Characterization of silica supported chromium complexes

dc.creatorParentis, Monica Liliana
dc.creatorBonini, Norberto Alejandro
dc.creatorGonzo, Elio Emilio
dc.date.accessioned2019-04-03T18:30:23Z
dc.date.accessioned2022-10-14T22:39:41Z
dc.date.available2019-04-03T18:30:23Z
dc.date.available2022-10-14T22:39:41Z
dc.date.created2019-04-03T18:30:23Z
dc.date.issued2000-03
dc.identifierParentis, Monica Liliana; Bonini, Norberto Alejandro; Gonzo, Elio Emilio; Characterization of silica supported chromium complexes; Planta Piloto de Ingeniería Química; Latin American Applied Research; 30; 1; 3-2000; 41-50
dc.identifier0327-0793
dc.identifierhttp://hdl.handle.net/11336/73079
dc.identifier1851-8796
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4315003
dc.description.abstractThe Cr/SiO2 catalysts were prepared via the deposition of mononuclear and binuclear chromium (III) ammine complexes on silica. The influence of chromium loading and calcination temperatura upon the type of species formed was determined. FTIR and Raman studies revealed the presence of Cr(VI) species as monomers and dimers in calcined catalysts and the existence of a chemical interaction between the complex chromium ions and the support. Futhemore, IR of adsorbed pyridine showed the presence of Lewis centers just before calcination. After calcination Brönsted sites were developed, these sites were related to the presence of Cr(VI) species. The relative concentration of such centers depends on the ammount of chromium exchanged.
dc.languageeng
dc.publisherPlanta Piloto de Ingeniería Química
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/i30_1.htm
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectChromium Complexes
dc.subjectChromium-Silica
dc.subjectIon Exchange
dc.subjectPyridine
dc.titleCharacterization of silica supported chromium complexes
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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