High purity fructose from inulin with heterogeneous catalysis – kinetics and modelling

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Andrea Pérez Nebreda, Tapio Salmi, Dmitry Yu Murzin, Henrik Grénman
Förläggare: Wiley
Publiceringsår: 2018
Tidskrift: Journal of Chemical Technology and Biotechnology
Tidskriftsakronym: J. Chem. Technol. Biotechnol.
Volym: 93
Nummer: 1
Artikelns första sida, sidnummer: 224
Artikelns sista sida, sidnummer: 232
Antal sidor: 9
ISSN: 0268-2575
eISSN: 1097-4660


Abstrakt

BACKGROUND
Inulin can be extracted from the non-edible chicory root and high purity fructose can be obtained from hydrolysis of inulin and used as a valuable platform molecule for further valorization. Heterogeneous catalysts are sought as alternatives to mineral acids because of costly separation and severe corrosion problems. In this work, hydrolysis of inulin was performed in a batch reactor with an advanced sulfonic resin (Smopex-101) employing HCl as a reference catalyst, at 75-95 degrees C and pH ranging from 1 to 2.

RESULTS
The reaction was shown to proceed predominantly via an end-biting mechanism. The activity of the heterogeneous catalyst was on par with the reference catalyst, with the special advantage that Smopex-101 was more selective towards monomer formation at milder reaction conditions. Mathematical modelling of the kinetics was successfully performed with a recently developed model incorporating a reaction mechanism based on an autocatalytic effect.

CONCLUSIONS
The current work demonstrates that high purity fructose can be obtained by hydrolysis of inulin employing a heterogeneous catalyst at ambient pressure. The results can be utilized directly for optimization and design purposes and they open up novel possibilities in production and process design, i.e. batch or possibly continuous operation without the need for costly separation and corrosion problems commonly encountered with homogeneous catalysts.


Nyckelord

catalytic processes, green engineering, Mathematical modelling, products

Senast uppdaterad 2019-26-05 vid 04:42