Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption

Detalhes bibliográficos
Autor(a) principal: EvÃnia Carvalho dos Santos
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15944
Resumo: The mesoporous materials Al-MCM-41 produced from kaolin, low cost raw material, by means of hydrothermal acid treatment route, has shown potential for being used as adsorbent in removal process of methylene blue. The process of synthesis of Al-MCM-41 is based on calcination of kaolin, dealumination by acid treatment, hydrothermal synthesis and extraction of the surfactant. The characterization of de obtained mesoporous material was carried out by techniques such as: X-ray diffraction, vibrational spectroscopy in the infrared, 29Si and 27Al nuclear magnetic resonance in the solid state, scanning electron microscopy, transmission electron microscopy and N2 adsorption/desorption. The X-ray diffraction at low angles allowed the determination of the cell parameter, which was 4.02 nm. The analyses of scanning and transmission electron microscopy revealed important morphological properties of the synthesized material. N2 adsorption/desorption showed a BET specific surface area of 1,303 m2 g-1, pore volume of 1.23 cm3 g-1 and average diameter of 2.45 nm. PZC measurements showed a pHPZC of 2.69. The adsorption of methylene blue by Al-MCM-41 adsorbent showed high kinetic and high adsorption capacity, with values around 316 mg g-1.
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spelling info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisSynthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorptionSÃntese e caracterizaÃÃo de Al-MCM-41 a partir de caulim por rota hidrotÃrmica e avaliaÃÃo de desempenho na adsorÃÃo de azul de metileno.2015-10-14Adonay Rodrigues Loiola88127370304http://lattes.cnpq.br/9807982856173580Cristiane Pinto Oliveira50612867315CV: http://lattes.cnpq.br/6383586942968278Francisco Wagner de Sousa6156506730468526113372http://lattes.cnpq.br/4203841579365038EvÃnia Carvalho dos SantosUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em QuÃmica UFCBRCaulim Metacaulim Material mesoporoso Al-MCM-41 AdsorÃÃo Azul de metileno Kaolin Metakaolin Mesoporous material Al-MCM-41 Adsorption Methylene blueQUIMICAThe mesoporous materials Al-MCM-41 produced from kaolin, low cost raw material, by means of hydrothermal acid treatment route, has shown potential for being used as adsorbent in removal process of methylene blue. The process of synthesis of Al-MCM-41 is based on calcination of kaolin, dealumination by acid treatment, hydrothermal synthesis and extraction of the surfactant. The characterization of de obtained mesoporous material was carried out by techniques such as: X-ray diffraction, vibrational spectroscopy in the infrared, 29Si and 27Al nuclear magnetic resonance in the solid state, scanning electron microscopy, transmission electron microscopy and N2 adsorption/desorption. The X-ray diffraction at low angles allowed the determination of the cell parameter, which was 4.02 nm. The analyses of scanning and transmission electron microscopy revealed important morphological properties of the synthesized material. N2 adsorption/desorption showed a BET specific surface area of 1,303 m2 g-1, pore volume of 1.23 cm3 g-1 and average diameter of 2.45 nm. PZC measurements showed a pHPZC of 2.69. The adsorption of methylene blue by Al-MCM-41 adsorbent showed high kinetic and high adsorption capacity, with values around 316 mg g-1.O material mesoporoso Al-MCM-41 produzido a partir de caulim, matÃria-prima de baixo custo, por meio de rota hidrotÃrmica com tratamento Ãcido, mostrou-se promissor para ser usado como adsorvente do corante azul de metileno. O processo de sÃntese da Al-MCM-41 Ã baseado na calcinaÃÃo do caulim, desaluminizaÃÃo por tratamento Ãcido, sÃntese hidrotÃrmica e eliminaÃÃo do surfactante. A caracterizaÃÃo do material mesoporoso foi realizada por meio de tÃcnicas como: difraÃÃo de raios-X, espectroscopia vibracional na regiÃo do infravermelho, ressonÃncia magnÃtica nuclear no estado sÃlido de 29Si e 27Al, microscopia eletrÃnica de varredura, microscopia eletrÃnica de transmissÃo e adsorÃÃo de N2. A anÃlise de difraÃÃo de raios-X em baixo Ãngulo da Al-MCM-41 permitiu a determinaÃÃo do parÃmetro de cÃlula que apresentou valor de 4,02 nm. As anÃlises de microscopia eletrÃnica de varredura e de transmissÃo revelaram importantes propriedades morfolÃgicas do material sintetizado. Utilizando as medidas de adsorÃÃo e desorÃÃo de gÃs N2 a Ãrea superficial especÃfica BET da Al-MCM-41 apresentou valor 1.303 m2 g-1, com um volume de poros de 1,23 cm3 g-1 e diÃmetro mÃdio de 2,45 nm. O teste do PZC determinou um pHPZC de 2,69. Os testes de adsorÃÃo do azul de metileno pelo adsorvente Al-MCM-41 mostraram que o mesmo apresenta alta capacidade de adsorÃÃo com valores em torno de 316 mg g-1.http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15944application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:29:11Zmail@mail.com -
dc.title.en.fl_str_mv Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
dc.title.alternative.pt.fl_str_mv SÃntese e caracterizaÃÃo de Al-MCM-41 a partir de caulim por rota hidrotÃrmica e avaliaÃÃo de desempenho na adsorÃÃo de azul de metileno.
title Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
spellingShingle Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
EvÃnia Carvalho dos Santos
Caulim
Metacaulim
Material mesoporoso
Al-MCM-41
AdsorÃÃo
Azul de metileno
Kaolin
Metakaolin
Mesoporous material
Al-MCM-41
Adsorption
Methylene blue
QUIMICA
title_short Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
title_full Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
title_fullStr Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
title_full_unstemmed Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
title_sort Synthesis and characterization of Al-MCM-41using kaolin as raw material by hydrothermal route and assessment of its performance in methylene blue adsorption
author EvÃnia Carvalho dos Santos
author_facet EvÃnia Carvalho dos Santos
author_role author
dc.contributor.advisor1.fl_str_mv Adonay Rodrigues Loiola
dc.contributor.advisor1ID.fl_str_mv 88127370304
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/9807982856173580
dc.contributor.referee1.fl_str_mv Cristiane Pinto Oliveira
dc.contributor.referee1ID.fl_str_mv 50612867315
dc.contributor.referee1Lattes.fl_str_mv CV: http://lattes.cnpq.br/6383586942968278
dc.contributor.referee2.fl_str_mv Francisco Wagner de Sousa
dc.contributor.referee2ID.fl_str_mv 61565067304
dc.contributor.authorID.fl_str_mv 68526113372
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/4203841579365038
dc.contributor.author.fl_str_mv EvÃnia Carvalho dos Santos
contributor_str_mv Adonay Rodrigues Loiola
Cristiane Pinto Oliveira
Francisco Wagner de Sousa
dc.subject.por.fl_str_mv Caulim
Metacaulim
Material mesoporoso
Al-MCM-41
AdsorÃÃo
Azul de metileno
topic Caulim
Metacaulim
Material mesoporoso
Al-MCM-41
AdsorÃÃo
Azul de metileno
Kaolin
Metakaolin
Mesoporous material
Al-MCM-41
Adsorption
Methylene blue
QUIMICA
dc.subject.eng.fl_str_mv Kaolin
Metakaolin
Mesoporous material
Al-MCM-41
Adsorption
Methylene blue
dc.subject.cnpq.fl_str_mv QUIMICA
dc.description.abstract.por.fl_txt_mv The mesoporous materials Al-MCM-41 produced from kaolin, low cost raw material, by means of hydrothermal acid treatment route, has shown potential for being used as adsorbent in removal process of methylene blue. The process of synthesis of Al-MCM-41 is based on calcination of kaolin, dealumination by acid treatment, hydrothermal synthesis and extraction of the surfactant. The characterization of de obtained mesoporous material was carried out by techniques such as: X-ray diffraction, vibrational spectroscopy in the infrared, 29Si and 27Al nuclear magnetic resonance in the solid state, scanning electron microscopy, transmission electron microscopy and N2 adsorption/desorption. The X-ray diffraction at low angles allowed the determination of the cell parameter, which was 4.02 nm. The analyses of scanning and transmission electron microscopy revealed important morphological properties of the synthesized material. N2 adsorption/desorption showed a BET specific surface area of 1,303 m2 g-1, pore volume of 1.23 cm3 g-1 and average diameter of 2.45 nm. PZC measurements showed a pHPZC of 2.69. The adsorption of methylene blue by Al-MCM-41 adsorbent showed high kinetic and high adsorption capacity, with values around 316 mg g-1.
