The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural
Recently, silica/carbon composite material has received much attention in heterogeneous catalysis due to its unique hybrid properties. However, the difficulties in designing green synthetic methods remain challenging. In this study, varied proportion of silica/carbon heterogeneous catalyst was prepa...
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| Format: | Thesis |
| Language: | English |
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2018
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| Online Access: | http://eprints.usm.my/43759/ http://eprints.usm.my/43759/1/SYED%20MUHAMMAD%20AL-AMSYAR.pdf |
| _version_ | 1848879891237306368 |
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| author | Syed Abd Kadir, Syed Muhammad Al-Amsyar |
| author_facet | Syed Abd Kadir, Syed Muhammad Al-Amsyar |
| author_sort | Syed Abd Kadir, Syed Muhammad Al-Amsyar |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Recently, silica/carbon composite material has received much attention in heterogeneous catalysis due to its unique hybrid properties. However, the difficulties in designing green synthetic methods remain challenging. In this study, varied proportion of silica/carbon heterogeneous catalyst was prepared directly from rice husk by varying the carbonization temperatures (250, 300, 350, 400, and 450 °C). The prepared composites were functionalized separately with sulfonic acid and aluminium oxide giving the following catalysts: sulfonated-silica/carbon (SO3H-SiO2/C-250, SO3H-SiO2/C-300, SO3H-SiO2/C-350, SO3H-SiO2/C-400, SO3H-SiO2/C-450) and silica/carbon-supported aluminium oxide (Al-SiO2/C-350, Al-SiO2/C-400, and Al-SiO2/C-450). For the SO3H-SiO2/C catalysts, the XRD data confirms these composites were amorphous. |
| first_indexed | 2025-11-15T17:54:26Z |
| format | Thesis |
| id | usm-43759 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T17:54:26Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-437592019-04-12T05:24:52Z http://eprints.usm.my/43759/ The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural Syed Abd Kadir, Syed Muhammad Al-Amsyar QD1-999 Chemistry Recently, silica/carbon composite material has received much attention in heterogeneous catalysis due to its unique hybrid properties. However, the difficulties in designing green synthetic methods remain challenging. In this study, varied proportion of silica/carbon heterogeneous catalyst was prepared directly from rice husk by varying the carbonization temperatures (250, 300, 350, 400, and 450 °C). The prepared composites were functionalized separately with sulfonic acid and aluminium oxide giving the following catalysts: sulfonated-silica/carbon (SO3H-SiO2/C-250, SO3H-SiO2/C-300, SO3H-SiO2/C-350, SO3H-SiO2/C-400, SO3H-SiO2/C-450) and silica/carbon-supported aluminium oxide (Al-SiO2/C-350, Al-SiO2/C-400, and Al-SiO2/C-450). For the SO3H-SiO2/C catalysts, the XRD data confirms these composites were amorphous. 2018-02 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/43759/1/SYED%20MUHAMMAD%20AL-AMSYAR.pdf Syed Abd Kadir, Syed Muhammad Al-Amsyar (2018) The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural. PhD thesis, Universiti Sains Malaysia. |
| spellingShingle | QD1-999 Chemistry Syed Abd Kadir, Syed Muhammad Al-Amsyar The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title | The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title_full | The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title_fullStr | The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title_full_unstemmed | The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title_short | The Synthesis Of Functionalized-Silica/Carbon Catalysts From Rice Husk For The Conversion Of Hexose Sugar Into Methyl Levulinate And 5-Hydroxymethylfurfural |
| title_sort | synthesis of functionalized-silica/carbon catalysts from rice husk for the conversion of hexose sugar into methyl levulinate and 5-hydroxymethylfurfural |
| topic | QD1-999 Chemistry |
| url | http://eprints.usm.my/43759/ http://eprints.usm.my/43759/1/SYED%20MUHAMMAD%20AL-AMSYAR.pdf |