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Ahmad N, Hanifah Y, Arsyad FS, Lesbani A. Heterogeneous catalytic oxidative desulfurization of dibenzothiophene of metal oxide-Mg/Al layered double hydroxide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2025; 32:8555-8563. [PMID: 40097699 DOI: 10.1007/s11356-025-36250-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2024] [Accepted: 03/06/2025] [Indexed: 03/19/2025]
Abstract
Mg/Al-TiO2 and Mg/Al-ZnO were successfully prepared for dibenzothiophene catalytic oxidative desulfurization. XRD, FTIR, TEM, and BET analyses were utilized to characterize the catalyst. In composites, the distinctive XRD patterns of precursors are still observable. FTIR spectra of the absorption bands were at 3448, 1627, 1381, 601, and 547 cm-1. The TEM pictures of the sample also revealed the almost spherical and hexagonal platelets of Mg/Al-LDH and its composite. Mg/Al LDH, Mg/Al-TiO2, and Mg/Al-ZnO had typical pore sizes of 35.78 nm, 52.81 nm, and 38.37 nm, respectively. The graph of nitrogen isotherms Mg/Al LDH, Mg/Al-TiO2, and Mg/Al-ZnO followed type IV isotherms. In addition, the conversion rates on Mg/Al-ZnO, Mg/Al-TiO2, ZnO, Mg/Al-LDH, and TiO2 were 99.34%, 99.50%, 91.20%, 96.29%, and 88.06%, respectively. This work presents alternative materials for the oxidative desulfurization of dibenzothiophene in practical applications.
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Affiliation(s)
- Nur Ahmad
- Graduate School of Mathematics and Natural Sciences, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Palembang, Sumatera Selatan, 30139, Indonesia
- Research Center of Inorganic Materials and Coordination Complexes, Universitas Sriwijaya, Palembang, Sumatera Selatan, 30139, Indonesia
| | - Yulizah Hanifah
- Research Center for Chemistry, National Research and Innovation Agency, Building 452 KST BJ Habibie, Serpong Tangerang Selatan, Banten, 15311, Indonesia
| | - Fitri Suryani Arsyad
- Master Program of Material Science, Graduate School Universitas Sriwijaya, Palembang, Sumatera Selatan, 30139, Indonesia
| | - Aldes Lesbani
- Master Program of Material Science, Graduate School Universitas Sriwijaya, Palembang, Sumatera Selatan, 30139, Indonesia.
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Díaz J, Pizzio LR, Pecchi G, Campos CH, Azócar L, Briones R, Romero R, Troncoso E, Méndez-Rivas C, Melín V, Murillo-Sierra JC, Contreras D. Catalytic Selective Oxidation of β-O-4 Bond in Phenethoxybenzene as a Lignin Model Using (TBA) 5[PMo 10V 2O 40] Nanocatalyst: Optimization of Operational Conditions. Molecules 2023; 28:6368. [PMID: 37687197 PMCID: PMC10490183 DOI: 10.3390/molecules28176368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/26/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
The catalytic oxidation of phenethoxybenzene as a lignin model compound with a β-O-4 bond was conducted using the Keggin-type polyoxometalate nanocatalyst (TBA)5[PMo10V2O40]. The optimization of the process's operational conditions was carried out using response surface methodology. The statistically significant variables in the process were determined using a fractional factorial design. Based on this selection, a central circumscribed composite experimental design was used to maximize the phenethoxybenzene conversion, varying temperature, reaction time, and catalyst load. The optimal conditions that maximized the phenethoxybenzene conversion were 137 °C, 3.5 h, and 200 mg of catalyst. In addition, under the optimized conditions, the Kraft lignin catalytic depolymerization was carried out to validate the effectiveness of the process. The depolymerization degree was assessed by gel permeation chromatography from which a significant decrease in the molar mass distribution Mw from 7.34 kDa to 1.97 kDa and a reduction in the polydispersity index PDI from 6 to 3 were observed. Furthermore, the successful cleavage of the β-O-4 bond in the Kraft lignin was verified by gas chromatography-mass spectrometry analysis of the reaction products. These results offer a sustainable alternative to efficiently converting lignin into valuable products.
