Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene

Autores
Morales-Pacheco, P.; Domínguez, J.M.; Bucio, L.; Alvarez, F.; Sedran, Ulises Anselmo; Falco, Marisa Guadalupe
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Nanocrystals of FAU(Y) and MFI(ZSM5) zeolites were synthesized from clear solutions at 80-95 °C under autogen and atmospheric pressures, respectively. The X-ray diffraction (XRD) patterns confirm the structural features reported for FAU(Y) and MFI(ZSM5). Similarly, Fourier transform infrared spectroscopy (FTIR) with KBr shows the bands arising from typical structural groups of FAU(Y) and MFI(ZSM5), i.e., 455-462 cm-1 and 555-560 cm-1. The mean crystallites size was measured by transmission electron microscopy (TEM) and it was determined also by Rietveld's method using Scherrer's equation; with similar results between 20 and 40 nm. Also, a cubic morphology for FAU(Y) crystallites and a disk-like habit for MFI(ZSM5) were verified together with the typical dimensions of the pore system and symmetry, i.e., pore diameters were between 0.74 and 0.56 nm for FAU(Y) and MFI(ZSM5). Theoretical images were calculated using HRTEM (Cerius2) program and these were compared with the experimental ones, thus matching the corresponding typical structural parameters. The textural properties were determined by N2 adsorption-desorption (BET) and typical surface areas of 658 and 495 m 2/g were obtained for the nanosized materials. After ion-exchanging NH4NO3 ammonia was removed by calcination (i.e., 550 °C) and the total acidity was measured, i.e. 1190 and 1084 μmol(Py)/g (cat) at 25 °C and 84 and 34 μmol(Py)/g (cat) at 400 °C for FAU(Y) and MFI(ZSM5), respectively. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) in air and N2 atmospheres showed a thermal stability of these materials up to about 1000 °C. The catalytic activity of FAU(Y) and MFI(ZSM5) was tested by means of the cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPBz) in a CREC Riser Simulator Reactor at 350 °C; the cracking of 1,3,5-TIPBz increased to about 0.6 and 1.3 times from big (108.9 and 82.8 nm) to small (18 and 20.7 nm) crystallites of FAU(HY) and MFI(HZSM5), respectively, while diffusivity increased to about 3 and 4.6 times, which demonstrates a correlation between the mean crystallite size of these zeolites with cracking activity from the external crystallite surface and the diffusivity of large reactive molecules, i.e., 1,3,5-TIPBz.
Fil: Morales-Pacheco, P.. Universidad Nacional Autónoma de México; México
Fil: Domínguez, J.M.. Instituto Mexicano del Petroleo; México
Fil: Bucio, L.. Universidad Nacional Autónoma de México; México
Fil: Alvarez, F.. Instituto Mexicano del Petroleo; México
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Materia
Catalytic Cracking
Fau(Y)
Mfi(Zsm5)
Nanocrystals
Zeolite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/78586

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network_name_str CONICET Digital (CONICET)
spelling Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzeneMorales-Pacheco, P.Domínguez, J.M.Bucio, L.Alvarez, F.Sedran, Ulises AnselmoFalco, Marisa GuadalupeCatalytic CrackingFau(Y)Mfi(Zsm5)NanocrystalsZeolitehttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Nanocrystals of FAU(Y) and MFI(ZSM5) zeolites were synthesized from clear solutions at 80-95 °C under autogen and atmospheric pressures, respectively. The X-ray diffraction (XRD) patterns confirm the structural features reported for FAU(Y) and MFI(ZSM5). Similarly, Fourier transform infrared spectroscopy (FTIR) with KBr shows the bands arising from typical structural groups of FAU(Y) and MFI(ZSM5), i.e., 455-462 cm-1 and 555-560 cm-1. The mean crystallites size was measured by transmission electron microscopy (TEM) and it was determined also by Rietveld's method using Scherrer's equation; with similar results between 20 and 40 nm. Also, a cubic morphology for FAU(Y) crystallites and a disk-like habit for MFI(ZSM5) were verified together with the typical dimensions of the pore system and symmetry, i.e., pore diameters were between 0.74 and 0.56 nm for FAU(Y) and MFI(ZSM5). Theoretical images were calculated using HRTEM (Cerius2) program and these were compared with the experimental ones, thus matching the corresponding typical structural parameters. The textural properties were determined by N2 adsorption-desorption (BET) and typical surface areas of 658 and 495 m 2/g were obtained for the nanosized materials. After ion-exchanging NH4NO3 ammonia was removed by calcination (i.e., 550 °C) and the total acidity was measured, i.e. 1190 and 1084 μmol(Py)/g (cat) at 25 °C and 84 and 34 μmol(Py)/g (cat) at 400 °C for FAU(Y) and MFI(ZSM5), respectively. