Effect of alkali cations on the CuZnOAl2O3 low temperature water gasshift catalyst

dc.creatorFigueiredo, Renan Tavares
dc.creatorSantos, Marluce S.
dc.creatorAndrade, Heloysa Martins Carvalho
dc.creatorFierro, José Luís Garcia
dc.creatorFigueiredo, Renan Tavares
dc.creatorSantos, Marluce S.
dc.creatorAndrade, Heloysa Martins Carvalho
dc.creatorFierro, José Luís Garcia
dc.date.accessioned2022-10-07T15:10:42Z
dc.date.available2022-10-07T15:10:42Z
dc.date.issued2011
dc.identifier0920-5861
dc.identifierhttp://www.repositorio.ufba.br/ri/handle/ri/5442
dc.identifierv. 172.
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/4004451
dc.description.abstractLow temperature water gasshift catalysts containing 1.0% by weight of alkali elements (Li, K, Rb and Cs) were prepared by impregnation of a ternary Cu/ZnO/Al2O3 (CZA) base catalyst. The calcined precursors were characterized by different physical and chemical techniques such as Xray diffraction, Xray fluorescence, N2O chemisorption, N2 adsorption at low temperature and Xray photoelectron spectroscopy. Then these precursors were activated and tested in the low temperature water gasshift reaction (LTWGS). It was shown that the Kcontaining CZA catalyst exhibited the highest CO conversion level at reaction temperature within the range 450–530 K. In addition, the alkali promoters were found to prevent methanol production at temperatures higher than 480 K.
dc.languageen
dc.sourcedoi:10.1016/j.cattod.2011.03.073
dc.subjectLow temperature water gasshift
dc.subjectreaction
dc.subjectAlkali promoters
dc.subjectMethanol synthesis
dc.subjectSelectivity
dc.titleEffect of alkali cations on the CuZnOAl2O3 low temperature water gasshift catalyst
dc.typeArtigo de Periódico


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