Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/6682
Title: Efficient ceria – silica catalysts for BTX oxidation : probing the catalytic performance and oxygen storage.
Authors: Silva, Anderson Gabriel Marques da
Fajardo, Humberto Vieira
Balzer, Rosana
Probst, Luiz Fernando Dias
Prado, Nayara Teodoro do
Camargo, Pedro Henrique Cury
Dutenhefner, Patricia Alejandra Robles
Keywords: Ceria silica catalyst
Issue Date: 2016
Citation: SILVA, A. G. M. da et al. Efficient ceria – silica catalysts for BTX oxidation: probing the catalytic performance and oxygen storage. Chemical Engineering Journal, v. 286, p. 369-376, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1385894715015089>. Acesso em: 16 jun. 2016.
Abstract: This paper describes a systematic investigation on the synthesis of CeO2 supported on SiO2 by two different methods: (i) the in situ incorporation of CeO2 onto MCM-41 and (ii) wet impregnation. We were interested in investigating how the CeO2 preparation could influence their physicochemical properties and catalytic performances towards the benzene, toluene, and o-xylene (BTX) oxidation reactions. Our results showed that the catalytic performances were strongly dependent on the synthetic approach, in which the CeO2–MCM-41 material prepared by the in situ incorporation showed better BTX oxidation activities than the CeO2-based catalysts prepared by conventional wet impregnation. This result could be assigned to the higher specific surface area, better interaction between CeO2 and the support, improved Ce4+/Ce3+ redox process, and higher concentration of oxygen vacancies as enabled by the in situ approach. The influence of CeO2 content in the ordering of the SiO2 mesoporous structure was also demonstrated.
URI: http://www.repositorio.ufop.br/handle/123456789/6682
metadata.dc.identifier.doi: https://doi.org/10.1016/j.cej.2015.10.097
ISSN: 1385-8947
metadata.dc.rights.license: O periódico Chemical Engineering Journal concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3898810750112.
Appears in Collections:DEQUI - Artigos publicados em periódicos

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