dc.creatorRamos, Márcia de Souza
dc.creatorSantos, Manuela de Santana
dc.creatorGomes, Lucimar Pacheco
dc.creatorAlbornoz, Alberto
dc.creatorVarela, Maria do Carmo Rangel Santos
dc.creatorRamos, Márcia de Souza
dc.creatorSantos, Manuela de Santana
dc.creatorGomes, Lucimar Pacheco
dc.creatorAlbornoz, Alberto
dc.creatorVarela, Maria do Carmo Rangel Santos
dc.date.accessioned2022-10-07T15:26:42Z
dc.date.available2022-10-07T15:26:42Z
dc.date.issued2008
dc.identifier0926-860X
dc.identifierhttp://www.repositorio.ufba.br/ri/handle/ri/6128
dc.identifierv. 341, n. 1-2
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/4005094
dc.description.abstractThe effect of neodymium, lanthanum, aluminum and zirconium on the textural and catalytic properties of hematite was studied in this work, which aimed to develop catalysts to ethylbenzene dehydrogenation, in the presence of steam, the main commercial route to obtain styrene. Hematite and magnetite were found in fresh and spent catalysts, respectively. All dopants increased the specific surface area of the fresh and spent catalysts and made them more resistant against reduction, but only aluminum avoided sintering during reaction. The dopants increased the catalytic activity per area of hematite, except aluminumwhich acted only as a textural promoter. The selectivity was decreased due to zirconium and lanthanum while the other dopants did not change this parameter. The neodymiumcontaining catalyst showed high levels of activity and selectivity and was able to work up to 530 8C, without deactivation, being the most promising with regard to styrene production.
dc.languageen
dc.sourcehttp://dx.doi.org/10.1016/j.apcata.2007.12.035
dc.subjectStyrene
dc.subjectEthylbenzene
dc.subjectHematite
dc.titleThe influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
dc.typeArtigo de Periódico


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