Glucose isomerisation into fructose over magnesium-impregnated NaY zeolite catalysts
File(s)
Accepted version
Author(s)
Graca, I
Iruretagoyena, D
Chadwick, D
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.
Date Issued
2017-06-05
Date Acceptance
2017-01-14
Citation
Applied Catalysis B: Environmental, 2017, 206 (1), pp.434-443
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
Engineering & Physical Science Research Council (EPSRC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000395602000045&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/K014749/1
Subjects
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
Date Publish Online
2017-01-17