Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance
In this research, a solid acid catalyst was synthesized to catalyse glycerol acetylation into acetins. The sulphated-titania catalysts were prepared via the wet impregnation method at different sulfuric acid concentrations (5%, 10%, 15%, and 20%) and denoted as 5SA, 10SA, 15SA, and 20SA, respectivel...
| Main Authors: | , , , , , , |
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| Format: | Article |
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Multidisciplinary Digital Publishing Institute
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/96096/ |
| _version_ | 1848862294739517440 |
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| author | Mohamad Rasid, Shera Farisya Ramli, Irmawati Ishak, Nor Shafizah Yap, Taufiq Yun Hin Muhamad, Ernee Noryana Lee, Siew Ling Salamun, Nurrulhidayah |
| author_facet | Mohamad Rasid, Shera Farisya Ramli, Irmawati Ishak, Nor Shafizah Yap, Taufiq Yun Hin Muhamad, Ernee Noryana Lee, Siew Ling Salamun, Nurrulhidayah |
| author_sort | Mohamad Rasid, Shera Farisya |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this research, a solid acid catalyst was synthesized to catalyse glycerol acetylation into acetins. The sulphated-titania catalysts were prepared via the wet impregnation method at different sulfuric acid concentrations (5%, 10%, 15%, and 20%) and denoted as 5SA, 10SA, 15SA, and 20SA, respectively. The synthesized catalysts were characterized using FTIR, XRD, TGA, BET, NH3-TPD, XRF, and SEM-EDX. The synthesized catalysts were tested on glycerol acetylation reaction at conditions: 0.5 g catalyst loading, 100–120 °C temperature, 1:6 glycerol/acetic acid molar ratios, and 2–4 h reaction time. The final product obtained was analysed using GC-FID. An increment in sulfuric acid concentration reduces the surface area, pore volume, and particles size. However, the increment has increased the number of active sites (Lewis acid) and strong acid strength. 15SA catalyst exhibited excellent glycerol conversion (>90%) and the highest selectivity of triacetin (42%). Besides sufficient surface area (1.9 m2 g−1) and good porosity structure, the great performance of the 15SA catalyst was attributed to its high acid site density (342.6 µmol g−1) and the high active site of metal oxide (95%). |
| first_indexed | 2025-11-15T13:14:45Z |
| format | Article |
| id | upm-96096 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T13:14:45Z |
| publishDate | 2021 |
| publisher | Multidisciplinary Digital Publishing Institute |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-960962023-02-24T03:56:49Z http://psasir.upm.edu.my/id/eprint/96096/ Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance Mohamad Rasid, Shera Farisya Ramli, Irmawati Ishak, Nor Shafizah Yap, Taufiq Yun Hin Muhamad, Ernee Noryana Lee, Siew Ling Salamun, Nurrulhidayah In this research, a solid acid catalyst was synthesized to catalyse glycerol acetylation into acetins. The sulphated-titania catalysts were prepared via the wet impregnation method at different sulfuric acid concentrations (5%, 10%, 15%, and 20%) and denoted as 5SA, 10SA, 15SA, and 20SA, respectively. The synthesized catalysts were characterized using FTIR, XRD, TGA, BET, NH3-TPD, XRF, and SEM-EDX. The synthesized catalysts were tested on glycerol acetylation reaction at conditions: 0.5 g catalyst loading, 100–120 °C temperature, 1:6 glycerol/acetic acid molar ratios, and 2–4 h reaction time. The final product obtained was analysed using GC-FID. An increment in sulfuric acid concentration reduces the surface area, pore volume, and particles size. However, the increment has increased the number of active sites (Lewis acid) and strong acid strength. 15SA catalyst exhibited excellent glycerol conversion (>90%) and the highest selectivity of triacetin (42%). Besides sufficient surface area (1.9 m2 g−1) and good porosity structure, the great performance of the 15SA catalyst was attributed to its high acid site density (342.6 µmol g−1) and the high active site of metal oxide (95%). Multidisciplinary Digital Publishing Institute 2021 Article PeerReviewed Mohamad Rasid, Shera Farisya and Ramli, Irmawati and Ishak, Nor Shafizah and Yap, Taufiq Yun Hin and Muhamad, Ernee Noryana and Lee, Siew Ling and Salamun, Nurrulhidayah (2021) Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance. Catalysts, 11 (12). art. no. 1542. pp. 1-18. ISSN 2073-4344 https://www.mdpi.com/2073-4344/11/12/1542 10.3390/catal11121542 |
| spellingShingle | Mohamad Rasid, Shera Farisya Ramli, Irmawati Ishak, Nor Shafizah Yap, Taufiq Yun Hin Muhamad, Ernee Noryana Lee, Siew Ling Salamun, Nurrulhidayah Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title | Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title_full | Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title_fullStr | Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title_full_unstemmed | Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title_short | Assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| title_sort | assessment on the effect of sulfuric acid concentration on physicochemical properties of sulfated-titania catalyst and glycerol acetylation performance |
| url | http://psasir.upm.edu.my/id/eprint/96096/ http://psasir.upm.edu.my/id/eprint/96096/ http://psasir.upm.edu.my/id/eprint/96096/ |