Hydrolysis of sucrose over composite catalysts
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/7243 https://doi.org/10.1016/j.cej.2012.01.033 |
Resumo: | The hydrolysis of sucrose into glucose and fructose was carried out over composite catalysts at 80 ◦C. These catalysts consisted of USY and Beta zeolites dispersed in polymeric matrices (PDMS and PVA). The swelling degree of polymers increased with the amount of zeolite immobilised in PDMS and PVA. This result can be explained by the increase in the polymeric matrix channelling. Additionally, the effective diffusivity of sucrose increases with the amount of USY and Beta zeolite that was dispersed in PDMS. The catalytic activity increases with the amount of zeolite dispersed in the polymeric matrix. The PVA composites showed higher catalytic activity than the PDMS ones. To study the catalytic stability of the Beta2/PVA catalyst, four consecutive batch runs were carried out with the same catalyst. The Beta2/PVA catalyst was recycled and reused with a negligible loss in its activity. |
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Hydrolysis of sucrose over composite catalystsSucroseHydrolysisZeolitePVAThe hydrolysis of sucrose into glucose and fructose was carried out over composite catalysts at 80 ◦C. These catalysts consisted of USY and Beta zeolites dispersed in polymeric matrices (PDMS and PVA). The swelling degree of polymers increased with the amount of zeolite immobilised in PDMS and PVA. This result can be explained by the increase in the polymeric matrix channelling. Additionally, the effective diffusivity of sucrose increases with the amount of USY and Beta zeolite that was dispersed in PDMS. The catalytic activity increases with the amount of zeolite dispersed in the polymeric matrix. The PVA composites showed higher catalytic activity than the PDMS ones. To study the catalytic stability of the Beta2/PVA catalyst, four consecutive batch runs were carried out with the same catalyst. The Beta2/PVA catalyst was recycled and reused with a negligible loss in its activity.Elsevier2013-01-14T12:12:30Z2013-01-142012-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/7243http://hdl.handle.net/10174/7243https://doi.org/10.1016/j.cej.2012.01.033porChemical Engineering Journal 184 (2012) 347– 351Departamento de Químicandndndndjefc@uevora.pt433Pito, DFonseca, IRamos, AVital, JCastanheiro, Jinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:47:19Zoai:dspace.uevora.pt:10174/7243Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:49.525846Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Hydrolysis of sucrose over composite catalysts |
title |
Hydrolysis of sucrose over composite catalysts |
spellingShingle |
Hydrolysis of sucrose over composite catalysts Pito, D Sucrose Hydrolysis Zeolite PVA |
title_short |
Hydrolysis of sucrose over composite catalysts |
title_full |
Hydrolysis of sucrose over composite catalysts |
title_fullStr |
Hydrolysis of sucrose over composite catalysts |
title_full_unstemmed |
Hydrolysis of sucrose over composite catalysts |
title_sort |
Hydrolysis of sucrose over composite catalysts |
author |
Pito, D |
author_facet |
Pito, D Fonseca, I Ramos, A Vital, J Castanheiro, J |
author_role |
author |
author2 |
Fonseca, I Ramos, A Vital, J Castanheiro, J |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Pito, D Fonseca, I Ramos, A Vital, J Castanheiro, J |
dc.subject.por.fl_str_mv |
Sucrose Hydrolysis Zeolite PVA |
topic |
Sucrose Hydrolysis Zeolite PVA |
description |
The hydrolysis of sucrose into glucose and fructose was carried out over composite catalysts at 80 ◦C. These catalysts consisted of USY and Beta zeolites dispersed in polymeric matrices (PDMS and PVA). The swelling degree of polymers increased with the amount of zeolite immobilised in PDMS and PVA. This result can be explained by the increase in the polymeric matrix channelling. Additionally, the effective diffusivity of sucrose increases with the amount of USY and Beta zeolite that was dispersed in PDMS. The catalytic activity increases with the amount of zeolite dispersed in the polymeric matrix. The PVA composites showed higher catalytic activity than the PDMS ones. To study the catalytic stability of the Beta2/PVA catalyst, four consecutive batch runs were carried out with the same catalyst. The Beta2/PVA catalyst was recycled and reused with a negligible loss in its activity. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-03-01T00:00:00Z 2013-01-14T12:12:30Z 2013-01-14 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/7243 http://hdl.handle.net/10174/7243 https://doi.org/10.1016/j.cej.2012.01.033 |
url |
http://hdl.handle.net/10174/7243 https://doi.org/10.1016/j.cej.2012.01.033 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Chemical Engineering Journal 184 (2012) 347– 351 Departamento de Química nd nd nd nd jefc@uevora.pt 433 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136501707046912 |