Publicação
Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology
| Resumo: | Friedel-Crafts acylation reaction was studied under mild conditions using hierarchical HY zeolite samples prepared through surfactant mediated technology, in the presence of NH4OH, using CTAB or DTAB as surfactants and changing the duration of treatment from 6 to 48 h. The materials were characterized by powder X-ray diffraction, low temperature N2 adsorption isotherms, SEM microscopy and pyridine adsorption followed by FTIR. The catalytic behaviour was studied in the acylation of furan by acetic anhydride. The catalytic results reflect the role of the duration of the treatment as well as the surfactant molecule used. As the time of treatment increases, the enlargement of the pores leads to an increase of the rate constant and turnover frequency (TOF), except for sample modified during longer time, 48 h, due to the occurrence of secondary reactions that produce larger products or reaction intermediates that become trapped inside the pores. The role of the surfactant molecule is also relevant since the sample modified in the presence of the larger surfactant molecule, CTAB, a significant increase in product yield and rate constant is obtained when compared with the sample prepared in the same conditions using DTAB. However, in that case, by prolonging the treatment a substantial decrease in the same parameters occurs due to the occurrence of deactivation phenomena, pointing out that the optimized modification of porosity needs to be customized according to the needs of each catalytic system. |
|---|---|
| Autores principais: | Martins, Angela |
| Outros Autores: | Neves, Vera; Moutinho, João; Nunes, Nelson; Carvalho, Ana |
| Assunto: | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Científico do Instituto Politécnico de Lisboa |
| _version_ | 1866887461250007040 |
|---|---|
| author | Martins, Angela |
| author2 | Neves, Vera Moutinho, João Nunes, Nelson Carvalho, Ana |
| author2_role | author author author author |
| author_facet | Martins, Angela Neves, Vera Moutinho, João Nunes, Nelson Carvalho, Ana |
| author_role | author |
| contributor_name_str_mv | RCIPL |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Martins, Angela\",\"Person.identifier.orcid\":\"0000-0003-1637-478X\"},{\"Person.name\":\"Neves, Vera\"},{\"Person.name\":\"Moutinho, João\"},{\"Person.name\":\"Nunes, Nelson\",\"Person.identifier.orcid\":\"0000-0003-4499-0379\"},{\"Person.name\":\"Carvalho, Ana\",\"Person.identifier.orcid\":\"0000-0002-3144-2800\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RCIPL |
| datacite.creators.creator.creatorName.fl_str_mv | Martins, Angela Neves, Vera Moutinho, João Nunes, Nelson Carvalho, Ana |
| datacite.date.Accepted.fl_str_mv | 2021-08-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-10-06T11:05:47Z |
| datacite.date.embargoed.fl_str_mv | 2021-10-06T11:05:47Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| datacite.titles.title.fl_str_mv | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| dc.contributor.none.fl_str_mv | RCIPL |
| dc.creator.none.fl_str_mv | Martins, Angela Neves, Vera Moutinho, João Nunes, Nelson Carvalho, Ana |
| dc.date.Accepted.fl_str_mv | 2021-08-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-10-06T11:05:47Z |
| dc.date.embargoed.fl_str_mv | 2021-10-06T11:05:47Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.21/13825 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| dc.title.fl_str_mv | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Friedel-Crafts acylation reaction was studied under mild conditions using hierarchical HY zeolite samples prepared through surfactant mediated technology, in the presence of NH4OH, using CTAB or DTAB as surfactants and changing the duration of treatment from 6 to 48 h. The materials were characterized by powder X-ray diffraction, low temperature N2 adsorption isotherms, SEM microscopy and pyridine adsorption followed by FTIR. The catalytic behaviour was studied in the acylation of furan by acetic anhydride. The catalytic results reflect the role of the duration of the treatment as well as the surfactant molecule used. As the time of treatment increases, the enlargement of the pores leads to an increase of the rate constant and turnover frequency (TOF), except for sample modified during longer time, 48 h, due to the occurrence of secondary reactions that produce larger products or reaction intermediates that become trapped inside the pores. The role of the surfactant molecule is also relevant since the sample modified in the presence of the larger surfactant molecule, CTAB, a significant increase in product yield and rate constant is obtained when compared with the sample prepared in the same conditions using DTAB. However, in that case, by prolonging the treatment a substantial decrease in the same parameters occurs due to the occurrence of deactivation phenomena, pointing out that the optimized modification of porosity needs to be customized according to the needs of each catalytic system. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.ipl.pt/bitstreams/9d059e4c-6da7-4c04-8b3d-6e3a9dc51307/download |
| funding.funder.alternateName_str_mv | FCT |
| funding.funder.identifier_str_mv | http://doi.org/10.13039/501100001871 |
| funding.funder.name_str_mv | Fundação para a Ciência e a Tecnologia |
| funding.name_str_mv | 6817 - DCRRNI ID |
