Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate
Hydrolysis/pyrolysis of lignocellulosic biomass always produces a mixture of sugars with distinct structures as intermediates or products. This study tried to elucidate the effects of molecular structure of sugars on their acid-catalyzed conversions in ethanol/water. Location of carbonyl group in su...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/40826 |
| _version_ | 1848755974996754432 |
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| author | Hu, Xun Wu, Liping Wang, Yi Song, Yao Mourant, Daniel Gunawan, Richard Gholizadeh, Mortaza Li, Chun-Zhu |
| author_facet | Hu, Xun Wu, Liping Wang, Yi Song, Yao Mourant, Daniel Gunawan, Richard Gholizadeh, Mortaza Li, Chun-Zhu |
| author_sort | Hu, Xun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Hydrolysis/pyrolysis of lignocellulosic biomass always produces a mixture of sugars with distinct structures as intermediates or products. This study tried to elucidate the effects of molecular structure of sugars on their acid-catalyzed conversions in ethanol/water. Location of carbonyl group in sugars (fructose versus glucose) and steric configuration of hydroxyl groups (glucose versus galactose) significantly affected yields of levulinic acid/ester (fructose > glucose > galactose). The dehydration of fructose to 5-(hydroxymethyl) furfural produces much less soluble polymer than that from glucose and galactose, which results in high yields of levulinic acid/ester from fructose. Anhydrate sugar such as levoglucosan tends to undergo the undesirable decomposition to form less levulinic acid/ester. Catalytic behaviors of the poly-sugars (sucrose, maltose, raffinose, β-cyclodextrins) were determined much by their basic units. However, their big molecular sizes create the steric hindrance that significantly affects their followed conversion over solid acid catalyst. |
| first_indexed | 2025-11-14T09:04:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-40826 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:04:50Z |
| publishDate | 2013 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-408262017-09-13T14:03:54Z Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate Hu, Xun Wu, Liping Wang, Yi Song, Yao Mourant, Daniel Gunawan, Richard Gholizadeh, Mortaza Li, Chun-Zhu Molecular structures Polymerization Platform chemicals Carbohydrates Acid-catalyzed conversion Hydrolysis/pyrolysis of lignocellulosic biomass always produces a mixture of sugars with distinct structures as intermediates or products. This study tried to elucidate the effects of molecular structure of sugars on their acid-catalyzed conversions in ethanol/water. Location of carbonyl group in sugars (fructose versus glucose) and steric configuration of hydroxyl groups (glucose versus galactose) significantly affected yields of levulinic acid/ester (fructose > glucose > galactose). The dehydration of fructose to 5-(hydroxymethyl) furfural produces much less soluble polymer than that from glucose and galactose, which results in high yields of levulinic acid/ester from fructose. Anhydrate sugar such as levoglucosan tends to undergo the undesirable decomposition to form less levulinic acid/ester. Catalytic behaviors of the poly-sugars (sucrose, maltose, raffinose, β-cyclodextrins) were determined much by their basic units. However, their big molecular sizes create the steric hindrance that significantly affects their followed conversion over solid acid catalyst. 2013 Journal Article http://hdl.handle.net/20.500.11937/40826 10.1016/j.biortech.2013.01.080 Elsevier BV restricted |
| spellingShingle | Molecular structures Polymerization Platform chemicals Carbohydrates Acid-catalyzed conversion Hu, Xun Wu, Liping Wang, Yi Song, Yao Mourant, Daniel Gunawan, Richard Gholizadeh, Mortaza Li, Chun-Zhu Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title | Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title_full | Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title_fullStr | Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title_full_unstemmed | Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title_short | Acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: Effects of molecular structure of sugar substrate |
| title_sort | acid-catalyzed conversion of mono- and poly-sugars into platform chemicals: effects of molecular structure of sugar substrate |
| topic | Molecular structures Polymerization Platform chemicals Carbohydrates Acid-catalyzed conversion |
| url | http://hdl.handle.net/20.500.11937/40826 |