Properties and activity of zn-ta-tud-1 in the lebedev process

Pomalaza Raez, Guillaume; Simon, Pardis; Addad, Ahmed; Capron, Mickael; Dumeignil, Franck

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1039/d0gc00103a

URL permanente :

http://hdl.handle.net/20.500.12210/60582

Titre :

Properties and activity of zn-ta-tud-1 in the lebedev process

Auteur(s) :

Pomalaza Raez, Guillaume [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Simon, Pardis [Auteur]

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

Unité Matériaux et Transformations (UMET) - UMR 8207
Capron, Mickael [Auteur]

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

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Titre de la revue :

Green chemistry . an international journal and green chemistry resource . GC

Nom court de la revue :

Green Chem.

Numéro :

Pagination :

2558-2574

Date de publication :

2020-04-21

ISSN :

1463-9262

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

A zinc and tantalum-containing mesoporous silica catalyst highly active and selective in the Lebedev process has been prepared using the one-pot TUD-1 methodology. Selectivity towards butadiene reached 60–70%, making ...
Lire la suite >A zinc and tantalum-containing mesoporous silica catalyst highly active and selective in the Lebedev process has been prepared using the one-pot TUD-1 methodology. Selectivity towards butadiene reached 60–70%, making Zn–Ta-TUD-1 one of the best performing catalysts in the literature. To rationalize these results and establish a structure–activity relationship, a series of similar catalysts was prepared and characterized. Nitrogen physisorption, XPS, ICP-AES, XRD, TEM, UV-vis spectroscopy, TGA NH3-TPD, H2-TPR and FT-IR techniques were used. The most active samples were found to possess a large specific surface area and highly dispersed metal oxide phase incorporated within the mesoporous silica matrix. In combination with catalytic testing, characterization also showed a direct correlation between the number of Lewis acid sites and butadiene yield, confirming the structure–activity relationship theory prevalent for the Lebedev process. Deactivation of Zn–Ta-TUD-1 was also studied using the same techniques to characterize the properties of spent catalysts. It was found that the accumulation of heavy carbonaceous species caused a reduction of specific surface area and pore size coinciding with the observed loss in activity. Nevertheless, the pores of TUD-1 were large enough to avoid total pore blockage and a high selectivity could be maintained for 72 hours.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Centrale Lille
ENSCL
INRA
Univ. Artois
Université de Lille

Collections :

Équipe(s) de recherche :

Valorisation des alcanes et de la biomasse (VAALBIO)

Date de dépôt :

2022-03-02T07:13:20Z
2023-10-20T07:39:22Z

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d0gc00103a.pdf
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Ce document est diffusé sous licence Attribution-NonCommercial 3.0 United States

Numéro de version	Lien	Date de modification
2	20.500.12210/60582*	2023-10-20T07:31:34Z
1	20.500.12210/60582.1	2022-03-02T07:13:20Z

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