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dc.contributor.authorAraújo, Genira Carneiro de-
dc.contributor.authorVarela, Maria do Carmo Rangel Santos-
dc.creatorAraújo, Genira Carneiro de-
dc.creatorVarela, Maria do Carmo Rangel Santos-
dc.date.accessioned2012-11-26T19:55:23Z-
dc.date.issued2000-11-
dc.identifier.issn0920-5861-
dc.identifier.urihttp://www.repositorio.ufba.br/ri/handle/ri/7281-
dc.descriptionp.201–207pt_BR
dc.description.abstractThe high-temperature shift (HTS) reaction is an important step in industrial processes and gas purification. Although the catalyst shows a stable performance, the search for non-toxic systems is much needed, especially due to environmental restrictions related to chromium compounds. In this work, the performance of aluminum-doped catalysts with low amounts of copper was investigated, because of the role of copper on decreasing the surface area of the catalysts based on iron oxides. Samples were prepared by precipitation methods, characterized by several techniques and evaluated under different conditions, in order to find operational conditions more effective in the use of energy. The addition of small amounts of copper to aluminum-doped hematite leads to better catalytic properties. Likely, copper behaves as a structural promoter while aluminum is a textural one. The catalyst can work at more severe conditions than the industrial condition, that is, lower steam to gas molar ratio (S/G=0.4) and at a lower temperature (350°C). In addition, it can be easily handled and discarded without any damage to the environment or human beings.pt_BR
dc.language.isoenpt_BR
dc.publisherElsevierpt_BR
dc.sourcehttp://dx.doi.org/10.1016/S0920-5861(00)00421-1pt_BR
dc.subjectEnvironmental friendly dopantpt_BR
dc.subjectShift reactionpt_BR
dc.subjectMagnetitept_BR
dc.titleAn environmental friendly dopant for the high-temperature shift catalystspt_BR
dc.title.alternativeCatalysis Todaypt_BR
dc.typeArtigo de Periódicopt_BR
dc.identifier.numberv. 62, n. 2-3pt_BR
dc.embargo.liftdate10000-01-01-
Aparece nas coleções:Artigo Publicado em Periódico (Química)

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