Versatile roles of metal species in carbon ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Versatile roles of metal species in carbon nanotube templates for the synthesis of metal-zeolite nanocomposite catalysts
Author(s) :
Flores, Camila [Auteur]
Zholobenko, Vladimir L. [Auteur]
Gu, Bang [Auteur]
Batalha, Nuno [Auteur]
Valtchev, Valentin [Auteur]
Baaziz, Walid [Auteur]
Ersen, Ovidiu [Auteur]
Marcilio, Nilson R. [Auteur]
Ordomsky, Vitaly [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Khodakov, Andrei [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Zholobenko, Vladimir L. [Auteur]
Gu, Bang [Auteur]
Batalha, Nuno [Auteur]
Valtchev, Valentin [Auteur]
Baaziz, Walid [Auteur]
Ersen, Ovidiu [Auteur]
Marcilio, Nilson R. [Auteur]
Ordomsky, Vitaly [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Khodakov, Andrei [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Journal title :
ACS Applied Nano Materials
Abbreviated title :
ACS Appl. Nano Mater.
Volume number :
2
Pages :
4507-4517
Publication date :
2019-07-01
ISSN :
2574-0970
Keyword(s) :
nanocomposite
hard template
replicas
catalyst
promotors
metal nanoparticles
acidity
hard template
replicas
catalyst
promotors
metal nanoparticles
acidity
HAL domain(s) :
Chimie/Catalyse
English abstract : [en]
Metal–zeolite nanocomposites are extensively used in heterogeneous catalysis. The small size of zeolite micropores and nonuniform distribution of the metal component within the zeolite structure can severely reduce the ...
Show more >Metal–zeolite nanocomposites are extensively used in heterogeneous catalysis. The small size of zeolite micropores and nonuniform distribution of the metal component within the zeolite structure can severely reduce the efficiency of these catalysts. In this work, we propose a new single-pot synthesis strategy for the design of metal–zeolite nanocomposites with specific shape, enhanced mesoporosity, and uniform distribution of highly dispersed metals such as cobalt, nickel, and magnesium within the zeolite crystals. The strategy involves using metal carbon nanotubes as a secondary hard template. The presence of metal species in carbon nanotube templates is crucial and indispensable for the synthesis of metal zeolite nanocomposites. The multiple roles of the metal carbon nanotubes in the zeolite synthesis are revealed. First, they serve as a replica to create zeolites with specific fibrous morphology. Second, they fulfill the role of a mesoporogen and markedly increase the zeolite secondary porosity. Finally, they act as a vehicle to uniformly introduce the metal functions inside the mesoporous zeolites. Nanocomposites prepared using metal carbon nanotubes have shown enhanced catalytic performance in Fischer–Tropsch synthesis, hydrogenation of aromatics, and anisole acylation.Show less >
Show more >Metal–zeolite nanocomposites are extensively used in heterogeneous catalysis. The small size of zeolite micropores and nonuniform distribution of the metal component within the zeolite structure can severely reduce the efficiency of these catalysts. In this work, we propose a new single-pot synthesis strategy for the design of metal–zeolite nanocomposites with specific shape, enhanced mesoporosity, and uniform distribution of highly dispersed metals such as cobalt, nickel, and magnesium within the zeolite crystals. The strategy involves using metal carbon nanotubes as a secondary hard template. The presence of metal species in carbon nanotube templates is crucial and indispensable for the synthesis of metal zeolite nanocomposites. The multiple roles of the metal carbon nanotubes in the zeolite synthesis are revealed. First, they serve as a replica to create zeolites with specific fibrous morphology. Second, they fulfill the role of a mesoporogen and markedly increase the zeolite secondary porosity. Finally, they act as a vehicle to uniformly introduce the metal functions inside the mesoporous zeolites. Nanocomposites prepared using metal carbon nanotubes have shown enhanced catalytic performance in Fischer–Tropsch synthesis, hydrogenation of aromatics, and anisole acylation.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)
Submission date :
2022-03-02T07:14:00Z
2024-01-16T09:23:43Z
2024-01-16T09:23:43Z
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