ZSM-5 fast synthesis employing soluble starch as template

Autores
Bonetto, Luciana; Renzini, María Soledad; Saux, Clara; Pierella, Liliana Beatriz
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Solid catalysts with a zeolitic framework were synthesized in the ZSM-5 (MFI) topology employing tetrapropyl ammonium hydroxide (TPAOH) as structure directing agent and soluble starch as template in order to be employed in biomass revalorization reactions. It should be noted that starch is a soluble, biodegradable, low cost and nontoxic polymeric carbohydrate obtained from agricultural raw materials. Starch is employed in thissynthesis processfor pores generation and crystal connection to produce a material with MFI morphology type. ZSM-5 is a medium pore material from the pentasil zeolites group. The traditional synthesis procedure [1] takes around 10 days to obtain the MFI structure. In this new procedure, ZSM-5 type material is obtained by a hydrothermal treatment but in a shorter crystallization time. The effect of time on structure and cristallinity was studied. Zeolite synthesis was done employing sodium aluminate (NaAlO2) as aluminum source, tetraethyl orthosilicate (TEOS) as silicon source, TPAOH and distilled water. The solution was aged at 80 °C for 210 minutes under vigorous stirring. Ethanol produced from TEOS hydrolysis was evaporated and a clear gel was obtained. Then, different starch quantities dissolved in aqueous solutions were incorporated and further stirred for 30 minutes at the same temperature. The result suspension was hydrothermally treated at 140 °C in a Teflon lined stainless steel autoclave under static conditions. Crystallization time was varied between 96, 48 and 24 hours and the obtained material was washed with distilled water and dried at 110 °C for 24 hours. Finally, the solid were desorbed under N2 flow (20 ml/min) at 500 °C and further calcined at the same temperature for 8 hours in order to remove the carbonized starch and the organic structure directing agent trapped in the crystals. According to the crystallization time, samples were named as MFI-96, MFI-48 and MFI 24, respectively. The obtained samples were characterized by X Ray Diffraction (XRD), BET and Scanning Electron Microscopy to confirm structure, crystallinity and surface area. From XRD patterns high crystallinity and MFI structure were confirmed, indicating the successful crystallization in short time when soluble starch was added in the synthesis gel. Surface areas calculated from BET were similar to that obtained for traditional ZSM-5 (approximately 360 m2 /g). The so far synthesized and characterized materials were tested as catalysts for peanut shells valorization reactions to obtain platform molecules for the fine chemical industry.
Fil: Bonetto, Luciana. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Renzini, María Soledad. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Pierella, Liliana Beatriz. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Materia
ZSM-5
Synthesis
Starch
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2022-05-30T21:38:19Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/6536
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling ZSM-5 fast synthesis employing soluble starch as templateBonetto, LucianaRenzini, María SoledadSaux, ClaraPierella, Liliana BeatrizZSM-5SynthesisStarchSolid catalysts with a zeolitic framework were synthesized in the ZSM-5 (MFI) topology employing tetrapropyl ammonium hydroxide (TPAOH) as structure directing agent and soluble starch as template in order to be employed in biomass revalorization reactions. It should be noted that starch is a soluble, biodegradable, low cost and nontoxic polymeric carbohydrate obtained from agricultural raw materials. Starch is employed in thissynthesis processfor pores generation and crystal connection to produce a material with MFI morphology type. ZSM-5 is a medium pore material from the pentasil zeolites group. The traditional synthesis procedure [1] takes around 10 days to obtain the MFI structure. In this new procedure, ZSM-5 type material is obtained by a hydrothermal treatment but in a shorter crystallization time. The effect of time on structure and cristallinity was studied. Zeolite synthesis was done employing sodium aluminate (NaAlO2) as aluminum source, tetraethyl orthosilicate (TEOS) as silicon source, TPAOH and distilled water. The solution was aged at 80 °C for 210 minutes under vigorous stirring. Ethanol produced from TEOS hydrolysis was evaporated and a clear gel was obtained. Then, different starch quantities dissolved in aqueous solutions were incorporated and further stirred for 30 minutes at the same temperature. The result suspension was hydrothermally treated at 140 °C in a Teflon lined stainless steel autoclave under static conditions. Crystallization time was varied between 96, 48 and 24 hours and the obtained material was washed with distilled water and dried at 110 °C for 24 hours. Finally, the solid were desorbed under N2 flow (20 ml/min) at 500 °C and further calcined at the same temperature for 8 hours in order to remove the carbonized starch and the organic structure directing agent trapped in the crystals. According to the crystallization time, samples were named as MFI-96, MFI-48 and MFI 24, respectively. The obtained samples were characterized by X Ray Diffraction (XRD), BET and Scanning Electron Microscopy to confirm structure, crystallinity and surface area. From XRD patterns high crystallinity and MFI structure were confirmed, indicating the successful crystallization in short time when soluble starch was added in the synthesis gel. Surface areas calculated from BET were similar to that obtained for traditional ZSM-5 (approximately 360 m2 /g). The so far synthesized and characterized materials were tested as catalysts for peanut shells valorization reactions to obtain platform molecules for the fine chemical industry.Fil: Bonetto, Luciana. