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Effects of crystal size, acidity, and synthesis procedure on the catalytic performance of gallium and aluminum MFI zeolites in glycerol dehydration
(2016-10-01)
The influence on gas-phase catalytic glycerol dehydration of crystal size (S: small, or L: large crystals), acidity, and synthesis procedure for isomorphous incorporation of gallium (Ga-S; Ga-L) or aluminum (Al-S; Al-L) ...
The multiple benefits of glycerol conversion to acrolein and acrylic acid catalyzed by vanadium oxides supported on micro-mesoporous MFI zeolites
(2017-01-01)
The ZSM-5 zeolite (MFI structure, Si/Al = 40) was treated using NaOH and either oxalic acid or HCl to obtain hierarchical materials with different characteristics, followed by impregnation with vanadium oxides (V2O5) to ...
Preparation of hydrophobic MFI zeolites containing hierarchical micro-mesopores using seeds functionalized with octyltriethoxysilane
(2020-01-20)
In this work, we report the synthesis of hydrophobic MFI zeolites presenting a mesopore size distribution and high specific external area (∼288 m2 g−1), employing surface functionalization with octyltriethoxysilane (OTEOS). ...
Síntese e avaliação catalítica das zeólitas com estrutura BEA, MFI e MTW na reação de Knoevenagel
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2014-08-22)
The use of zeolites in basic catalysis is small, especially when compared to the numerous applications of material in their acid form. Inside this context, are even smaller the number of studies on the use of as-synthesized ...
Síntese de materiais Micro/Mesoporosos hierárquicos com estrutura MFI
(Universidade Estadual Paulista (Unesp), 2018-02-23)
Este trabalho descreve o estudo de uma nova metodologia de síntese para obtenção de zeólitas MFI contendo uma estrutura hierárquica de poros. A porosidade hierárquica é uma propriedade que aumenta a acessibilidade dos ...
Fast microwave synthesis of Pt-MFI zeolite coatings on silicon micromonoliths: Application to VOC catalytic combustion
(De Gruyter, 2012-04)
This paper describes the preparation of a ZSM-5 zeolite layer onto conventional Si wafers and Si micromonoliths, by using microwave-assisted seeded hydrothermal synthesis. A homogeneous ZSM-5 zeolite layer up to 680 nm was ...
Kaolin as a Feedstock for a Versatile Synthesis of Composite MFI/MCM-41 with Enhanced Catalytic Properties
(Facultad Experimental de Ciencias de la Universidad del Zulia, 2015)
Incorporation of Brazilian Diatomite in the Synthesis of An MFI Zeolite
(Molecular Diversity Preservation International, 2019-05-23)
The need for greener procedures is a fact to reduce residues, to decrease industrial costs, and to accomplish the environmental agreements. In an attempt to address this question, we propose the addition of a natural ...