Imidazolium-based silica microreactors for the efficient conversion of carbon dioxide

Mireia Buaki-Sogo, Hermenegildo Garcia, Carmela Aprile

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Imidazolium-based silica microreactors were synthesized by a one-pot procedure. A straightforward synthesis approach was achieved through self-organization/polymerization of the amphipathic organic salts that behave as templates for the construction of silica architecture and as catalytic active sites. The porous silica shell allowed the diffusion of reactants and products to/from the active sites and conferred stability to the polymeric matrix. The solid was extensively characterised by transmission and scanning electron microscopy, N<inf>2</inf> adsorption/desorption, X-ray diffraction, <sup>29</sup>Si solid-state MAS-NMR and combustion chemical analysis. The material was tested as a catalyst for the reaction of carbon dioxide with various epoxides to produce cyclic carbonates. The organic-inorganic hybrid microreactors displayed excellent performance in terms of both yield and selectivity. Moreover, it can be used in multiple catalytic cycles.

langue originaleAnglais
Pages (de - à)1222-1230
Nombre de pages9
journalCatalysis Science and Technology
Volume5
Numéro de publication2
Les DOIs
étatPublié - 1 févr. 2015

Empreinte digitale

Carbon Dioxide
Silicon Dioxide
Carbon dioxide
Silica
Carbonates
Epoxy Compounds
Desorption
Salts
Polymerization
Nuclear magnetic resonance
Transmission electron microscopy
Adsorption
X ray diffraction
Scanning electron microscopy
Catalysts
Chemical analysis

Citer ceci

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abstract = "Imidazolium-based silica microreactors were synthesized by a one-pot procedure. A straightforward synthesis approach was achieved through self-organization/polymerization of the amphipathic organic salts that behave as templates for the construction of silica architecture and as catalytic active sites. The porous silica shell allowed the diffusion of reactants and products to/from the active sites and conferred stability to the polymeric matrix. The solid was extensively characterised by transmission and scanning electron microscopy, N2 adsorption/desorption, X-ray diffraction, 29Si solid-state MAS-NMR and combustion chemical analysis. The material was tested as a catalyst for the reaction of carbon dioxide with various epoxides to produce cyclic carbonates. The organic-inorganic hybrid microreactors displayed excellent performance in terms of both yield and selectivity. Moreover, it can be used in multiple catalytic cycles.",
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Imidazolium-based silica microreactors for the efficient conversion of carbon dioxide. / Buaki-Sogo, Mireia; Garcia, Hermenegildo; Aprile, Carmela.

Dans: Catalysis Science and Technology, Vol 5, Numéro 2, 01.02.2015, p. 1222-1230.

Résultats de recherche: Contribution à un journal/une revueArticle

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