dc.creatorGatti, Martín Nicolás
dc.creatorPompeo, Francisco
dc.creatorSantori, Gerardo Fabián
dc.creatorNichio, Nora Nancy
dc.date2017
dc.date2020-11-06T18:58:02Z
dc.date.accessioned2023-07-14T23:15:18Z
dc.date.available2023-07-14T23:15:18Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/108518
dc.identifierhttps://www.sciencedirect.com/science/article/abs/pii/S0920586117302225
dc.identifierissn:0920-5861
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7449941
dc.descriptionThe development of catalytic materials, hydrothermally stable and selective to the desired products, is still a challenge. The aim of the present work is to prepare a nickel catalyst with a metal loading of 5 wt% Ni supported on a SiO<sub>2</sub>-C composite, to be used in the liquid-phase glycerol hydrogenolysis reaction. The most active and selective catalyst to 1,2-propylene glycol (1,2-PG) was Ni/SC-095, which presented surface acidity fundamentally represented by the presence of carboxylic groups which promoted the CeO cleavage reactions of the glycerol primary carbon to produce acetol, and subsequently by hydrogenation to produce 1,2-PG. Concerning the selection of operating conditions, the influence of the most relevant variables of the process were analyzed, i.e., temperature (220–260 °C), glycerol concentration (30–65%), and hydrogen partial pressure (0–4 MPa). The best result was obtained at 260 °C with 30 wt% glycerol, 6 h on reaction and a hydrogen partial pressure of 2 MPa. Under these conditions, selectivities of 77% towards 1,2-PG and 3% to acetol were obtained, with 56% of conversion. It was demonstrated that there are no important structural changes through the characterization of the used samples. Both the SC-095 support and the Ni/SC-095 catalyst maintained their BET surface area. By XRD and TEM, there could be a slight increase in particle size, which would indicate good resistance to sintering against the severe hydrothermal conditions of this reaction.
dc.descriptionFacultad de Ingeniería
dc.descriptionCentro de Investigación y Desarrollo en Ciencias Aplicadas
dc.formatapplication/pdf
dc.format26-34
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectIngeniería
dc.subjectCiencias Exactas
dc.subjectbio-propylene glycol
dc.subjecthydrogenolysis
dc.subjectnickel catalysts
dc.subjectglycerol
dc.titleBio-propylene glycol by liquid phase hydrogenolysis of glycerol with Ni/SiO<sub>2</sub>-C catalysts
dc.typeArticulo
dc.typePreprint


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