Effect of phenol addition on the performances of H-Y zeolite during methylcyclohexane transformation

I. Graça; J. D. Comparot; S. Laforge; P. Magnoux; J. M. Lopes; M. F. Ribeiro; F. Ramôa Ribeiro

doi:10.1016/j.apcata.2008.10.032

Effect of phenol addition on the performances of H-Y zeolite during methylcyclohexane transformation

I. Graça, J. D. Comparot, S. Laforge^*, P. Magnoux, J. M. Lopes, M. F. Ribeiro, F. Ramôa Ribeiro

^*Corresponding author for this work

Engineering

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

The transformation of a mixture of methylcyclohexane and a small amount of phenol, as representative of the transformation of a mixture of biomass-derived oxygenates and Fluid Catalytic Cracking (FCC) feedstock was studied at 350 and 450 °C over a USHY zeolite. At 350 °C, the addition of phenol increases the deactivation of the zeolite catalyst, which is due to phenol adsorption on both Brönsted and Lewis acid sites, in addition to the formation of coke from methylcyclohexane. Whatever the contact time and the phenol amount, this deactivation is always partial, which suggests that a substantial portion of the active sites of the HY zeolite is not affected by deactivation. Finally, the increase of the reaction temperature (to 450 °C) allows limiting the effect of phenol addition on the zeolite activity and stability.

Original language	English
Pages (from-to)	123-129
Number of pages	7
Journal	Applied Catalysis A: General
Volume	353
Issue number	1
Early online date	31 Oct 2008
DOIs	https://doi.org/10.1016/j.apcata.2008.10.032
Publication status	Published - 31 Jan 2009

Bibliographical note

Acknowledgements: . Grac ̧a would like to express her gratitude to the Fundac ̧a ̃o para
a Cieˆncia e Tecnologia (FCT) for her Ph.D. grant (ref. SFRH/BD/
37270/2007).

Keywords

Bio-oils
Catalytic cracking
Coking
Deactivation
Methylcyclohexane
Phenol
Zeolites

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10.1016/j.apcata.2008.10.032

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title = "Effect of phenol addition on the performances of H-Y zeolite during methylcyclohexane transformation",

abstract = "The transformation of a mixture of methylcyclohexane and a small amount of phenol, as representative of the transformation of a mixture of biomass-derived oxygenates and Fluid Catalytic Cracking (FCC) feedstock was studied at 350 and 450 °C over a USHY zeolite. At 350 °C, the addition of phenol increases the deactivation of the zeolite catalyst, which is due to phenol adsorption on both Br{\"o}nsted and Lewis acid sites, in addition to the formation of coke from methylcyclohexane. Whatever the contact time and the phenol amount, this deactivation is always partial, which suggests that a substantial portion of the active sites of the HY zeolite is not affected by deactivation. Finally, the increase of the reaction temperature (to 450 °C) allows limiting the effect of phenol addition on the zeolite activity and stability.",

keywords = "Bio-oils, Catalytic cracking, Coking, Deactivation, Methylcyclohexane, Phenol, Zeolites",

author = "I. Gra{\c c}a and Comparot, {J. D.} and S. Laforge and P. Magnoux and Lopes, {J. M.} and Ribeiro, {M. F.} and Ribeiro, {F. Ram{\^o}a}",

note = "Acknowledgements: . Grac{\c }a would like to express her gratitude to the Fundac{\c }a{\~ }o para a Cieˆncia e Tecnologia (FCT) for her Ph.D. grant (ref. SFRH/BD/ 37270/2007).",

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AU - Graça, I.

AU - Comparot, J. D.

AU - Laforge, S.

AU - Magnoux, P.

AU - Lopes, J. M.

AU - Ribeiro, M. F.

AU - Ribeiro, F. Ramôa

N1 - Acknowledgements: . Grac ̧a would like to express her gratitude to the Fundac ̧a ̃o para a Cieˆncia e Tecnologia (FCT) for her Ph.D. grant (ref. SFRH/BD/ 37270/2007).

PY - 2009/1/31

Y1 - 2009/1/31

N2 - The transformation of a mixture of methylcyclohexane and a small amount of phenol, as representative of the transformation of a mixture of biomass-derived oxygenates and Fluid Catalytic Cracking (FCC) feedstock was studied at 350 and 450 °C over a USHY zeolite. At 350 °C, the addition of phenol increases the deactivation of the zeolite catalyst, which is due to phenol adsorption on both Brönsted and Lewis acid sites, in addition to the formation of coke from methylcyclohexane. Whatever the contact time and the phenol amount, this deactivation is always partial, which suggests that a substantial portion of the active sites of the HY zeolite is not affected by deactivation. Finally, the increase of the reaction temperature (to 450 °C) allows limiting the effect of phenol addition on the zeolite activity and stability.

AB - The transformation of a mixture of methylcyclohexane and a small amount of phenol, as representative of the transformation of a mixture of biomass-derived oxygenates and Fluid Catalytic Cracking (FCC) feedstock was studied at 350 and 450 °C over a USHY zeolite. At 350 °C, the addition of phenol increases the deactivation of the zeolite catalyst, which is due to phenol adsorption on both Brönsted and Lewis acid sites, in addition to the formation of coke from methylcyclohexane. Whatever the contact time and the phenol amount, this deactivation is always partial, which suggests that a substantial portion of the active sites of the HY zeolite is not affected by deactivation. Finally, the increase of the reaction temperature (to 450 °C) allows limiting the effect of phenol addition on the zeolite activity and stability.

KW - Bio-oils

KW - Catalytic cracking

KW - Coking

KW - Deactivation

KW - Methylcyclohexane

KW - Phenol

KW - Zeolites

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Effect of phenol addition on the performances of H-Y zeolite during methylcyclohexane transformation

Abstract

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Keywords

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