New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials

J. González; J. A. Wang; L. F. Chen; R. Limas; R. Manzo; J. T. Vázquez Rodríguez; O. A. González Vargas

doi:10.1016/j.matlet.2018.02.111

New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials

J. González, J. A. Wang, L. F. Chen, R. Limas, R. Manzo, J. T. Vázquez Rodríguez, O. A. González Vargas

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

11 Citas (Scopus)

Resumen

Structural defects in both MCM–41 (Mobil Composition of Matter No. 41) framework and V₂O₅ nanocrystals and surface acid sites of the V₂O₅/MCM–41 hybrid nanomaterials were quantitatively determined. Oxygen defects were found to be related to Lewis acid sites in the materials. In the oxidative desulfurization of a model diesel, dibenzothiophene conversion was almost proportional to the number of Lewis acidity and generally correlated with the oxygen defects concentration in V₂O₅. This work confirmed that increasing surface Lewis acidity and oxygen defect concentration is an effective route to improve the catalytic activity in the oxidation of sulfur compounds.

Idioma original	Inglés
Páginas (desde-hasta)	70-73
Número de páginas	4
Publicación	Materials Letters
Volumen	220
DOI	https://doi.org/10.1016/j.matlet.2018.02.111
Estado	Publicada - 1 jun. 2018

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title = "New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials",

abstract = "Structural defects in both MCM–41 (Mobil Composition of Matter No. 41) framework and V2O5 nanocrystals and surface acid sites of the V2O5/MCM–41 hybrid nanomaterials were quantitatively determined. Oxygen defects were found to be related to Lewis acid sites in the materials. In the oxidative desulfurization of a model diesel, dibenzothiophene conversion was almost proportional to the number of Lewis acidity and generally correlated with the oxygen defects concentration in V2O5. This work confirmed that increasing surface Lewis acidity and oxygen defect concentration is an effective route to improve the catalytic activity in the oxidation of sulfur compounds.",

keywords = "Dibenzothiophene, Hybrid nanomaterials, Lewis acidity, Rietveld refinement, Structural defects",

author = "J. Gonz{\'a}lez and Wang, {J. A.} and Chen, {L. F.} and R. Limas and R. Manzo and {V{\'a}zquez Rodr{\'i}guez}, {J. T.} and {Gonz{\'a}lez Vargas}, {O. A.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jun,

day = "1",

doi = "10.1016/j.matlet.2018.02.111",

language = "Ingl{\'e}s",

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TY - JOUR

T1 - New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials

AU - González, J.

AU - Wang, J. A.

AU - Chen, L. F.

AU - Limas, R.

AU - Manzo, R.

AU - Vázquez Rodríguez, J. T.

AU - González Vargas, O. A.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Structural defects in both MCM–41 (Mobil Composition of Matter No. 41) framework and V2O5 nanocrystals and surface acid sites of the V2O5/MCM–41 hybrid nanomaterials were quantitatively determined. Oxygen defects were found to be related to Lewis acid sites in the materials. In the oxidative desulfurization of a model diesel, dibenzothiophene conversion was almost proportional to the number of Lewis acidity and generally correlated with the oxygen defects concentration in V2O5. This work confirmed that increasing surface Lewis acidity and oxygen defect concentration is an effective route to improve the catalytic activity in the oxidation of sulfur compounds.

AB - Structural defects in both MCM–41 (Mobil Composition of Matter No. 41) framework and V2O5 nanocrystals and surface acid sites of the V2O5/MCM–41 hybrid nanomaterials were quantitatively determined. Oxygen defects were found to be related to Lewis acid sites in the materials. In the oxidative desulfurization of a model diesel, dibenzothiophene conversion was almost proportional to the number of Lewis acidity and generally correlated with the oxygen defects concentration in V2O5. This work confirmed that increasing surface Lewis acidity and oxygen defect concentration is an effective route to improve the catalytic activity in the oxidation of sulfur compounds.

KW - Dibenzothiophene

KW - Hybrid nanomaterials

KW - Lewis acidity

KW - Rietveld refinement

KW - Structural defects

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U2 - 10.1016/j.matlet.2018.02.111

DO - 10.1016/j.matlet.2018.02.111

M3 - Artículo

SN - 0167-577X

VL - 220

SP - 70

EP - 73

JO - Materials Letters

JF - Materials Letters

ER -

New insights into oxygen defects, Lewis acidity and catalytic activity of vanadia hybrid nanomaterials

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