Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts

K. Leiva, C. Sepúlveda, R. García, J. L.G. Fierro, G. Aguila, P. Baeza, M. Villarroel, N. Escalona

Resultado de la investigación: Article

12 Citas (Scopus)

Resumen

The effect of phosphorus content on Mo/γ-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol (guaiacol) was studied. The catalysts were prepared by successive impregnation of P (0.5, 1.0, 2.0. 3.0 and 5.0 wt.%) and then Mo (15 wt.%) precursors in excess solvent. The activities of the catalysts were evaluated in the hydrodeoxygenation (HDO) of guaiacol, carried out at 573 K and 5 MPa. The catalysts were characterized by BET surface area, UV-vis-DRS, electrophoretic migration (EM), X-ray Photoelectron Spectroscopy (XPS) and surface acidity techniques. The conversion of guaiacol increased with increase in P content up to 1.0 wt%, and then subsequently decreased at higher loadings. The increase in activity was attributed to the formation of two-dimensional MoS2, while the subsequent decrease was ascribed to loss of active sites resulting from the formation of three-dimensional MoS2. The differences in surface Mo species present on the catalyst were related to the amount of P contents. On the other hand, differences in selectivity, expressed in terms of the phenol/catechol ratio, were mainly influenced by the acid strength of the catalysts.

Idioma originalEnglish
Páginas (desde-hasta)568-574
Número de páginas7
PublicaciónApplied Catalysis A: General
Volumen467
DOI
EstadoPublished - 1 ene 2013
Publicado de forma externa

Huella dactilar

Guaiacol
Catalysts
Sulfides
Phenol
Acidity
Impregnation
Phosphorus
Phenols
X ray photoelectron spectroscopy
Acids

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Citar esto

Leiva, K., Sepúlveda, C., García, R., Fierro, J. L. G., Aguila, G., Baeza, P., ... Escalona, N. (2013). Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts. Applied Catalysis A: General, 467, 568-574. https://doi.org/10.1016/j.apcata.2013.08.012
Leiva, K. ; Sepúlveda, C. ; García, R. ; Fierro, J. L.G. ; Aguila, G. ; Baeza, P. ; Villarroel, M. ; Escalona, N. / Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts. En: Applied Catalysis A: General. 2013 ; Vol. 467. pp. 568-574.
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abstract = "The effect of phosphorus content on Mo/γ-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol (guaiacol) was studied. The catalysts were prepared by successive impregnation of P (0.5, 1.0, 2.0. 3.0 and 5.0 wt.{\%}) and then Mo (15 wt.{\%}) precursors in excess solvent. The activities of the catalysts were evaluated in the hydrodeoxygenation (HDO) of guaiacol, carried out at 573 K and 5 MPa. The catalysts were characterized by BET surface area, UV-vis-DRS, electrophoretic migration (EM), X-ray Photoelectron Spectroscopy (XPS) and surface acidity techniques. The conversion of guaiacol increased with increase in P content up to 1.0 wt{\%}, and then subsequently decreased at higher loadings. The increase in activity was attributed to the formation of two-dimensional MoS2, while the subsequent decrease was ascribed to loss of active sites resulting from the formation of three-dimensional MoS2. The differences in surface Mo species present on the catalyst were related to the amount of P contents. On the other hand, differences in selectivity, expressed in terms of the phenol/catechol ratio, were mainly influenced by the acid strength of the catalysts.",
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Leiva, K, Sepúlveda, C, García, R, Fierro, JLG, Aguila, G, Baeza, P, Villarroel, M & Escalona, N 2013, 'Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts', Applied Catalysis A: General, vol. 467, pp. 568-574. https://doi.org/10.1016/j.apcata.2013.08.012

Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts. / Leiva, K.; Sepúlveda, C.; García, R.; Fierro, J. L.G.; Aguila, G.; Baeza, P.; Villarroel, M.; Escalona, N.

En: Applied Catalysis A: General, Vol. 467, 01.01.2013, p. 568-574.

Resultado de la investigación: Article

TY - JOUR

T1 - Effect of P content in the conversion of guaiacol over Mo/γ-Al 2O3 catalysts

AU - Leiva, K.

AU - Sepúlveda, C.

AU - García, R.

AU - Fierro, J. L.G.

AU - Aguila, G.

AU - Baeza, P.

AU - Villarroel, M.

AU - Escalona, N.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The effect of phosphorus content on Mo/γ-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol (guaiacol) was studied. The catalysts were prepared by successive impregnation of P (0.5, 1.0, 2.0. 3.0 and 5.0 wt.%) and then Mo (15 wt.%) precursors in excess solvent. The activities of the catalysts were evaluated in the hydrodeoxygenation (HDO) of guaiacol, carried out at 573 K and 5 MPa. The catalysts were characterized by BET surface area, UV-vis-DRS, electrophoretic migration (EM), X-ray Photoelectron Spectroscopy (XPS) and surface acidity techniques. The conversion of guaiacol increased with increase in P content up to 1.0 wt%, and then subsequently decreased at higher loadings. The increase in activity was attributed to the formation of two-dimensional MoS2, while the subsequent decrease was ascribed to loss of active sites resulting from the formation of three-dimensional MoS2. The differences in surface Mo species present on the catalyst were related to the amount of P contents. On the other hand, differences in selectivity, expressed in terms of the phenol/catechol ratio, were mainly influenced by the acid strength of the catalysts.

AB - The effect of phosphorus content on Mo/γ-Al2O3 sulfide catalysts for the conversion of 2-methoxyphenol (guaiacol) was studied. The catalysts were prepared by successive impregnation of P (0.5, 1.0, 2.0. 3.0 and 5.0 wt.%) and then Mo (15 wt.%) precursors in excess solvent. The activities of the catalysts were evaluated in the hydrodeoxygenation (HDO) of guaiacol, carried out at 573 K and 5 MPa. The catalysts were characterized by BET surface area, UV-vis-DRS, electrophoretic migration (EM), X-ray Photoelectron Spectroscopy (XPS) and surface acidity techniques. The conversion of guaiacol increased with increase in P content up to 1.0 wt%, and then subsequently decreased at higher loadings. The increase in activity was attributed to the formation of two-dimensional MoS2, while the subsequent decrease was ascribed to loss of active sites resulting from the formation of three-dimensional MoS2. The differences in surface Mo species present on the catalyst were related to the amount of P contents. On the other hand, differences in selectivity, expressed in terms of the phenol/catechol ratio, were mainly influenced by the acid strength of the catalysts.

KW - 2-Methoxyphenol

KW - Hydrodeoxygenation

KW - Phosphorus

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U2 - 10.1016/j.apcata.2013.08.012

DO - 10.1016/j.apcata.2013.08.012

M3 - Article

AN - SCOPUS:85019830450

VL - 467

SP - 568

EP - 574

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

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