Volatile organic compounds abatement over copper-based catalysts: Effect of support

M. Konsolakis; S. A.C. Carabineiro; G. E. Marnellos; Faizan Asad; O. S.G.P. Soares; M. F.R. Pereira; J. J.M. Órfão; J. L. Figueiredo

doi:10.1016/j.ica.2016.07.059

Volatile organic compounds abatement over copper-based catalysts: Effect of support

M. Konsolakis^*, S. A.C. Carabineiro, G. E. Marnellos, Faizan Asad, O. S.G.P. Soares, M. F.R. Pereira, J. J.M. Órfão, J. L. Figueiredo

^*Corresponding author for this work

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Abstract

The effect of the support was explored for Cu-based catalysts on the oxidation of ethyl acetate (EtOAc), a common volatile organic compound. In particular, four Rare Earth Oxide(s) (REO), namely CeO₂, Gd₂O₃, La₂O₃and Sm₂O₃, were used as supports to obtain the Cu/REO catalysts. The samples were characterized by N₂adsorption at −196 °C (to determine the surface area), scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction to gain insight into the impact of textural, structural and redox properties on the catalytic efficiency. The following sequence, in terms of EtOAc conversion, was revealed: Cu/CeO₂> Cu/Gd₂O₃> Cu/Sm₂O₃> Cu/La₂O₃, which is closely related to the redox properties of the Cu/REO samples, in terms of reducibility and labile oxygen availability. Complete EtOAc conversion was achieved at temperatures as low as 275 °C over Cu/CeO₂, which was the most efficient catalyst.

Original language	English
Pages (from-to)	473-482
Number of pages	10
Journal	Inorganica Chimica Acta
Volume	455
Issue number	Part 2
DOIs	https://doi.org/10.1016/j.ica.2016.07.059
Publication status	Published - 2017
MoE publication type	A1 Journal article-refereed

Funding

SACC thanks Funda??o para a Ci?ncia e Tecnologia (FCT) for financial support, including Investigador FCT program (IF/01381/2013/CP1160/CT0007), with financing from the European Social Fund and the Human Potential Operational Program. OSGPS also acknowledge FCT for grant SFRH/BPD/97689/2013. This work was financially supported by Project POCI-01-0145-FEDER-006984 ? Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 ? Programa Operacional Competitividade e Internacionaliza??o (POCI) ? and by national funds through FCT ? Funda??o para a Ci?ncia e a Tecnologia. MK is thankful for the Greece?Portugal Bilateral Educational Programme. FA is grateful for IAESTE funding (PT/2014/34). Authors are thankful to Dr. Carlos M. S? (CEMUP) for assistance with SEM and XPS analyses. SACC thanks Fundação para a Ciência e Tecnologia ( FCT ) for financial support, including Investigador FCT program (IF/01381/2013/CP1160/CT0007), with financing from the European Social Fund and the Human Potential Operational Program. OSGPS also acknowledge FCT for grant SFRH/BPD/97689/2013. This work was financially supported by Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 – Programa Operacional Competitividade e Internacionalização (POCI) – and by national funds through FCT – Fundação para a Ciência e a Tecnologia. MK is thankful for the Greece–Portugal Bilateral Educational Programme. FA is grateful for IAESTE funding (PT/2014/34). Authors are thankful to Dr. Carlos M. Sá (CEMUP) for assistance with SEM and XPS analyses.

Keywords

CeO
Copper (Cu)-based catalysts
Ethyl acetate (EtOAc) oxidation
GdO
LaO
SmO
Volatile organic compounds (VOCs)

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10.1016/j.ica.2016.07.059

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title = "Volatile organic compounds abatement over copper-based catalysts: Effect of support",

abstract = "The effect of the support was explored for Cu-based catalysts on the oxidation of ethyl acetate (EtOAc), a common volatile organic compound. In particular, four Rare Earth Oxide(s) (REO), namely CeO2, Gd2O3, La2O3and Sm2O3, were used as supports to obtain the Cu/REO catalysts. The samples were characterized by N2adsorption at −196 °C (to determine the surface area), scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction to gain insight into the impact of textural, structural and redox properties on the catalytic efficiency. The following sequence, in terms of EtOAc conversion, was revealed: Cu/CeO2> Cu/Gd2O3> Cu/Sm2O3> Cu/La2O3, which is closely related to the redox properties of the Cu/REO samples, in terms of reducibility and labile oxygen availability. Complete EtOAc conversion was achieved at temperatures as low as 275 °C over Cu/CeO2, which was the most efficient catalyst.",

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AU - Asad, Faizan

AU - Soares, O. S.G.P.

AU - Pereira, M. F.R.

AU - Órfão, J. J.M.

AU - Figueiredo, J. L.

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AB - The effect of the support was explored for Cu-based catalysts on the oxidation of ethyl acetate (EtOAc), a common volatile organic compound. In particular, four Rare Earth Oxide(s) (REO), namely CeO2, Gd2O3, La2O3and Sm2O3, were used as supports to obtain the Cu/REO catalysts. The samples were characterized by N2adsorption at −196 °C (to determine the surface area), scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction to gain insight into the impact of textural, structural and redox properties on the catalytic efficiency. The following sequence, in terms of EtOAc conversion, was revealed: Cu/CeO2> Cu/Gd2O3> Cu/Sm2O3> Cu/La2O3, which is closely related to the redox properties of the Cu/REO samples, in terms of reducibility and labile oxygen availability. Complete EtOAc conversion was achieved at temperatures as low as 275 °C over Cu/CeO2, which was the most efficient catalyst.

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Volatile organic compounds abatement over copper-based catalysts: Effect of support

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Keywords

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