Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve

Thermogravimetry analysis was used to study the thermal decomposition of Ti-MCM-41 to determine the best calcination conditions. Ti-MCM-41 molecular sieve was synthesized using a hydrothermal route in which Ti ions were incorporated into the pore channels of MCM-41 starting from a hydrogel method...

ver descrição completa

Na minha lista:
Detalhes bibliográficos
Principais autores: Melo, Marcus Antonio de Freitas, Fontes, Maria do Socorro Braga, Melo, Dulce Maria de Araújo, Barros, Joana Maria de Farias, Braga, Renata Martins, Fontes, Vilsinéia dos Anjos
Formato: article
Idioma:English
Publicado em: Journal of Thermal Analysis and Calorimetry
Assuntos:
Ti-MCM-41
Molecular sieve
Hydrothermal synthesis
Kinetics
Endereço do item:https://repositorio.ufrn.br/handle/123456789/45411
Tags: Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
id ri-123456789-45411
record_format dspace
spelling ri-123456789-454112021-12-16T17:22:05Z Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve Melo, Marcus Antonio de Freitas Fontes, Maria do Socorro Braga Melo, Dulce Maria de Araújo Barros, Joana Maria de Farias Braga, Renata Martins Fontes, Vilsinéia dos Anjos Ti-MCM-41 Molecular sieve Hydrothermal synthesis Kinetics Thermogravimetry analysis was used to study the thermal decomposition of Ti-MCM-41 to determine the best calcination conditions. Ti-MCM-41 molecular sieve was synthesized using a hydrothermal route in which Ti ions were incorporated into the pore channels of MCM-41 starting from a hydrogel method according to the following molar composition: 1.00 CTMABr:4.00 SiO2:X TiO2:1.00 Na2O:200.00 H2O. Physicochemical properties of samples were investigated using XRD, FTIR, and N2 adsorption– desorption to confirm the incorporation of TiO2 nanoparticles inside of MCM-41 mesoporous without destroying its structure. The high temperatures facilitate the rapid removal of the surfactant; however, it caused destruction of the MCM-41 structure by breaking the bonds of the silica tetrahedral structure. The procedures to obtain the apparent activation energies of CTMABr decomposition were based on the kinetic model proposed by Flynn-Wall using thermal analysis of data performed with heating rates 5, 10, and 20 C min-1 2021-12-16T17:22:04Z 2021-12-16T17:22:04Z 2014 article FONTES, Maria do Socorro Braga; MELO, Dulce Maria de Araújo; BARROS, Joana Maria de Farias; BRAGA, Renata Martins; MELO, Marcus Antonio de Freitas; FONTES, Vilsinéia dos Anjos. Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve. Journal of Thermal Analysis and Calorimetry, v. 119, p. 197-204, 2014. Disponível em: https://link.springer.com/article/10.1007%2Fs10973-014-4099-2. Acesso em: 01 set 2021. 1572-8943 https://repositorio.ufrn.br/handle/123456789/45411 10.1007/s10973-014-4099-2 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Journal of Thermal Analysis and Calorimetry
institution Repositório Institucional
collection RI - UFRN
language English
topic Ti-MCM-41
Molecular sieve
Hydrothermal synthesis
Kinetics
spellingShingle Ti-MCM-41
Molecular sieve
Hydrothermal synthesis
Kinetics
Melo, Marcus Antonio de Freitas
Fontes, Maria do Socorro Braga
Melo, Dulce Maria de Araújo
Barros, Joana Maria de Farias
Braga, Renata Martins
Fontes, Vilsinéia dos Anjos
Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
description Thermogravimetry analysis was used to study the thermal decomposition of Ti-MCM-41 to determine the best calcination conditions. Ti-MCM-41 molecular sieve was synthesized using a hydrothermal route in which Ti ions were incorporated into the pore channels of MCM-41 starting from a hydrogel method according to the following molar composition: 1.00 CTMABr:4.00 SiO2:X TiO2:1.00 Na2O:200.00 H2O. Physicochemical properties of samples were investigated using XRD, FTIR, and N2 adsorption– desorption to confirm the incorporation of TiO2 nanoparticles inside of MCM-41 mesoporous without destroying its structure. The high temperatures facilitate the rapid removal of the surfactant; however, it caused destruction of the MCM-41 structure by breaking the bonds of the silica tetrahedral structure. The procedures to obtain the apparent activation energies of CTMABr decomposition were based on the kinetic model proposed by Flynn-Wall using thermal analysis of data performed with heating rates 5, 10, and 20 C min-1
format article
author Melo, Marcus Antonio de Freitas
Fontes, Maria do Socorro Braga
Melo, Dulce Maria de Araújo
Barros, Joana Maria de Farias
Braga, Renata Martins
Fontes, Vilsinéia dos Anjos
author_facet Melo, Marcus Antonio de Freitas
Fontes, Maria do Socorro Braga
Melo, Dulce Maria de Araújo
Barros, Joana Maria de Farias
Braga, Renata Martins
Fontes, Vilsinéia dos Anjos
author_sort Melo, Marcus Antonio de Freitas
title Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
title_short Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
title_full Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
title_fullStr Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
title_full_unstemmed Kinetic study of CTMA+ removal from the pores of the Ti-MCM-41 molecular sieve
title_sort kinetic study of ctma+ removal from the pores of the ti-mcm-41 molecular sieve
publisher Journal of Thermal Analysis and Calorimetry
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/45411
work_keys_str_mv AT melomarcusantoniodefreitas kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
AT fontesmariadosocorrobraga kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
AT melodulcemariadearaujo kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
AT barrosjoanamariadefarias kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
AT bragarenatamartins kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
AT fontesvilsineiadosanjos kineticstudyofctmaremovalfromtheporesofthetimcm41molecularsieve
_version_ 1773965893370380288

Registros relacionados