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Affiliation(s)
- Juan Díaz
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
- ANID—Millennium Science Initiative Program—Millennium Nuclei on Catalytic Process towards Sustainable Chemistry (CSC), Santiago 8970117, Chile
| | - Luis R. Pizzio
- Centro de Investigación y Desarrollo en Ciencias Aplicadas Dr. Jorge J. Ronco, Universidad de La Plata, La Plata B1900AJK, Argentina;
| | - Gina Pecchi
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
- ANID—Millennium Science Initiative Program—Millennium Nuclei on Catalytic Process towards Sustainable Chemistry (CSC), Santiago 8970117, Chile
| | - Cristian H. Campos
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
| | - Laura Azócar
- Centro de Energía, Departamento de Química Ambiental, Facultad de Ciencias, Universidad Católica de la Santísima Concepción, Concepción 4090541, Chile;
| | - Rodrigo Briones
- Centro de Investigación de Polímeros Avanzados (CIPA), Concepción 4051381, Chile;
| | - Romina Romero
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
| | - Eduardo Troncoso
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
- ANID—Millennium Science Initiative Program—Millennium Nuclei on Catalytic Process towards Sustainable Chemistry (CSC), Santiago 8970117, Chile
| | - Camila Méndez-Rivas
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
| | - Victoria Melín
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
| | - Juan C. Murillo-Sierra
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
| | - David Contreras
- Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4070386, Chile; (J.D.); (G.P.); (C.H.C.); (R.R.); (E.T.); (C.M.-R.); (V.M.); (J.C.M.-S.)
- ANID—Millennium Science Initiative Program—Millennium Nuclei on Catalytic Process towards Sustainable Chemistry (CSC), Santiago 8970117, Chile
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Niu A, Xu H, Yuan Q, Wu F, Wei X. Lewis ionic liquid-loaded Fe 3O 4@SiO 2 magnetic catalytic microspheres coupled with persulfate for catalytic oxidative desulfurization. NEW J CHEM 2023. [DOI: 10.1039/d2nj05688g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Functional ionic liquid loading magnetic Fe3O4@SiO2 microspheres with persulfate were applied to desulfurization.
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Affiliation(s)
- Anqi Niu
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Hang Xu
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Qinlin Yuan
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Fengmin Wu
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Xuefeng Wei
- School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang 471023, P. R. China
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Catalytic Oxidative Desulfurization of Dibenzothiophene Utilizing Composite Based Zn/Al Layered Double Hydroxide. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.4.15335.733-742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, the Zn/Al-TiO2 and Zn/Al-ZnO was successfully synthesized. The catalysts were characterized by X-ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), and Scanning Electron Microscope—Energy Dispersive X-ray Spectroscopy (SEM-EDS). The typical diffraction peaks of Zn/Al-LDH, TiO2, and ZnO still appear in the Zn/Al-TiO2 and Zn/Al-ZnO composites, indicating that the composite preparation did not change the form of precursors. FTIR spectra of Zn/Al-TiO2 and Zn/Al-ZnO showed absorption band at 3448, 1627, 1381, 832, 779, and 686 cm-1. The catalysts have an irregular structure where the percent mass of Ti and Zn on the composite at 10.6% and 55.6%, respectively. The acidity of Zn/Al-LDH composite increased after being composed with TiO2 and ZnO. The percentage conversion dibenzothiophene on Zn/Al-ZnO, Zn/Al-TiO2, ZnO, Zn/Al-LDH, and TiO2 was 99.38%, 96.01%, 95.36%, 94.71%, and 91.92%, respectively. The heterogeneous systems of catalytic reaction was used for reusability. After 3 cycles catalytic reactions at 50 oC for 30 min, the percentage conversion of dibenzothiophene on Zn/Al-LDH, TiO2, ZnO, Zn/Al-TiO2, and Zn/Al-ZnO were 77.42%, 83.19%, 82.34%, 84.91%, and 89.71 %, respectively. The composites of Zn/Al-TiO2 and Zn/Al-ZnO have better reusability test than Zn/Al-LDH, TiO2, and ZnO, which proofing that Zn/Al-TiO2 and Zn/Al-ZnO have a stable structure. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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