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Master's Dissertation
DOI
https://doi.org/10.11606/D.54.1993.tde-22112013-111448
Document
Author
Full name
Nilson Camargo Mello
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1993
Supervisor
Committee
Bonagamba, Tito Jose (President)
Cardoso, Dilson
Magon, Claudio Jose
Title in Portuguese
Caracterização de zeolitas utilizando espectroscopia de alta resolução em sólidos por ressonância magnética nuclear
Keywords in Portuguese
Espectroscopia de alta resolução em sólidos
Ressonância magnética nuclear
Zeolitas
Abstract in Portuguese
O objetivo deste trabalho consistiu na caracterização das zeólitas Y e ZSM-5, usando a técnica de Espectroscopia de Alta resolução em sólidos por Ressonância Magnética Nuclear (RMN). Os espectros de alta resolução do 13C e 27Al foram obtidos usando, simultaneamente, as técnicas de desacoplamento em alta potência (DEC) e rotação da amostra em torno de ângulo mágico (MAS). Utilizamos os espectros de alta resolução dos núcleos de 27Al para analisarmos a coordenação e a quantificação dos alumínios estruturais e extra-estruturais em zeólitas Y e de 13C para analisarmos o posicionamento de moléculas direcionadas localizadas nos canais da ZSM-5
Title in English
Characterization of zeolites using high-resolution solid-state nuclear magnetic resonance spectroscopy
Keywords in English
High-resolution spectroscopy
Nuclear magnetic resonance
Solid-state spectroscopy
Zeolites
Abstract in English
The objective of this work consisted of the characterization of zeolites Y and ZSM-5, using Solid State High Resolution Nuclear Magnetic Resonance Spectrsocopy. The 13C and 27Al high resolution spectra were obtained using simultaneously, High Power Decoupling (DEC) and Magic Angle Spinning (MAS). The high resolution 27Al spectra were used to distinguish and quantify framework and non-framework aluminium in zeolites Y. The high resolution 13C spectra were used to probe the position and configuration of the guest organic molecules within the framework of the ZSM-5 zeolite
 
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Publishing Date
2013-11-25
 
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