Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/36295
metadata.artigo.dc.title: Kinetics of the hydrodeoxygenation of cresol isomers over Ni2P/SiO2: proposals of nature of deoxygenation active sites based on an experimental study
metadata.artigo.dc.creator: Gonçalves, Vinicius O. O.
Souza, Priscilla M. de
Silva, Victor Teixeira da
Noronha, Fabio B.
Richard, Frédéric
metadata.artigo.dc.subject: O-cresol
M-cresol
P-cresol
HDO
Nickel phosphide catalysts
Ni2P
Kinetics
Orto-cresol
Meta-cresol
Para-cresol
Hydrodeoxygenation (HDO)
metadata.artigo.dc.publisher: Elsevier
metadata.artigo.dc.date.issued: 15-May-2017
metadata.artigo.dc.identifier.citation: GONÇALVES, V. O. O. et al. Kinetics of the hydrodeoxygenation of cresol isomers over Ni2P/SiO2: proposals of nature of deoxygenation active sites based on an experimental study. Applied Catalysis. B: Environmental, [S.l.], v. 205, p. 357-367, May 2017. DOI: 10.1016/j.apcatb.2016.12.051.
metadata.artigo.dc.description.abstract: The hydrodeoxygenation of cresols (m-cresol, p-cresol and o-cresol) over Ni2P/SiO2 was carried out between 250 and 340 °C under high hydrogen pressure (between 1.6 and 3.2 MPa). XRD demonstrated that the desired Ni2P phase was obtained at 450 °C using 4 MPa of H2. The catalytic behavior of Ni2P/SiO2 for the transformation of cresols indicated that these compounds were deoxygenated by two different pathways, which involved different reactions such as hydrogenolysis, hydrogenation, dehydration and isomerization. Using these experimental conditions, i.e. under hydrogen pressure, the catalyst used exhibited a remarkable stability, at least during 20 h. An effect of the position of the methyl group in cresol isomers was highlighted, m-cresol being the most reactive whereas o-cresol the less reactive. In addition, an increase of temperature and hydrogen pressure allowed to ensure a high deoxygenation degree of phenolic reactants even at low level of conversion (less than 20%). The participation of different active sites and adsorption modes were proposed to explain the different products observed and their distribution.
metadata.artigo.dc.identifier.uri: https://www.sciencedirect.com/science/article/pii/S0926337316309870
http://repositorio.ufla.br/jspui/handle/1/36295
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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