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) in air and N2 atmospheres showed a thermal stability of these materials up to about 1000 °C. The catalytic activity of FAU(Y) and MFI(ZSM5) was tested by means of the cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPBz) in a CREC Riser Simulator Reactor at 350 °C; the cracking of 1,3,5-TIPBz increased to about 0.6 and 1.3 times from big (108.9 and 82.8 nm) to small (18 and 20.7 nm) crystallites of FAU(HY) and MFI(HZSM5), respectively, while diffusivity increased to about 3 and 4.6 times, which demonstrates a correlation between the mean crystallite size of these zeolites with cracking activity from the external crystallite surface and the diffusivity of large reactive molecules, i.e., 1,3,5-TIPBz.Fil: Morales-Pacheco, P.. Universidad Nacional Autónoma de México; MéxicoFil: Domínguez, J.M.. Instituto Mexicano del Petroleo; MéxicoFil: Bucio, L.. Universidad Nacional Autónoma de México; MéxicoFil: Alvarez, F.. Instituto Mexicano del Petroleo; MéxicoFil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier Science2011-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78586Morales-Pacheco, P.; Domínguez, J.M.; Bucio, L.; Alvarez, F.; Sedran, Ulises Anselmo; et al.; Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene; Elsevier Science; Catalysis Today; 166; 1; 5-2011; 25-380920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2010.07.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:55Zoai:ri.conicet.gov.ar:11336/78586instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:05:56.153CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
title Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
spellingShingle Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
Morales-Pacheco, P.
Catalytic Cracking
Fau(Y)
Mfi(Zsm5)
Nanocrystals
Zeolite
title_short Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
title_full Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
title_fullStr Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
title_full_unstemmed Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
title_sort Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene
dc.creator.none.fl_str_mv Morales-Pacheco, P.
Domínguez, J.M.
Bucio, L.
Alvarez, F.
Sedran, Ulises Anselmo
Falco, Marisa Guadalupe
author Morales-Pacheco, P.
author_facet Morales-Pacheco, P.
Domínguez, J.M.
Bucio, L.
Alvarez, F.
Sedran, Ulises Anselmo
Falco, Marisa Guadalupe
author_role author
author2 Domínguez, J.M.
Bucio, L.
Alvarez, F.
Sedran, Ulises Anselmo
Falco, Marisa Guadalupe
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Catalytic Cracking
Fau(Y)
Mfi(Zsm5)
Nanocrystals
Zeolite
topic Catalytic Cracking
Fau(Y)
Mfi(Zsm5)
Nanocrystals
Zeolite
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Nanocrystals of FAU(Y) and MFI(ZSM5) zeolites were synthesized from clear solutions at 80-95 °C under autogen and atmospheric pressures, respectively. The X-ray diffraction (XRD) patterns confirm the structural features reported for FAU(Y) and MFI(ZSM5). Similarly, Fourier transform infrared spectroscopy (FTIR) with KBr shows the bands arising from typical structural groups of FAU(Y) and MFI(ZSM5), i.e., 455-462 cm-1 and 555-560 cm-1. The mean crystallites size was measured by transmission electron microscopy (TEM) and it was determined also by Rietveld's method using Scherrer's equation; with similar results between 20 and 40 nm. Also, a cubic morphology for FAU(Y) crystallites and a disk-like habit for MFI(ZSM5) were verified together with the typical dimensions of the pore system and symmetry, i.e., pore diameters were between 0.74 and 0.56 nm for FAU(Y) and MFI(ZSM5). Theoretical images were calculated using HRTEM (Cerius2) program and these were compared with the experimental ones, thus matching the corresponding typical structural parameters. The textural properties were determined by N2 adsorption-desorption (BET) and typical surface areas of 658 and 495 m 2/g were obtained for the nanosized materials. After ion-exchanging NH4NO3 ammonia was removed by calcination (i.e., 550 °C) and the total acidity was measured, i.e. 1190 and 1084 μmol(Py)/g (cat) at 25 °C and 84 and 34 μmol(Py)/g (cat) at 400 °C for FAU(Y) and MFI(ZSM5), respectively. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) in air and N2 atmospheres showed a thermal stability of these materials up to about 1000 °C. The catalytic activity of FAU(Y) and MFI(ZSM5) was tested by means of the cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPBz) in a CREC Riser Simulator Reactor at 350 °C; the cracking of 1,3,5-TIPBz increased to about 0.6 and 1.3 times from big (108.9 and 82.8 nm) to small (18 and 20.7 nm) crystallites of FAU(HY) and MFI(HZSM5), respectively, while diffusivity increased to about 3 and 4.6 times, which demonstrates a correlation between the mean crystallite size of these zeolites with cracking activity from the external crystallite surface and the diffusivity of large reactive molecules, i.e., 1,3,5-TIPBz.