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Renzini, María Soledad. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Pierella, Liliana Beatriz. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.2022-05-30T21:38:19Z2022-05-30T21:38:19Z2017info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciapdfapplication/pdf2° Bioeconomy Congress (2017).http://hdl.handle.net/20.500.12272/6536enginfo:eu-repo/semantics/openAccess2022-05-30T21:38:19Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalPierella, Liliana BeatrizNo comercial. Sólo de uso académico.reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-10-01T11:59:23Zoai:ria.utn.edu.ar:20.500.12272/6536instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-10-01 11:59:23.824Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv ZSM-5 fast synthesis employing soluble starch as template
title ZSM-5 fast synthesis employing soluble starch as template
spellingShingle ZSM-5 fast synthesis employing soluble starch as template
Bonetto, Luciana
ZSM-5
Synthesis
Starch
title_short ZSM-5 fast synthesis employing soluble starch as template
title_full ZSM-5 fast synthesis employing soluble starch as template
title_fullStr ZSM-5 fast synthesis employing soluble starch as template
title_full_unstemmed ZSM-5 fast synthesis employing soluble starch as template
title_sort ZSM-5 fast synthesis employing soluble starch as template
dc.creator.none.fl_str_mv Bonetto, Luciana
Renzini, María Soledad
Saux, Clara
Pierella, Liliana Beatriz
author Bonetto, Luciana
author_facet Bonetto, Luciana
Renzini, María Soledad
Saux, Clara
Pierella, Liliana Beatriz
author_role author
author2 Renzini, María Soledad
Saux, Clara
Pierella, Liliana Beatriz
author2_role author
author
author
dc.subject.none.fl_str_mv ZSM-5
Synthesis
Starch
topic ZSM-5
Synthesis
Starch
dc.description.none.fl_txt_mv Solid catalysts with a zeolitic framework were synthesized in the ZSM-5 (MFI) topology employing tetrapropyl ammonium hydroxide (TPAOH) as structure directing agent and soluble starch as template in order to be employed in biomass revalorization reactions. It should be noted that starch is a soluble, biodegradable, low cost and nontoxic polymeric carbohydrate obtained from agricultural raw materials. Starch is employed in thissynthesis processfor pores generation and crystal connection to produce a material with MFI morphology type. ZSM-5 is a medium pore material from the pentasil zeolites group. The traditional synthesis procedure [1] takes around 10 days to obtain the MFI structure. In this new procedure, ZSM-5 type material is obtained by a hydrothermal treatment but in a shorter crystallization time. The effect of time on structure and cristallinity was studied. Zeolite synthesis was done employing sodium aluminate (NaAlO2) as aluminum source, tetraethyl orthosilicate (TEOS) as silicon source, TPAOH and distilled water. The solution was aged at 80 °C for 210 minutes under vigorous stirring. Ethanol produced from TEOS hydrolysis was evaporated and a clear gel was obtained. Then, different starch quantities dissolved in aqueous solutions were incorporated and further stirred for 30 minutes at the same temperature. The result suspension was hydrothermally treated at 140 °C in a Teflon lined stainless steel autoclave under static conditions. Crystallization time was varied between 96, 48 and 24 hours and the obtained material was washed with distilled water and dried at 110 °C for 24 hours. Finally, the solid were desorbed under N2 flow (20 ml/min) at 500 °C and further calcined at the same temperature for 8 hours in order to remove the carbonized starch and the organic structure directing agent trapped in the crystals. According to the crystallization time, samples were named as MFI-96, MFI-48 and MFI 24, respectively. The obtained samples were characterized by X Ray Diffraction (XRD), BET and Scanning Electron Microscopy to confirm structure, crystallinity and surface area. From XRD patterns high crystallinity and MFI structure were confirmed, indicating the successful crystallization in short time when soluble starch was added in the synthesis gel. Surface areas calculated from BET were similar to that obtained for traditional ZSM-5 (approximately 360 m2 /g). The so far synthesized and characterized materials were tested as catalysts for peanut shells valorization reactions to obtain platform molecules for the fine chemical industry.
