Optimization of the process of chemical hydrolysis of cellulose to glucose

We studied the acid hydrolysis of cellulose in an aqueous medium with the aim of maximizing glucose yield and minimizing the formation of by-products. The influence of reaction parameters such as temperature, acid concentration, acid strength and type of cellulose precursor on glucose yield was inve...

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Detalles Bibliográficos
Autores: Morales-delaRosa, Silvia, Campos Martín, José Miguel, García Fierro, José Luis
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/99787
Acceso en línea:http://hdl.handle.net/10261/99787
Access Level:acceso abierto
Palabra clave:Cellulose
hydrolysis
sulfuric acid
glucose
levulinic acid
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spelling Optimization of the process of chemical hydrolysis of cellulose to glucoseMorales-delaRosa, SilviaCampos Martín, José MiguelGarcía Fierro, José LuisCellulosehydrolysissulfuric acidglucoselevulinic acidWe studied the acid hydrolysis of cellulose in an aqueous medium with the aim of maximizing glucose yield and minimizing the formation of by-products. The influence of reaction parameters such as temperature, acid concentration, acid strength and type of cellulose precursor on glucose yield was investigated. We observed that moderate reaction temperature and low acid concentration resulted in the highest glucose yield with little formation of levulinic acid. Strong acid (pKa < 0) is required to achieve high glucose yield. The crystallite size of the cellulose also affects its reactivity; cellulose with higher crystallite size is more resistant to hydrolysis catalyzed by acid. The highest selectivity for glucose over levulinic acid was recorded at a reaction temperature of 413 K and a sulfuric acid concentration in the range of 0.2-0.5 mol/L. Under these reaction conditions, no levulinic acid was detected, but the glucose yield reached 20% in only 2 h.We are grateful to our research sponsors, Comunidad de Madrid (Spain) (S2009/ENE-1743) and CSIC (Spain) (201080E008 and 201180E038).Peer reviewedConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/99787reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCelluloseVolume 21, Issue 4 (2014), Page 2397-2407http://link.springer.com/article/10.1007%2Fs10570-014-0280-9Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/997872026-05-22T06:33:51Z
dc.title.none.fl_str_mv Optimization of the process of chemical hydrolysis of cellulose to glucose
title Optimization of the process of chemical hydrolysis of cellulose to glucose
spellingShingle Optimization of the process of chemical hydrolysis of cellulose to glucose
Morales-delaRosa, Silvia
Cellulose
hydrolysis
sulfuric acid
glucose
levulinic acid
title_short Optimization of the process of chemical hydrolysis of cellulose to glucose
title_full Optimization of the process of chemical hydrolysis of cellulose to glucose
title_fullStr Optimization of the process of chemical hydrolysis of cellulose to glucose
title_full_unstemmed Optimization of the process of chemical hydrolysis of cellulose to glucose
title_sort Optimization of the process of chemical hydrolysis of cellulose to glucose
dc.creator.none.fl_str_mv Morales-delaRosa, Silvia
Campos Martín, José Miguel
García Fierro, José Luis
author Morales-delaRosa, Silvia
author_facet Morales-delaRosa, Silvia
Campos Martín, José Miguel
García Fierro, José Luis
author_role author
author2 Campos Martín, José Miguel
García Fierro, José Luis
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cellulose
hydrolysis
sulfuric acid
glucose
levulinic acid
topic Cellulose
hydrolysis
sulfuric acid
glucose
levulinic acid
description We studied the acid hydrolysis of cellulose in an aqueous medium with the aim of maximizing glucose yield and minimizing the formation of by-products. The influence of reaction parameters such as temperature, acid concentration, acid strength and type of cellulose precursor on glucose yield was investigated. We observed that moderate reaction temperature and low acid concentration resulted in the highest glucose yield with little formation of levulinic acid. Strong acid (pKa < 0) is required to achieve high glucose yield. The crystallite size of the cellulose also affects its reactivity; cellulose with higher crystallite size is more resistant to hydrolysis catalyzed by acid. The highest selectivity for glucose over levulinic acid was recorded at a reaction temperature of 413 K and a sulfuric acid concentration in the range of 0.2-0.5 mol/L. Under these reaction conditions, no levulinic acid was detected, but the glucose yield reached 20% in only 2 h.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/99787
url http://hdl.handle.net/10261/99787
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Cellulose
Volume 21, Issue 4 (2014), Page 2397-2407
http://link.springer.com/article/10.1007%2Fs10570-014-0280-9
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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