Fil: Morales-Pacheco, P.. Universidad Nacional Autónoma de México; México
Fil: Domínguez, J.M.. Instituto Mexicano del Petroleo; México
Fil: Bucio, L.. Universidad Nacional Autónoma de México; México
Fil: Alvarez, F.. Instituto Mexicano del Petroleo; México
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Falco, Marisa Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
description Nanocrystals of FAU(Y) and MFI(ZSM5) zeolites were synthesized from clear solutions at 80-95 °C under autogen and atmospheric pressures, respectively. The X-ray diffraction (XRD) patterns confirm the structural features reported for FAU(Y) and MFI(ZSM5). Similarly, Fourier transform infrared spectroscopy (FTIR) with KBr shows the bands arising from typical structural groups of FAU(Y) and MFI(ZSM5), i.e., 455-462 cm-1 and 555-560 cm-1. The mean crystallites size was measured by transmission electron microscopy (TEM) and it was determined also by Rietveld's method using Scherrer's equation; with similar results between 20 and 40 nm. Also, a cubic morphology for FAU(Y) crystallites and a disk-like habit for MFI(ZSM5) were verified together with the typical dimensions of the pore system and symmetry, i.e., pore diameters were between 0.74 and 0.56 nm for FAU(Y) and MFI(ZSM5). Theoretical images were calculated using HRTEM (Cerius2) program and these were compared with the experimental ones, thus matching the corresponding typical structural parameters. The textural properties were determined by N2 adsorption-desorption (BET) and typical surface areas of 658 and 495 m 2/g were obtained for the nanosized materials. After ion-exchanging NH4NO3 ammonia was removed by calcination (i.e., 550 °C) and the total acidity was measured, i.e. 1190 and 1084 μmol(Py)/g (cat) at 25 °C and 84 and 34 μmol(Py)/g (cat) at 400 °C for FAU(Y) and MFI(ZSM5), respectively. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) in air and N2 atmospheres showed a thermal stability of these materials up to about 1000 °C. The catalytic activity of FAU(Y) and MFI(ZSM5) was tested by means of the cracking of 1,3,5-triisopropylbenzene (1,3,5-TIPBz) in a CREC Riser Simulator Reactor at 350 °C; the cracking of 1,3,5-TIPBz increased to about 0.6 and 1.3 times from big (108.9 and 82.8 nm) to small (18 and 20.7 nm) crystallites of FAU(HY) and MFI(HZSM5), respectively, while diffusivity increased to about 3 and 4.6 times, which demonstrates a correlation between the mean crystallite size of these zeolites with cracking activity from the external crystallite surface and the diffusivity of large reactive molecules, i.e., 1,3,5-TIPBz.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/78586
Morales-Pacheco, P.; Domínguez, J.M.; Bucio, L.; Alvarez, F.; Sedran, Ulises Anselmo; et al.; Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene; Elsevier Science; Catalysis Today; 166; 1; 5-2011; 25-38
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78586
identifier_str_mv Morales-Pacheco, P.; Domínguez, J.M.; Bucio, L.; Alvarez, F.; Sedran, Ulises Anselmo; et al.; Synthesis of FAU(Y)- and MFI(ZSM5)-nanosized crystallites for catalytic cracking of 1,3,5-triisopropylbenzene; Elsevier Science; Catalysis Today; 166; 1; 5-2011; 25-38
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2010.07.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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