Fil: Bonetto, Luciana. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Renzini, María Soledad. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Saux, Clara. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Pierella, Liliana Beatriz. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación y Tecnología Química. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
description Solid catalysts with a zeolitic framework were synthesized in the ZSM-5 (MFI) topology employing tetrapropyl ammonium hydroxide (TPAOH) as structure directing agent and soluble starch as template in order to be employed in biomass revalorization reactions. It should be noted that starch is a soluble, biodegradable, low cost and nontoxic polymeric carbohydrate obtained from agricultural raw materials. Starch is employed in thissynthesis processfor pores generation and crystal connection to produce a material with MFI morphology type. ZSM-5 is a medium pore material from the pentasil zeolites group. The traditional synthesis procedure [1] takes around 10 days to obtain the MFI structure. In this new procedure, ZSM-5 type material is obtained by a hydrothermal treatment but in a shorter crystallization time. The effect of time on structure and cristallinity was studied. Zeolite synthesis was done employing sodium aluminate (NaAlO2) as aluminum source, tetraethyl orthosilicate (TEOS) as silicon source, TPAOH and distilled water. The solution was aged at 80 °C for 210 minutes under vigorous stirring. Ethanol produced from TEOS hydrolysis was evaporated and a clear gel was obtained. Then, different starch quantities dissolved in aqueous solutions were incorporated and further stirred for 30 minutes at the same temperature. The result suspension was hydrothermally treated at 140 °C in a Teflon lined stainless steel autoclave under static conditions. Crystallization time was varied between 96, 48 and 24 hours and the obtained material was washed with distilled water and dried at 110 °C for 24 hours. Finally, the solid were desorbed under N2 flow (20 ml/min) at 500 °C and further calcined at the same temperature for 8 hours in order to remove the carbonized starch and the organic structure directing agent trapped in the crystals. According to the crystallization time, samples were named as MFI-96, MFI-48 and MFI 24, respectively. The obtained samples were characterized by X Ray Diffraction (XRD), BET and Scanning Electron Microscopy to confirm structure, crystallinity and surface area. From XRD patterns high crystallinity and MFI structure were confirmed, indicating the successful crystallization in short time when soluble starch was added in the synthesis gel. Surface areas calculated from BET were similar to that obtained for traditional ZSM-5 (approximately 360 m2 /g). The so far synthesized and characterized materials were tested as catalysts for peanut shells valorization reactions to obtain platform molecules for the fine chemical industry.
publishDate 2017
dc.date.none.fl_str_mv 2017
2022-05-30T21:38:19Z
2022-05-30T21:38:19Z
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv 2° Bioeconomy Congress (2017).
http://hdl.handle.net/20.500.12272/6536
identifier_str_mv 2° Bioeconomy Congress (2017).
url http://hdl.handle.net/20.500.12272/6536
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2022-05-30T21:38:19Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Pierella, Liliana Beatriz
No comercial. Sólo de uso académico.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2022-05-30T21:38:19Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Pierella, Liliana Beatriz
No comercial. Sólo de uso académico.
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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