Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts
The efficient hydrolysis of cellulose into its monomer unit such as glucose or valuable cello-oligosaccharides is the critical step for the cost-effective production of biofuels and biochemicals. However, the current cellulose hydrolysis process involves high energy-demanding pretreatment (e.g., bal...
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ftpubmed:oai:pubmedcentral.nih.gov:10009878 2023-05-15T15:52:51+02:00 Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts Kim, Han Ung Kim, Jong Wha Seo, Sumin Jae, Jungho 2023-03-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009878/ http://www.ncbi.nlm.nih.gov/pubmed/36922947 https://doi.org/10.1039/d2ra08224a en eng The Royal Society of Chemistry http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009878/ http://www.ncbi.nlm.nih.gov/pubmed/36922947 http://dx.doi.org/10.1039/d2ra08224a This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ RSC Adv Chemistry Text 2023 ftpubmed https://doi.org/10.1039/d2ra08224a 2023-03-19T01:50:37Z The efficient hydrolysis of cellulose into its monomer unit such as glucose or valuable cello-oligosaccharides is the critical step for the cost-effective production of biofuels and biochemicals. However, the current cellulose hydrolysis process involves high energy-demanding pretreatment (e.g., ball-milling) and long reaction times (>24 h). Herein, we investigated the feasibility of the dissolution/regeneration (DR) of cellulose in ionic liquids (ILs) and deep eutectic solvent (DES) as an alternative to ball-milling pretreatment for the effective hydrolysis of cellulose. Because chlorine-based solvents were reported to be the most active for cellulose pretreatment, [EMIM]Cl and [DMIM]DMP were selected as the IL molecules, and choline chloride–lactic acid and choline chloride–imidazole were selected as the DES molecules. The level of the crystallinity reduction of the regenerated cellulose were analyzed using XRD and SEM measurements. The hydrolysis kinetics of the regenerated cellulose from ILs and DES were examined at 150 °C using sulfonated carbon catalysts and compared with those of the ball-milled cellulose. Overall, the cellulose pretreatment using the ILs and the DES had superior kinetics for cellulose hydrolysis to the conventional ball milling treatment, suggesting a possibility to replace the current high energy-demanding ball-milling process with the energy-saving DR process. In addition, the utilization of supercritical carbon dioxide-induced carbonic acid as an in situ acid catalyst for the enhanced hydrolysis of cellulose was presented for the first time. Text Carbonic acid PubMed Central (PMC) RSC Advances 13 12 8153 8162 |
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Chemistry Kim, Han Ung Kim, Jong Wha Seo, Sumin Jae, Jungho Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
topic_facet |
Chemistry |
description |
The efficient hydrolysis of cellulose into its monomer unit such as glucose or valuable cello-oligosaccharides is the critical step for the cost-effective production of biofuels and biochemicals. However, the current cellulose hydrolysis process involves high energy-demanding pretreatment (e.g., ball-milling) and long reaction times (>24 h). Herein, we investigated the feasibility of the dissolution/regeneration (DR) of cellulose in ionic liquids (ILs) and deep eutectic solvent (DES) as an alternative to ball-milling pretreatment for the effective hydrolysis of cellulose. Because chlorine-based solvents were reported to be the most active for cellulose pretreatment, [EMIM]Cl and [DMIM]DMP were selected as the IL molecules, and choline chloride–lactic acid and choline chloride–imidazole were selected as the DES molecules. The level of the crystallinity reduction of the regenerated cellulose were analyzed using XRD and SEM measurements. The hydrolysis kinetics of the regenerated cellulose from ILs and DES were examined at 150 °C using sulfonated carbon catalysts and compared with those of the ball-milled cellulose. Overall, the cellulose pretreatment using the ILs and the DES had superior kinetics for cellulose hydrolysis to the conventional ball milling treatment, suggesting a possibility to replace the current high energy-demanding ball-milling process with the energy-saving DR process. In addition, the utilization of supercritical carbon dioxide-induced carbonic acid as an in situ acid catalyst for the enhanced hydrolysis of cellulose was presented for the first time. |
format |
Text |
author |
Kim, Han Ung Kim, Jong Wha Seo, Sumin Jae, Jungho |
author_facet |
Kim, Han Ung Kim, Jong Wha Seo, Sumin Jae, Jungho |
author_sort |
Kim, Han Ung |
title |
Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
title_short |
Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
title_full |
Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
title_fullStr |
Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
title_full_unstemmed |
Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
title_sort |
hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts |
publisher |
The Royal Society of Chemistry |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009878/ http://www.ncbi.nlm.nih.gov/pubmed/36922947 https://doi.org/10.1039/d2ra08224a |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
RSC Adv |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10009878/ http://www.ncbi.nlm.nih.gov/pubmed/36922947 http://dx.doi.org/10.1039/d2ra08224a |
op_rights |
This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
op_doi |
https://doi.org/10.1039/d2ra08224a |
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12 |
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8153 |
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8162 |
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