Catalytic oxidative desulfurization of dibenzothiophene by heterogeneous M2+/Al-layered double hydroxide (M2+ = Zn, Mg, Ni) modified zinc oxide

Authors

• Nur Ahmad ¹
• Nova Yuliasari ¹
• Fitri Suryani Arsyad ²
• Idha Royani ²
• Risfidian Mohadi ^{1, 3}
• Aldes Lesbani * ^{1, 3}

1. Graduate School of Mathematics and Natural Sciences, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Palembang Prabumulih Km.32 Ogan Ilir 30662, Indonesia
2. Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Palembang Prabumulih Km.32 Ogan Ilir 30662, Indonesia
3. Research Center of Inorganic Materials and Coordination Complexes, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Jl. Palembang Prabumulih Km.32 Ogan Ilir 30662, Indonesia

Abstract

In this study, the preparation of layered double hydroxide-metal oxide (ZnAl-ZnO, MgAl-ZnO, and NiAl-ZnO) was successful. The characterization of the catalyst used XRD, FTIR, and SEM analysis. The catalyst shows high oxidative desulfurization of dibenzothiophene. The percentage conversion of dibenzothiophene on ZnAl-ZnO, MgAl-ZnO, and NiAl-ZnO was 99.38%, 99.34%, and 99.90%, respectively. The acidities of ZnAl-ZnO, MgAl-ZnO, and NiAl-ZnO were 0.798, 2.469, and 0.184 mmol/g, respectively. The catalysts are heterogeneous systems, and the advantage is that they can be used for reusability. After 3 cycles of catalytic reactions at 323 K for 30 min, reusability proves that the percentage conversion of dibenzothiophene on ZnAl-ZnO, MgAl-ZnO, and NiAl-ZnO had a stable structure.

Highlights

• Preparation of layered double hydroxide modified zinc oxide (LDH-ZnO) was successful
• The catalysts shows high oxidative desulfurization of dibenzothiophene
• The percentage conversion of dibenzothiophene on ZnAl-ZnO, MgAl-ZnO, and NiAl-ZnO was 99.38%, 99.34%, and 99.90%, respectively
• The catalysts are heterogeneous systems, and the advantage is that they can be used for reusability

Graphical Abstract

Keywords

• Dibenzothiophene
• Heterogeneous catalyst
• Layered Double Hydroxide
• Oxidative desulfurization
• Reusability.