Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization
This research investigates the modification of γ−Al₂O₃ using ammonia, urea, and magnesium acetate to enhance its catalytic properties for hydrodemetallization (HDM) and hydrodesulfurization (HDS). Structural modifications affected the mineral composition, crystal size distribution, and textural prop...
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2025-08-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
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| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/20360 |
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| author | Wawan Rustyawan I. G. B. N. Makertihartha Oki Muraza Ismal Gamar Nadya Nurdini Grandprix T.M. Kadja Carolus B. Rasrenda |
| author_facet | Wawan Rustyawan I. G. B. N. Makertihartha Oki Muraza Ismal Gamar Nadya Nurdini Grandprix T.M. Kadja Carolus B. Rasrenda |
| author_sort | Wawan Rustyawan |
| collection | DOAJ |
| description | This research investigates the modification of γ−Al₂O₃ using ammonia, urea, and magnesium acetate to enhance its catalytic properties for hydrodemetallization (HDM) and hydrodesulfurization (HDS). Structural modifications affected the mineral composition, crystal size distribution, and textural properties of the support, with boehmite crystal sizes consistently ranging from 7 to 10 nm. Textural analysis indicated that alumina supports modified with urea and ammonia demonstrated enhanced characteristics, including elevated specific surface area (SBET), pore volume (VT), and pore size distribution (d), which are essential for catalytic performance. The modified catalyst (HM) exhibited significant hydrodemetalation efficiency, attaining metal removal rates of 98% for iron, 71% for vanadium, and 99% for nickel. In the HDS reaction, HM demonstrated the highest sulfur conversion of 20.9% at 315 °C, due to its capacity to sustain active site availability. The primary cause of catalyst deactivation was metal deposition, which resulted in pore blockage and diminished efficiency. The findings underscore the importance of support modification in enhancing catalytic performance, indicating HM as a viable catalyst for future heavy oil refining applications. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). |
| format | Article |
| id | doaj-art-5d33a0872f0347c7be5c1dedd26f6b10 |
| institution | OA Journals |
| issn | 1978-2993 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj-art-5d33a0872f0347c7be5c1dedd26f6b102025-08-20T02:34:10ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932025-08-0120225426310.9767/bcrec.203608539Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and HydrodesulfurizationWawan Rustyawan0I. G. B. N. Makertihartha1Oki Muraza2https://orcid.org/0000-0002-8348-8085Ismal Gamar3Nadya Nurdini4Grandprix T.M. Kadja5https://orcid.org/0000-0003-0264-2739Carolus B. Rasrenda6https://orcid.org/0000-0003-0576-2314Department of Chemical Enginering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, IndonesiaDepartment of Chemical Enginering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, IndonesiaPertamina Technology & Innovation, Jl. Raya Bekasi KM. 20 Pulogadung, East Jakarta, IndonesiaPertamina Technology & Innovation, Jl. Raya Bekasi KM. 20 Pulogadung, East Jakarta, IndonesiaDivision of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, IndonesiaCenter for Catalysis and Reaction Engineering, Institut Teknologi Bandung, Jl. Ganesha no. 10, Bandung 40132, IndonesiaDepartment of Chemical Enginering, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung 40132, IndonesiaThis research investigates the modification of γ−Al₂O₃ using ammonia, urea, and magnesium acetate to enhance its catalytic properties for hydrodemetallization (HDM) and hydrodesulfurization (HDS). Structural modifications affected the mineral composition, crystal size distribution, and textural properties of the support, with boehmite crystal sizes consistently ranging from 7 to 10 nm. Textural analysis indicated that alumina supports modified with urea and ammonia demonstrated enhanced characteristics, including elevated specific surface area (SBET), pore volume (VT), and pore size distribution (d), which are essential for catalytic performance. The modified catalyst (HM) exhibited significant hydrodemetalation efficiency, attaining metal removal rates of 98% for iron, 71% for vanadium, and 99% for nickel. In the HDS reaction, HM demonstrated the highest sulfur conversion of 20.9% at 315 °C, due to its capacity to sustain active site availability. The primary cause of catalyst deactivation was metal deposition, which resulted in pore blockage and diminished efficiency. The findings underscore the importance of support modification in enhancing catalytic performance, indicating HM as a viable catalyst for future heavy oil refining applications. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).https://journal.bcrec.id/index.php/bcrec/article/view/20360hydrodesulfurization (hds)hydrodemetallization (hdm)fe (iron) removalvanadium removalnickel removal |
| spellingShingle | Wawan Rustyawan I. G. B. N. Makertihartha Oki Muraza Ismal Gamar Nadya Nurdini Grandprix T.M. Kadja Carolus B. Rasrenda Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization Bulletin of Chemical Reaction Engineering & Catalysis hydrodesulfurization (hds) hydrodemetallization (hdm) fe (iron) removal vanadium removal nickel removal |
| title | Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization |
| title_full | Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization |
| title_fullStr | Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization |
| title_full_unstemmed | Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization |
| title_short | Effect of Ammonia, Urea, and Magnesium Modification on γ-Al2O3 Support in Enhancing the Catalytic Performance for Hydrodemetallization and Hydrodesulfurization |
| title_sort | effect of ammonia urea and magnesium modification on γ al2o3 support in enhancing the catalytic performance for hydrodemetallization and hydrodesulfurization |
| topic | hydrodesulfurization (hds) hydrodemetallization (hdm) fe (iron) removal vanadium removal nickel removal |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/20360 |
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