O material mesoporoso Al-MCM-41 produzido a partir de caulim, matÃria-prima de baixo custo, por meio de rota hidrotÃrmica com tratamento Ãcido, mostrou-se promissor para ser usado como adsorvente do corante azul de metileno. O processo de sÃntese da Al-MCM-41 Ã baseado na calcinaÃÃo do caulim, desaluminizaÃÃo por tratamento Ãcido, sÃntese hidrotÃrmica e eliminaÃÃo do surfactante. A caracterizaÃÃo do material mesoporoso foi realizada por meio de tÃcnicas como: difraÃÃo de raios-X, espectroscopia vibracional na regiÃo do infravermelho, ressonÃncia magnÃtica nuclear no estado sÃlido de 29Si e 27Al, microscopia eletrÃnica de varredura, microscopia eletrÃnica de transmissÃo e adsorÃÃo de N2. A anÃlise de difraÃÃo de raios-X em baixo Ãngulo da Al-MCM-41 permitiu a determinaÃÃo do parÃmetro de cÃlula que apresentou valor de 4,02 nm. As anÃlises de microscopia eletrÃnica de varredura e de transmissÃo revelaram importantes propriedades morfolÃgicas do material sintetizado. Utilizando as medidas de adsorÃÃo e desorÃÃo de gÃs N2 a Ãrea superficial especÃfica BET da Al-MCM-41 apresentou valor 1.303 m2 g-1, com um volume de poros de 1,23 cm3 g-1 e diÃmetro mÃdio de 2,45 nm. O teste do PZC determinou um pHPZC de 2,69. Os testes de adsorÃÃo do azul de metileno pelo adsorvente Al-MCM-41 mostraram que o mesmo apresenta alta capacidade de adsorÃÃo com valores em torno de 316 mg g-1.
description The mesoporous materials Al-MCM-41 produced from kaolin, low cost raw material, by means of hydrothermal acid treatment route, has shown potential for being used as adsorbent in removal process of methylene blue. The process of synthesis of Al-MCM-41 is based on calcination of kaolin, dealumination by acid treatment, hydrothermal synthesis and extraction of the surfactant. The characterization of de obtained mesoporous material was carried out by techniques such as: X-ray diffraction, vibrational spectroscopy in the infrared, 29Si and 27Al nuclear magnetic resonance in the solid state, scanning electron microscopy, transmission electron microscopy and N2 adsorption/desorption. The X-ray diffraction at low angles allowed the determination of the cell parameter, which was 4.02 nm. The analyses of scanning and transmission electron microscopy revealed important morphological properties of the synthesized material. N2 adsorption/desorption showed a BET specific surface area of 1,303 m2 g-1, pore volume of 1.23 cm3 g-1 and average diameter of 2.45 nm. PZC measurements showed a pHPZC of 2.69. The adsorption of methylene blue by Al-MCM-41 adsorbent showed high kinetic and high adsorption capacity, with values around 316 mg g-1.
publishDate 2015
dc.date.issued.fl_str_mv 2015-10-14
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
status_str publishedVersion
format masterThesis
dc.identifier.uri.fl_str_mv http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15944
url http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15944
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.publisher.program.fl_str_mv Programa de PÃs-GraduaÃÃo em QuÃmica
dc.publisher.initials.fl_str_mv UFC
dc.publisher.country.fl_str_mv BR
publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFC
instname:Universidade Federal do Ceará
instacron:UFC
reponame_str Biblioteca Digital de Teses e Dissertações da UFC
collection Biblioteca Digital de Teses e Dissertações da UFC
instname_str Universidade Federal do Ceará
instacron_str UFC
institution UFC
repository.name.fl_str_mv -
repository.mail.fl_str_mv mail@mail.com
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