Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite

dc.creatorLima, Patrícia M.
dc.creatorGaretto, Teresita Francisca
dc.creatorCavalcante Jr., Célio L.
dc.creatorCardoso, Dilson
dc.date.accessioned2019-06-20T23:50:05Z
dc.date.accessioned2022-10-15T01:17:47Z
dc.date.available2019-06-20T23:50:05Z
dc.date.available2022-10-15T01:17:47Z
dc.date.created2019-06-20T23:50:05Z
dc.date.issued2011-08
dc.identifierLima, Patrícia M.; Garetto, Teresita Francisca; Cavalcante Jr., Célio L.; Cardoso, Dilson; Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 195-202
dc.identifier0920-5861
dc.identifierhttp://hdl.handle.net/11336/78584
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4329075
dc.description.abstractThe zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear paraffins was determined by ZLC chromatography. Desorption from Beta zeolite was faster than from USY zeolite. IR acidity analysis by adsorption and desorption of pyridine showed that Beta zeolite has a smaller number of Brønsted acid sites than USY zeolite, but that they are a little stronger. Pt-Ni/H-BEA catalysts showed higher activity than Pt-Ni/H-USY ones. This behavior can be attributed to the very small crystallites of Beta zeolite, which enable faster diffusion of the reactant and products molecules. Among bimetallic catalysts, the highest activity was observed with that containing 60% Pt. This result is very interesting in view of the cost reduction, relative to 100% Pt catalyst.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cattod.2011.02.031
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectALKANE ISOMERIZATION
dc.subjectBETA ZEOLITE
dc.subjectBIMETALLIC CATALYST
dc.subjectNANOSIZED CRYSTALS
dc.titleIsomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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