Mesoporous zirconia-based mixed oxides as versatile acid catalysts for producing bio-additives from furfuryl alcohol and glycerol
authors Neves, P; Russo, PA; Fernandes, A; Antunes, MM; Farinha, J; Pillinger, M; Ribeiro, MF; Castanheiro, JE; Valente, AA
nationality International
journal APPLIED CATALYSIS A-GENERAL
author keywords Biomass; Levulinate esters; Glycerol acetals; Acid catalysis; Zirconium; Mixed oxides
keywords ETHYL LEVULINATE; HETEROGENEOUS CATALYSIS; LIGNOCELLULOSIC BIOMASS; FUEL ADDITIVES; CONVERSION; TUNGSTEN; DEHYDRATION; ACETALIZATION; HYDROGENATION; ISOMERIZATION
abstract Mesostructured zirconium-based mixed oxides (MZM) are versatile solid acid catalysts for the chemical valorisation of biomass, within sugar and fatty acid platforms of biorefineries. MZM catalysts containing tungsten and/or aluminium were prepared via a templating route that allows the texture and acid properties to be improved. Their catalytic potential was explored for synthesising different types of interesting oxygenated fuel bio-additives, specifically levulinate esters, furfuryl alkyl ethers and glycerol acetals of the type 1,3-dioxolane and 1,3-dioxane. Levulinate esters are synthesised from furfuryl alcohol (FA), which is produced industrially from lignocelluloses; the acetals are obtained from glycerol, which is a coproduct of the industrial production of biodiesel. The performances of the MZM catalysts have been compared with those of zirconium-(tungsten and/or aluminium) mixed oxides synthesised via conventional co-precipitation (without a template). Structure-activity relationships were established which reveal advantages of the templating route used for the synthesis of the MZM catalysts. The MZM catalysts were more active and led to higher total yields of bio-additives (e.g. up to 86% yield at 100% FA conversion, 140 degrees C, 30 min reaction) than the catalysts prepared by co-precipitation (e.g. up to 45% yield at 88% FA conversion), under similar reaction conditions. Detailed catalytic and characterisation studies were carried out for the used catalysts. (C) 2014 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0926-860X
year published 2014
volume 487
beginning page 148
ending page 157
digital object identifier (doi) 10.1016/j.apcata.2014.08.042
web of science category Chemistry, Physical; Environmental Sciences
subject category Chemistry; Environmental Sciences & Ecology
unique article identifier WOS:000345479000016
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 5.006
5 year journal impact factor 4.831
category normalized journal impact factor percentile 77.736
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg