SELECTIVE HYDROGENOLYSIS OF GLYCEROL TO PROPYLENE GLYCOL IN A CONTINUOUS FLOW TRICKLE BED REACTOR USING COPPER CHROMITE AND Cu/Al2O3 CATALYSTS

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dc.citation.issue4
dc.citation.volume40
dc.contributor.authorSepulveda, Jorge
dc.contributor.authorManuale, Debora
dc.contributor.authorSantiago, Lucia
dc.contributor.authorCarrara, Nicolas
dc.contributor.authorTorres, Gerardo
dc.contributor.authorVera, Carlos
dc.contributor.authorGoncalves, Maraisa [UNIFESP]
dc.contributor.authorCarvalho, Wagner
dc.contributor.authorMandelli, Dalmo
dc.coverageSao Paulo
dc.date.accessioned2020-07-13T11:53:21Z
dc.date.available2020-07-13T11:53:21Z
dc.date.issued2017
dc.description.abstractThe glycerol hydrogenolysis reaction was performed in a continuous flow trickle bed reactor using a water glycerol feed and both copper chromite and Cu/Al2O3 catalysts. The commercial copper chromite had a higher activity than the laboratory prepared Cu/Al2O3 and was used for most of the tests. Propylene glycol was the main product with both catalysts, acetol being the main by-product. It was found that temperature is the main variable influencing the conversion of glycerol. When the state of the glycerol-water reactant mixture was completely liquid, at temperatures lower than 190 degrees C, conversion was low and deactivation was observed. At reaction temperatures of 210-230 degrees C the conversion of glycerol was complete and the selectivity to propylene glycol was stable at about 60-80% all throughout the reaction time span of 10 h, regardless of the hydrogen pressure level (1 to 20 atm). These optimal values could not be improved significantly by using other different reaction conditions or increasing the catalyst acidity. At higher temperatures (245-250 degrees C) the conversion was also 100%. Under reaction conditions at which copper chromite suffered deactivation, light by-products and surface deposits were formed. The deposits could be completely burned at 250 degrees C and the catalyst activity fully recovered.en
dc.description.affiliationUNL, CONICET, INCAPE, Inst Invest Catalisis & Petroquim, Santiago Estero 2654, RA-3000 Santa Fe, Argentina
dc.description.affiliationUniv Fed ABC, Ctr Ciencias Nat & Humanas, Rua Santa Adelia 166, BR-09210070 Santo Andre, SP, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencias & Tecnol, Rua Talim 330, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Inst Ciencias & Tecnol, Rua Talim 330, Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCAPES (Brazil)
dc.description.sponsorshipMinCyT (Argentina)
dc.description.sponsorshipCAPES/MINCyT
dc.description.sponsorshipFAPESP
dc.description.sponsorshipIDCAPES/MINCyT: 208/12
dc.description.sponsorshipIDFAPESP: 2011/22264-4
dc.format.extent371-377
dc.identifierhttp://dx.doi.org/10.21577/0100-4042.20170018
dc.identifier.citationQuimica Nova. Sao Paulo, v. 40, n. 4, p. 371-377, 2017.
dc.identifier.doi10.21577/0100-4042.20170018
dc.identifier.fileS0100-40422017000400371.pdf
dc.identifier.issn0100-4042
dc.identifier.scieloS0100-40422017000400371
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54556
dc.identifier.wosWOS:000403456300002
dc.language.isoeng
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofQuimica Nova
dc.rightsAcesso aberto
dc.subjecthydrogenolysisen
dc.subjectcopper chromiteen
dc.subjectglycerol conversionen
dc.titleSELECTIVE HYDROGENOLYSIS OF GLYCEROL TO PROPYLENE GLYCOL IN A CONTINUOUS FLOW TRICKLE BED REACTOR USING COPPER CHROMITE AND Cu/Al2O3 CATALYSTSen
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