Skip navigation
Universidade Federal da Bahia |
Repositório Institucional da UFBA
Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/6312
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorAraújo, Genira Carneiro de-
dc.contributor.authorLima, Sania Maria de-
dc.contributor.authorAssaf, José Mansur-
dc.contributor.authorPeña, Miguel Antonio-
dc.contributor.authorFierro, José Luís García-
dc.contributor.authorCarmo, Maria do-
dc.creatorAraújo, Genira Carneiro de-
dc.creatorLima, Sania Maria de-
dc.creatorAssaf, José Mansur-
dc.creatorPeña, Miguel Antonio-
dc.creatorFierro, José Luís García-
dc.creatorCarmo, Maria do-
dc.date.accessioned2012-07-04T15:04:42Z-
dc.date.issued2008-
dc.identifier.issn0920-5861-
dc.identifier.urihttp://www.repositorio.ufba.br/ri/handle/ri/6312-
dc.descriptionAcesso restrito: Texto completo. p. 129-135pt_BR
dc.description.abstractThe methane reforming with carbon dioxide (dry reforming) has been proposed as one of the most promising technologies for producing hydrogen by the use of two greenhouse gases. However, undesirable coke formation is the crucial issue to develop efficient catalysts for the reaction. In order to find alternative catalysts, which can be more resistant against coke deactivation, perovskite-type oxides LaRuxNi1 xO3(0.0 < x < 1.0) were studied in this work. Samples were prepared by thermal decomposition of amorphous citrate precursors followed by heating at 800 or 1000 8C, for 12 h, in air. The solids were characterized by X-ray diffraction, temperature-programmed reduction, temperatureprogrammed desorption, specific surface area measurements and X-ray photoelectron spectroscopy. The catalysts were reduced under hydrogen and tested in methane dry reforming at 1 atm and 750 8C. The coke produced was characterized by thermogravimetry, carbon measurement and scanning and transmission electron microscopy. The oxide precursors showed low specific surface areas and different reducing behavior. All catalysts were active in the reaction. They all produced filamentous coke but it was not harmful to the catalysts. Nickel is more active and selective to hydrogen than ruthenium but the later improved the stability of the catalysts decreasing coke formation. The most promising catalyst was the LaNi0.8Ru0.2O3 sample, which was the most resistant against coke deposition. # 2008 Elsevier B.V. All rights reserved.pt_BR
dc.language.isoenpt_BR
dc.sourcehttp://dx.doi.org/10.1016/j.cattod.2007.12.049pt_BR
dc.subjectPerovskitept_BR
dc.subjectDry reformingpt_BR
dc.subjectMethanept_BR
dc.titleCatalytic evaluation of perovskite-type oxide LaNi1xRuxO3 in methane dry reformingpt_BR
dc.title.alternativeCATALYSIS TODAYpt_BR
dc.typeArtigo de Periódicopt_BR
dc.identifier.numberv. 133pt_BR
dc.embargo.liftdate10000-01-01-
Aparece nas coleções:Artigo Publicado em Periódico (Química)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
1-s2.0-S0920586107008887-main.pdf
  Restricted Access
903,38 kBAdobe PDFVisualizar/Abrir Solicitar uma cópia
Mostrar registro simples do item Visualizar estatísticas


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.