High surface area zincosilicates as efficient catalysts for the synthesis of ethyl lactate: an in-depth structural investigation

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Novel Zn-MCM-41 mesoporous materials with particle diameters ranging from 20 to 120 nm were successfully prepared following a straightforward synthesis route. The structural and textural properties of the solids were characterized by N2-physisorption, X-ray diffraction, 29Si MAS-NMR, TEM and EDX. These results allow evidencing the presence of an ordered mesoporous structure with a very high specific surface area. The insertion of zinc as single site species within the silica framework was investigated using XPS via the Auger parameter in a Wagner plot representation. This is the first time that an in-depth investigation of these types of solids using XPS techniques was performed. The presence of Brønsted and Lewis acidity was elucidated by following in the IR the interaction with ammonia and carbon monoxide. The materials were tested for the conversion of dihydroxyacetone into ethyl lactate with good results both in terms of yield and selectivity and the catalytic activity resulted in excellent agreement with IR and XPS analysis.

langue originaleAnglais
Pages (de - à)26756-26765
Nombre de pages10
journalPhysical Chemistry Chemical Physics
Volume17
Numéro de publication40
Les DOIs
étatPublié - 2015

Empreinte digitale

lactates
X ray photoelectron spectroscopy
catalysts
Catalysts
synthesis
Dihydroxyacetone
acidity
carbon monoxide
catalytic activity
ammonia
insertion
Mesoporous materials
Physisorption
Catalyst selectivity
zinc
plots
selectivity
routes
Carbon Monoxide
silicon dioxide

Citer ceci

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title = "High surface area zincosilicates as efficient catalysts for the synthesis of ethyl lactate: an in-depth structural investigation",
abstract = "Novel Zn-MCM-41 mesoporous materials with particle diameters ranging from 20 to 120 nm were successfully prepared following a straightforward synthesis route. The structural and textural properties of the solids were characterized by N2-physisorption, X-ray diffraction, 29Si MAS-NMR, TEM and EDX. These results allow evidencing the presence of an ordered mesoporous structure with a very high specific surface area. The insertion of zinc as single site species within the silica framework was investigated using XPS via the Auger parameter in a Wagner plot representation. This is the first time that an in-depth investigation of these types of solids using XPS techniques was performed. The presence of Br{\o}nsted and Lewis acidity was elucidated by following in the IR the interaction with ammonia and carbon monoxide. The materials were tested for the conversion of dihydroxyacetone into ethyl lactate with good results both in terms of yield and selectivity and the catalytic activity resulted in excellent agreement with IR and XPS analysis.",
author = "Xavier Collard and Pierre Louette and Sonia Fiorilli and Carmela Aprile",
year = "2015",
doi = "10.1039/c5cp03577e",
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High surface area zincosilicates as efficient catalysts for the synthesis of ethyl lactate: an in-depth structural investigation. / Collard, Xavier; Louette, Pierre; Fiorilli, Sonia; Aprile, Carmela.

Dans: Physical Chemistry Chemical Physics, Vol 17, Numéro 40, 2015, p. 26756-26765.

Résultats de recherche: Contribution à un journal/une revueArticle

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AU - Collard, Xavier

AU - Louette, Pierre

AU - Fiorilli, Sonia

AU - Aprile, Carmela

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AB - Novel Zn-MCM-41 mesoporous materials with particle diameters ranging from 20 to 120 nm were successfully prepared following a straightforward synthesis route. The structural and textural properties of the solids were characterized by N2-physisorption, X-ray diffraction, 29Si MAS-NMR, TEM and EDX. These results allow evidencing the presence of an ordered mesoporous structure with a very high specific surface area. The insertion of zinc as single site species within the silica framework was investigated using XPS via the Auger parameter in a Wagner plot representation. This is the first time that an in-depth investigation of these types of solids using XPS techniques was performed. The presence of Brønsted and Lewis acidity was elucidated by following in the IR the interaction with ammonia and carbon monoxide. The materials were tested for the conversion of dihydroxyacetone into ethyl lactate with good results both in terms of yield and selectivity and the catalytic activity resulted in excellent agreement with IR and XPS analysis.

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