Treatments of Lignocellulosic Hydrolysates and Continuous‐Flow Hydrogenation of Xylose to Xylitol

Xylitol is produced by the heterogeneous catalytic hydrogenation of xylose over Raney nickel. The hydrogenation must typically be followed by several purification steps, which makes the chemical production relatively complex and expensive. In this study, activated carbon and bio‐purification treatme...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering & technology 2018-03, Vol.41 (3), p.496-503
Main Authors: Fehér, Anikó, Fehér, Csaba, Rozbach, Margaréta, Rácz, Gergely, Fekete, Melinda, Hegedűs, László, Barta, Zsolt
Format: Article
Language:English
Subjects:
Activated carbon
Biomass
Bio‐purification
Catalysis
Catalysts
Corn
Flow velocity
Hydrogenation
Hydrolysates
H‐Cube
Lignocellulose
Maize stover
Nickel
Purification
Xylitol
Xylose
Yeast
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Xylitol is produced by the heterogeneous catalytic hydrogenation of xylose over Raney nickel. The hydrogenation must typically be followed by several purification steps, which makes the chemical production relatively complex and expensive. In this study, activated carbon and bio‐purification treatments of corn stover hydrolysates and subsequent nickel‐catalyzed hydrogenation of xylose to xylitol were investigated. The activated carbon treatment was used to eliminate inhibitory compounds and increase the efficiency of the bio‐purification step. It was found that the glucose could be completely eliminated from the hydrolysate. The hydrogenation reactions of corn stover hydrolysate demonstrated that a high reaction temperature resulted in high sugar alcohol yields and selectivity. At a given temperature, the flow rate had no significant effect on xylitol yield. Xylitol has important applications as a natural food sweetener and preventative agent against dental caries, but its chemical production remains relatively complex and expensive. Activated carbon and bio‐purification treatments of corn stover hydrolysates and subsequent nickel‐catalyzed, continuous‐flow hydrogenation of xylose to xylitol were investigated, affording high yields and selectivities.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201700103