| id | ripl_e2a01c73a244f9e1bdfd2a0ffd017820 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.21/13825 |
| instacron_str | ipl |
| institution | Instituto Politécnico de Lisboa |
| instname_str | Instituto Politécnico de Lisboa |
| language | eng |
| network_acronym_str | ripl |
| network_name_str | Repositório Científico do Instituto Politécnico de Lisboa |
| oai_identifier_str | oai:repositorio.ipl.pt:10400.21/13825 |
| organization_str_mv | urn:organizationAcronym:ipl |
| person_str_mv | Martins, Angela Martins, Angela https://www.ciencia-id.pt/781F-79D3-9070 781F-79D3-9070 http://orcid.org/0000-0003-1637-478X 0000-0003-1637-478X Neves, Vera Moutinho, João Nunes, Nelson Nunes, Nelson https://www.ciencia-id.pt/1B16-7872-5A09 1B16-7872-5A09 http://orcid.org/0000-0003-4499-0379 0000-0003-4499-0379 Carvalho, Ana Carvalho, Ana https://www.ciencia-id.pt/8011-6264-7957 8011-6264-7957 http://orcid.org/0000-0002-3144-2800 0000-0002-3144-2800 |
| publishDate | 2021 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | Repositório Científico do Instituto Politécnico de Lisboa |
| repository_id_str | urn:repositoryAcronym:ripl |
| service_str_mv | urn:repositoryAcronym:ripl |
| spelling | engElsevierpt_PTFriedel-Crafts acylation reaction was studied under mild conditions using hierarchical HY zeolite samples prepared through surfactant mediated technology, in the presence of NH4OH, using CTAB or DTAB as surfactants and changing the duration of treatment from 6 to 48 h. The materials were characterized by powder X-ray diffraction, low temperature N2 adsorption isotherms, SEM microscopy and pyridine adsorption followed by FTIR. The catalytic behaviour was studied in the acylation of furan by acetic anhydride. The catalytic results reflect the role of the duration of the treatment as well as the surfactant molecule used. As the time of treatment increases, the enlargement of the pores leads to an increase of the rate constant and turnover frequency (TOF), except for sample modified during longer time, 48 h, due to the occurrence of secondary reactions that produce larger products or reaction intermediates that become trapped inside the pores. The role of the surfactant molecule is also relevant since the sample modified in the presence of the larger surfactant molecule, CTAB, a significant increase in product yield and rate constant is obtained when compared with the sample prepared in the same conditions using DTAB. However, in that case, by prolonging the treatment a substantial decrease in the same parameters occurs due to the occurrence of deactivation phenomena, pointing out that the optimized modification of porosity needs to be customized according to the needs of each catalytic system.application/pdfpt_PTFriedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technologyPersonalMartins, AngelaDSpacehttp://dspace.org/items/61c012c2-e555-4d7e-8fad-27b1facc34caDSpacehttp://dspace.org/items/61c012c2-e555-4d7e-8fad-27b1facc34caMartinsAngelaCiência IDhttps://www.ciencia-id.pt781F-79D3-9070ORCIDhttp://orcid.org0000-0003-1637-478XResearcher IDhttps://www.researcherid.comB-1775-2012Scopus Author IDhttps://www.scopus.com7203013509Neves, VeraMoutinho, JoãoPersonalNunes, NelsonDSpacehttp://dspace.org/items/3541747c-0373-4a73-b1f3-77095e675385DSpacehttp://dspace.org/items/3541747c-0373-4a73-b1f3-77095e675385NunesNelsonCiência IDhttps://www.ciencia-id.pt1B16-7872-5A09ORCIDhttp://orcid.org0000-0003-4499-0379Researcher IDhttps://www.researcherid.comA-8516-2012Scopus Author IDhttps://www.scopus.com11540776800PersonalCarvalho, AnaDSpacehttp://dspace.org/items/5d0d14e6-8215-4437-9957-ca9185c04b66DSpacehttp://dspace.org/items/5d0d14e6-8215-4437-9957-ca9185c04b66CarvalhoAnaCiência IDhttps://www.ciencia-id.pt8011-6264-7957ORCIDhttp://orcid.org0000-0002-3144-2800Scopus Author IDhttps://www.scopus.com55611516400HostingInstitutionOrganizationalRCIPLe-mailmailto:rcaap@sp.ipl.ptrcaap@sp.ipl.ptISSNIsPartOf1387-1811DOIIsPartOf10.1016/j.micromeso.2021.1111672021-10-06T11:05:47Z2021-082021-08-01T00:00:00ZHandlehttp://hdl.handle.net/10400.21/13825http://purl.org/coar/access_right/c_16ecrestricted accessHierarchical Y zeoliteSurfactant mediated technologyFriedel-crafts acylationKinetic parameters4519181 bytesFundação para a Ciência e a TecnologiaCentro de Química Estrutural6817 - DCRRNI IDCrossref Funder IDhttp://doi.org/10.13039/501100001871literaturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://repositorio.ipl.pt/bitstreams/9d059e4c-6da7-4c04-8b3d-6e3a9dc51307/downloadMicroporous and Mesoporous Materials32318 |
| spellingShingle | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology Martins, Angela Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| status | SINGLETON |
| subject.fl_str_mv | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| title | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| title_full | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| title_fullStr | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| title_full_unstemmed | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| title_short | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| title_sort | Friedel-crafts acylation reaction over hierarchical Y zeolite modified through surfactant mediated technology |
| topic | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| topic_facet | Hierarchical Y zeolite Surfactant mediated technology Friedel-crafts acylation Kinetic parameters |
| url | http://hdl.handle.net/10400.21/13825 |
| visible | 1 |