Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/5980
Title: Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2.
Authors: Balzer, Rosana
Probst, Luiz Fernando Dias
Drago, V.
Schreiner, W. H.
Fajardo, Humberto Vieira
Keywords: Cobalt catalysts
Issue Date: 2014
Citation: BALZER, R. et al. Catalytic oxidation of volatile organic compounds (n-hexane, benzene, toluene, o-xylene) promoted by cobalt catalysts supported on γ-Al2O3-CeO2. Brazilian Journal of Chemical Engineering, v. 31, p. 757-769, 2014. Disponível em: <http://www.scielo.br/pdf/bjce/v31n3/18.pdf>. Acesso em: 21 out. 2015.
Abstract: Cobalt catalysts supported on γ-alumina, ceria and γ-alumina-ceria, with 10 or 20%wt of cobalt load, prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission transmission electron microscopy (FETEM), N2 adsorptiondesorption isotherms (BET/BJH methods), energy-dispersive X-ray spectroscopy (EDX), X-ray photoemission spectroscopy (XPS), O2-chemisorption and temperature programmed reduction (TPR) were used to promote the oxidation of volatile organic compounds (n-hexane, benzene, toluene and o-xylene). For a range of low temperatures (50-350 °C), the activity of the catalysts with a higher cobalt load (20% wt) was greater than that of the catalysts with a lower cobalt load (10% wt). The Co/γ-Al2O3-CeO2 catalytic systems presented the best performances. The results obtained in the characterization suggest that the higher catalytic activity of the Co20/γ-Al2O3-CeO2 catalyst may be attributed to the higher metal content and amount of oxygen vacancies, as well as the effects of the interaction between the cobalt and the alumina and cerium oxides.
URI: http://www.repositorio.ufop.br/handle/123456789/5980
metadata.dc.identifier.doi: http://dx.doi.org/10.1590/0104-6632.20140313s00002802
ISSN: 0104-6632
metadata.dc.rights.license: Todo o conteúdo do periódico Brazilian Journal of Chemical Engineering, exceto onde identificado, está sob uma licença Creative Commons 4.0 que permite copiar, distribuir e transmitir o trabalho em qualquer suporte ou formato desde que sejam citados o autor e o licenciante. Não permite o uso para fins comerciais. Fonte: Brazilian Journal of Chemical Engineering <http://www.scielo.br/scielo.php?script=sci_serial&pid=0104-6632&lng=en&nrm=iso>. Acesso em: 20 ago. 2019.
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