Publicación:
CARBON AEROGEL-SUPPORTED NICKEL AND IRON FOR GASIFICATION GAS CLEANING. PART I: AMMONIA ADSORPTION.

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dc.creatorLUIS ERNESTO ARTEAGA PÉREZ
dc.date2018
dc.date.accessioned2025-01-10T15:02:15Z
dc.date.available2025-01-10T15:02:15Z
dc.date.issued2018
dc.description.abstractBIOMASS GASIFICATION IS A PROMISING WAY TO OBTAIN ?GREEN ENERGY?, BUT THE GAS COMPOSITION MAKES IT UNSUITABLE FOR USE IN TRADITIONAL TECHNOLOGIES (I.E., IC ENGINE). GAS PURIFICATION OVER NICKEL AND/OR IRON CATALYSTS IS AN ATTRACTIVE ALTERNATIVE. CELLULOSE-BASED CARBON AEROGELS (CAGS) HAVE SHOWN SUITABLE PHYSICAL CHEMICAL PROPERTIES FOR USE AS CATALYST SUPPORTS. IN THIS WORK, NICKEL AND IRON CATALYSTS ARE SUPPORTED ON CAG MADE FROM CELLULOSE MICROFIBERS. MICROFIBERS WERE IMPREGNATED WITH (NH4)2SO4 TO INCREASE THE MASS YIELD. CARBONIZATION WAS EVALUATED AT DIFFERENT HEATING RATES, MAXIMUM TEMPERATURES, AND DWELL TIMES TO GENERATE CAGS. RESULTING CHARS WERE CHARACTERIZED BY N2 ADSORPTION, X-RAY DIFFRACTION (XRD), AND RAMAN SPECTROSCOPY. THE CAG WITH BETTER PROPERTIES (SPECIFIC SURFACE, PORE SIZE, THERMAL RESISTANCE) WAS IMPREGNATED WITH THE METAL PRECURSOR SALT VIA INCIPIENT WETNESS AND TREATED WITH H2. CATALYSTS WERE CHARACTERIZED BY TRANSMISSION ELECTRON MICROSCOPY (TEM), XRD, N2 ADSORPTION, AND INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMETRY (ICP-OES). AMMONIA ADSORPTION WAS STUDIED OVER CAG AND CATALYSTS TO ESTIMATE THE THERMODYNAMIC PARAMETERS. THE IMPREGNATION WITH ((NH4)2SO4 IMPROVES THERMAL RESISTANCE OF THE CHAR OBTAINED FROM CARBONIZATION. THE CATALYSTS EXHIBIT HIGHER ADSORPTION CAPACITY THAN CAG (WITHOUT METAL), INDICATING CHEMICAL INTERACTION BETWEEN AMMONIA AND METALS. THE METAL-AMMONIA INTERACTION IS STRONGER ON FE THAN ON NI CATALYST, WHICH IS CONSISTENT WITH REPORTED THEORETICAL CALCULATIONS.
dc.formatapplication/pdf
dc.identifier.doi10.3390/catal8090347
dc.identifier.issn2073-4344
dc.identifier.issn2073-4344
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/10115
dc.languagespa
dc.publisherCatalysts
dc.relation.uri10.3390/catal8090347
dc.rightsPUBLICADA
dc.titleCARBON AEROGEL-SUPPORTED NICKEL AND IRON FOR GASIFICATION GAS CLEANING. PART I: AMMONIA ADSORPTION.
dc.title.alternativeNÍQUEL Y HIERRO SOPORTADOS POR AEROGEL DE CARBONO PARA LA LIMPIEZA DE GASES DE GASIFICACIÓN. PARTE I: ADSORCIÓN DE AMONÍACO
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA EN MADERAS
ubb.SedeCONCEPCIÓN
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