304
IRUS Total
Downloads
  Altmetric

Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts

File Description SizeFormat 
glucose isomerisation Manuscript_accepted.pdfAccepted version926.77 kBAdobe PDFView/Open
Title: Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts
Authors: Graca, I
Iruretagoyena, D
Chadwick, D
Item Type: Journal Article
Abstract: The performance of magnesium-impregnated NaY zeolite catalysts for the glucose isomerisation into fructose at 100 °C has been evaluated. Although crystallinity and textural properties of the zeolites are reduced through Mg addition, glucose conversion improves (6–49%) by increasing magnesium content (0–15 wt.%) due to an increase of the number of basic sites. Conversely, selectivity to fructose drops (96–66%). Nevertheless, good fructose yields were still reached with 10 and 15 wt.% of magnesium (about 32%), being similar or even higher than those found for a commercial hydrotalcite and a pure magnesium oxide. Catalysts lose performance through carbon retention and cations leaching. Deactivation of magnesium-based zeolites was further investigated by consecutive reaction runs. If no regeneration of the catalyst is performed, the activity of the zeolites decreases mainly as a result of cations leaching, the effect reducing with the number of runs. Regeneration allows the catalyst to recover almost totally its initial activity. Interestingly, used samples show higher fructose selectivity due to the additional pore opening resulting from cations leaching and/or carbon removal. Cations leaching results in a homogeneous catalytic reaction which is most significant for the highest magnesium content. Magnesium-based NaY zeolites are revealed as potential catalysts for glucose isomerisation into fructose with high fructose productivities and good performance in consecutive reactions combined with intermediate regeneration.
Issue Date: 5-Jun-2017
Date of Acceptance: 14-Jan-2017
URI: http://hdl.handle.net/10044/1/49631
DOI: 10.1016/j.apcatb.2017.01.037
ISSN: 0926-3373
Publisher: Elsevier
Start Page: 434
End Page: 443
Journal / Book Title: Applied Catalysis B: Environmental
Volume: 206
Issue: 1
Copyright Statement: © 2017 Elsevier B.V. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K014749/1
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Engineering, Environmental
Engineering, Chemical
Chemistry
Engineering
Glucose
Fructose
Isomerisation
Zeolites
Magnesium
CARBON-DIOXIDE
CONVERSION
BIOMASS
BIOREFINERY
CHEMISTRY
BIOFUELS
TRENDS
FUELS
OXIDE
TPD
Physical Chemistry
0306 Physical Chemistry (incl. Structural)
0904 Chemical Engineering
0907 Environmental Engineering
Publication Status: Published
Online Publication Date: 2017-01-17
Appears in Collections:Chemical Engineering
Faculty of Engineering