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REDUCTIVE AMINATION OF PHENOL OVER PD-BASED CATALYSTS: ELUCIDATING THE ROLE OF THE SUPPORT AND METAL NANOPARTICLE SIZE

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dc.creatorMARAY ORTEGA DÍAZ
dc.creatorRAYDEL MANRIQUE SUAREZ
dc.creatorLUIS ERNESTO ARTEAGA PÉREZ
dc.date2022
dc.date.accessioned2025-01-10T15:35:01Z
dc.date.available2025-01-10T15:35:01Z
dc.date.issued2022
dc.description.abstractTHE HETEROGENEOUSLY CATALYZED REDUCTIVE AMINATION OF PHENOLICS FROM LIGNIN IS CONSIDERED AN ATTRACTIVE SUSTAINABLE ROUTE FOR THE SYNTHESIS OF PRIMARY OR HIGH-ORDER AROMATIC AND ALIPHATIC AMINES. HERE, THE REDUCTIVE AMINATION OF PHENOL WITH CYCLOHEXYLAMINE WAS STUDIED, AND INSIGHTS INTO THE ROLE OF THE CATALYST SUPPORT, METAL NANOPARTICLE SIZES, AND ACIDIC PROPERTIES WERE PROVIDED. BULK AND SURFACE CHARACTERIZATION, IR EXPERIMENTS, AND KINETIC MEASUREMENTS WERE PERFORMED, AND THEIR RESULTS WERE CORRELATED WITH THE CATALYTIC PERFORMANCE AND THE CONTENT OF LEWIS ACID SITES (PD/AL2O3 > PD/C > PD/SIO2). THE LEWIS ACID SITES IN THE SUPPORT AND THOSE FORMED BY H2 SPILLOVER ASSISTED PHENOL HYDROGENATION AND C?N BOND ACTIVATION, ENHANCING THE FORMATION OF SECONDARY AMINES (SELECTIVITY >90%). THE PD COORDINATION IN THE PARTICLES STRONGLY AFFECTED THE CATALYTIC ACTIVITY, INDICATING THAT PHENOL AMINATION IS A STRUCTURE-SENSITIVE REACTION. THE TURNOVER FREQUENCY VS. DISPERSION PROFILES COMBINED WITH THE SITE DISTRIBUTIONS IN THE PD PARTICLES (EDGE, CORNER, AND TERRACES) INDICATE THAT LOW-COORDINATION SITES FAVOR PHENOL AMINATION, WHICH WAS CONFIRMED VIA DIFFUSE REFLECTANCE INFRARED SPECTROSCOPY WITH FOURIER TRANSFORM AND HIGH-RESOLUTION TRANSMISSION ELECTRON MICROSCOPY. THIS STUDY COULD CONTRIBUTE TO THE UPCYCLING OF FRESH AND RECYCLED LIGNIN FRACTIONS TO PRODUCE AROMATIC AND ALIPHATIC AMINES.
dc.formatapplication/pdf
dc.identifier.doi10.1039/D2RE00259K
dc.identifier.issn2058-9883
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12699
dc.languagespa
dc.publisherREACTION CHEMISTRY & ENGINEERING
dc.relation.uri10.1039/D2RE00259K
dc.rightsPUBLICADA
dc.subjectTAMAÑO DE PARTÍCULA
dc.subjectPALADIO
dc.subjectOXIDACIÓN DE COTAMAÑO DE GRANO
dc.subjectN-ALQUILACIÓN
dc.subjectMONÓXIDO DE CARBONO
dc.subjectHIDROGENACIÓN SELECTIVA
dc.subjectGAMMA-ALÚMINA
dc.subjectCICLOHEXANONA
dc.subjectAMINAS PRIMARIAS
dc.titleREDUCTIVE AMINATION OF PHENOL OVER PD-BASED CATALYSTS: ELUCIDATING THE ROLE OF THE SUPPORT AND METAL NANOPARTICLE SIZE
dc.title.alternativeREDUCTIVO AMINACIÓN DE FENOL SOBRE BASADO EN PD CATALIZADORES: DILUCIDAR EL ROL DE EL APOYO Y METAL NANOPARTÍCULA TAMAÑO
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.Otra ReparticionPROGRAMA DE ASISTENCIA TECNICA CON CO-FINANCIAMIENTO
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
ubb.SedeCONCEPCIÓN
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