dc.creatorDi Cosimo, Juana Isabel
dc.creatorAcosta, A.
dc.creatorApesteguia, Carlos Rodolfo
dc.date.accessioned2019-04-02T19:55:19Z
dc.date.accessioned2022-10-15T00:14:43Z
dc.date.available2019-04-02T19:55:19Z
dc.date.available2022-10-15T00:14:43Z
dc.date.created2019-04-02T19:55:19Z
dc.date.issued2005-06
dc.identifierDi Cosimo, Juana Isabel; Acosta, A.; Apesteguia, Carlos Rodolfo; Allylic alcohol synthesis by gas-phase hydrogen transfer reduction of unsaturated ketones; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 234; 1-2; 6-2005; 111-120
dc.identifier1381-1169
dc.identifierhttp://hdl.handle.net/11336/73026
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4323558
dc.description.abstractThe gas-phase hydrogen transfer reduction (HTR) of mesityl oxide (MO) with 2-propanol to selectively obtain allylic alcohols was studied on MgO. MO was converted directly to 4-methyl-3-penten-2ol (UOL1) or isomerised to iso-mesityl oxide (i-MO), which consecutively formed 4-methyl-4-penten-2ol (UOL2). Significant amounts of methyl isobutyl carbinol (MIBC) were also formed by the simultaneous reduction of CC and CO groups of MO. The effect of reaction conditions on catalyst activity and selectivity was determined in order to improve total UOL yield that was about 28% under standard reaction conditions (T = 523 K, 2-propanol/MO = 5, W/FMO0 = 15 g h/mol). Total UOL yield increased continuously with contact time up to 42% but when the 2-propanol/MO ratio was varied, UOL yield reached a maximum at a reactant ratio of about 4. UOL2 yield markedly increased with temperature at expenses of MIBC. The increase of temperature also improved the catalyst stability because suppressed formation of coke intermediates. Regarding the effect of the hydrogen donor, higher total UOL yields were obtained by using secondary alcohols, such as 2-propanol and 2-butanol, than primary (1-propanol) or secondary aryl (1-penylethanol) alcohols.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.molcata.2005.03.002
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectΑ,Β-UNSATURATED KETONE
dc.subjectBASIC CATALYSIS
dc.subjectCHEMOSELECTIVITY
dc.subjectHYDROGEN TRANSFER
dc.subjectREDUCTION
dc.titleAllylic alcohol synthesis by gas-phase hydrogen transfer reduction of unsaturated ketones
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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