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Efficient degradation of 1,2-dichlorobenzene using heterogeneous catalytic ozonation over metal loaded gamma alumina catalysts

  • Nomthandazo Mkhize and Viswanadha Srirama Rajasekhar Pullabhotla ORCID logo EMAIL logo
Published/Copyright: February 20, 2025
Pure and Applied Chemistry
From the journal Pure and Applied Chemistry Volume 97 Issue 5

Abstract

This study investigated the catalytic potential of metal-loaded gamma alumina catalysts in the ozonation of 1,2-dichlorobenzene (DCB) under ambient reaction conditions. Different metal (Fe, Ni, and V) loaded gamma alumina catalysts were synthesized via wet impregnation technique and characterized using ICP-OES, FT-IR, BET, XRD, TEM, and SEM techniques. To identify the reaction products, Fourier transform infrared (FT-IR) spectroscopy and gas chromatography-mass spectrometry (GC-MS) techniques. The ozonation of 1,2-dichlorobenzene was studied within a glass reactor, where each substrate was exposed to ozone for varying time durations between 3 and 24 h. The catalytic performance of a range of metal-loaded γ-Al2O3 catalysts was assessed by examining their conversion and selectivity capabilities. During the oxidative degradation of 1,2-dichlorobenzene, 3,4-dichloro-2,5-furandione (DHF) and mucochloric acid (MCA) were identified as the ozonation products. Among the studied catalysts, 2.5 % Ni/γ-Al2O3 exhibited outstanding catalytic activity towards the conversion of 1,2-dichlorobenzene yielding a significant 65 % conversion of 1,2-dichlorobenzene after 24 h of ozonation.

Keywords: 1,2-dichlorobenzene; conversion; metal-loaded γ-Al2O3 catalysts; oxidation; selectivity; VCCA-2024
Corresponding author: Viswanadha Srirama Rajasekhar Pullabhotla, Department of Chemistry, Faculty of Science, Agriculture and Engineering, University of Zululand, P/Bag X1001, KwaDlangezwa 3886, South Africa, e-mail:
Article note: A collection of invited papers based on presentations at the Virtual Conference on Chemistry and its Applications held on 12-16 August 2024.

Funding source: National Research Foundation

Award Identifier / Grant number: Developmental Grant for Rated Researchers

Award Identifier / Grant number: Incentive Fund Grant (Grant No: 132468)

Acknowledgments

The authors acknowledge the EMU at the University of KwaZulu-Natal, Westville campus, for providing us access to their TEM facility.

  1. Research ethics: Not applicable.

  2. Informed consent: Not applicable.

  3. Author contributions: Viswanadha Srirama Rajasekhar Pullabhotla: Conceptualization, Supervision, Methodology, Formal analysis, Writing – Original Draft, Review & Editing, Funding acquisition. Mkhize N: Formal analysis, Investigation, Writing – Original Draft.

  4. Use of Large Language Models, AI and Machine Learning Tools: Authors declare that no use of AI in the preparation of the manuscript

  5. Conflict of interest: Authors declare no conflict of interest.

  6. Research funding: Rajasekhar Pullabhotla would like to acknowledge the National Research Foundation (NRF, South Africa) for the financial support in the form of the Incentive Fund Grant (Grant No: 103691) and Research Developmental Grant for Rated Researchers (Grant No: 112145).

  7. Data availability: The data will be made available in the form of a Masters thesis in the University of Zululand’s Library repository.

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Supplementary Material

This article contains supplementary material (https://doi.org/10.1515/pac-2024-0342).

Received: 2024-11-27
Accepted: 2025-01-17
Published Online: 2025-02-20
Published in Print: 2025-05-26

© 2025 IUPAC & De Gruyter

Articles in the same Issue

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  2. In this issue
  3. Research Articles
  4. Efficient degradation of 1,2-dichlorobenzene using heterogeneous catalytic ozonation over metal loaded gamma alumina catalysts
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https://doi.org/10.1515/pac-2024-0342
Keywords for this article
1,2-dichlorobenzene; conversion; metal-loaded γ-Al2O3 catalysts; oxidation; selectivity; VCCA-2024

Articles in the same Issue

  1. Frontmatter
  2. In this issue
  3. Research Articles
  4. Efficient degradation of 1,2-dichlorobenzene using heterogeneous catalytic ozonation over metal loaded gamma alumina catalysts
  5. Effect of chemical modification using glyoxylic acid on the stability of α-amylase from Aspergillus fumigatus
  6. A new, innovative, simple method to determine the concentration of phosphate and sulphate ions in an aqueous extract of plants using conductometric titration
  7. Metalloporphyrin-mediated oxidative degradation of risperidone under mild conditions: an LC-MS/MS study
  8. Synthesis of novel ternary herbicide-layered double hydroxide hybrids via the ion exchange method
  9. Water Quality Index and the quality of freshwater resource uMhlathuze river, Kwazulu-Natal, South Africa: A Review
  10. Experimental ‘in-Vitro’ investigation on bio-chemical constituents, radical scavenging activity, and reducing power assay of cow urine
  11. Enhanced biofilm disruption in ESKAPE pathogens through synergistic activity of EPS degrading enzymes
  12. Green synthesis of silver nanoparticles using a bioflocculant produced by a kombucha tea yeast isolate for antimicrobial and biosafety testing
  13. Characterization of metabolite compounds from endophytic fungi associated with white turi plant (Sesbania grandiflora) and their antibacterial activity
  14. Enhanced photocatalytic degradation of methylene blue dye using TiO2 nanoparticles obtained via chemical and green synthesis: a comparative analysis
  15. Characterization of electrocatalysts for the oxygen evolution reaction OER: a bi-metal study IrM oxides (Ru, and Au)
  16. Development of a second harmonic generation microscope optimized for biomaterial studies
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