All Journal Science and Technology Indonesia Indonesian Journal of Material Research
Aldes Lesbani
Master of Materials Science, Graduate Program, Universitas Sriwijaya, Palembang, 30662, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics

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Catalytic Oxidative Desulfurization of 4-Methyldibenzothiophene by Ni/Al Modified Titanium Dioxide and Zinc Oxide Risfidian Mohadi; Neza Rahayu Palapa; Sahrul Wibiyan; Mardiyanto; Rohmatullaili; Erni Salasia Fitri; Aldes Lesbani
Science and Technology Indonesia Vol. 8 No. 3 (2023): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.3.414-421

Abstract

In this study, composite layer double hydroxide-metal oxide catalysts (Ni/Al-TiO2 and Ni/Al-ZnO) were successfully prepared and utilized for the oxidative desulfurization of dibenzothiophene. The catalysts were characterized using XRD, FTIR, and SEM-EDS analysis. The diffraction patterns confirmed the successful synthesis of the composite materials, while the FTIR spectra exhibited absorption bands at specific wavenumbers 3480 cm-1, 1630 cm-1, 1376 cm-1, 830 cm-1, 775 cm-1, and 683 cm-1. The surface morphology of the catalysts showed variations, with Ni/Al-LDH having a smooth particle surface and long particle shape, while Ni/Al-ZnO and Ni/Al-TiO2 formed grain-like or aggregated structures. EDS analysis confirmed the presence of Ni/Al, Ti, and Zn elements in the composites, with Ti and Zn accounting for 29.3% and 10.7% of the composite mass, respectively. The optimized reaction conditions included a reaction time of 40 minutes, catalyst dosage of 0.25 g, temperature of 50°C, and the use of n-hexane as the solvent. The catalysts demonstrated a heterogeneous nature and proved to be reusable, as the conversion of dibenzothiophene remained above 90% even after three catalytic reactions, with Ni/Al-TiO2 and Ni/Al-ZnO composites maintaining conversion rates of 99.36% and 99.32%, respectively.
Reusable Heterogeneous Catalyst (M2+)Al-Layered Double Hydroxide used for Oxidative Desulfurization of 4,6-Dimethyldibenzothiophene Nur Ahmad; Sahrul Wibiyan; Idha Royani; Risfidian Mohadi; Aldes Lesbani
Indonesian Journal of Material Research Vol. 1 No. 3 (2023): November
Publisher : Magister Program of Material Science Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijmr.20231315

Abstract

Catalyst material (M2+)Al-LDH was successfully prepared in this study. Characterisation analysis by XRD and FTIR. XRD analysis of Zn/Al-LDH, Mg/Al-LDH and Ni/Al-LDH showed agreement with pure LDH as seen from the JCPDS data and showed crystal forms similar to hydrotalcite, brucite and hydrotalcite respectively. FTIR analysis of the (M2+)Al-LDH material showed the presence of functional groups which explain the presence of O-H stretching, O-H bending, CO32- bonds and identified metal oxide (MO) groups from the synthesised LDH. (M2+)Al-LDH has the ability to act as a catalyst for excellent desulphurisation of 4,6-dimethyldibencothiophene with % conversion value above 90%. In addition, (M2+)Al-LDH is a heterogeneous and reusable catalyst.
Co-Authors Erni Salasia Fitri Idha Royani Mardiyanto Neza Rahayu Palapa Nur Ahmad Risfidian Mohadi Risfidian Mohadi Rohmatullaili Sahrul Wibiyan Sahrul Wibiyan