ZnO-activated carbon blended as a catalyst for oxidative desulfurization of dibenzothiophene

Wega Trisunaryanti*, Satriyo Dibyo Sumbogo, Safa Annissa Novianti, Dyah Ayu Fatmawati, Maria Ulfa, Yatim Lailun Nikmah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The problem of sulfur content in heavy oil is a challenge for researchers to meet the needs of environmentally friendly fuels. The catalyst preparation plays an important role in the desulfurization process. The synthesis of ZnO-activated carbon as a catalyst and its activity in oxidative desulfurization (ODS) reaction has been successful-ly carried out. In this work, the ZnO and activated carbon (AC) were blended by a solid-solid reaction. The ZnO, AC, and ZnO-AC were then characterized using acidity test with pyridine vapor adsorption, Fourier Transform In-fra-Red (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), and Surface Area Analyzer (SAA). ODS of dibenzothiophene (DBT) reaction was performed by using H2O2 under varia-tion of the reaction time (30, 60, 120, and 150 min) for the ZnO-AC catalyst. The efficiency of ODS-DBT was ana-lyzed by a UV-Visible spectrophotometer. The XRD analysis result showed that ZnO-AC blended displays new crystal peaks of Zn in the AC diffractogram. The surface area (734.351 m2/g) and acidity (4.8780 mmol/g) of ZnO-AC were higher than ZnO and AC themselves. ZnO-AC produced the highest efficiency of ODS-DBT which was 93.83% in the reaction time of 120 min. Therefore, the simple procedure of this physical blending was proved effec-tive to homogenize between ZnO and AC into ZnO-AC so that it has good physicochemical properties as an ODS-DBT catalyst.

Original languageEnglish
Pages (from-to)881-887
Number of pages7
JournalBulletin of Chemical Reaction Engineering and Catalysis
Volume16
Issue number4
DOIs
Publication statusPublished - 2021

Keywords

  • Activated Carbon
  • Dibenzothiophene
  • Oxidative Desulfurization
  • Physical Blending
  • ZnO

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