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Hemicellulose Hydrolysis in the Presence of Heterogeneous Catalysts

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Abstract

A prominent autocatalytic effect in the hydrolysis of hemicelluloses was observed in the presence of heterogeneous cation-exchange catalysts, Amberlyst 15 and Smopex 101. The kinetic models proposed were based on the reactivities of the non-hydrolysed sugar monomer units and the increase of the rate constant as the reaction progresses and the degree of polymerization decreases. General kinetic models were derived and the kinetic parameters, describing the autocatalytic effect, were determined by non-linear regression analysis. The kinetic model explained very well the overall kinetics, as well as the product distribution in the hydrolysis of hemicelluloses.

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Acknowledgments

This work is part of the activities at the Åbo Akademi University Process Chemistry Centre (PCC), a centre of excellence financed by Åbo Akademi. Financial support from Academy of Finland is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemical Engineering, Process Chemistry Centre, Åbo Akademi, 20500, Turku/Abo, Finland

    Tapio Salmi, Dmitry Murzin, Johan Wärnå, Päivi Mäki-Arvela, Bright Kusema, Bjarne Holmbom & Stefan Willför

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  1. Tapio Salmi
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  2. Dmitry Murzin
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  3. Johan Wärnå
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  4. Päivi Mäki-Arvela
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  5. Bright Kusema
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  6. Bjarne Holmbom
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  7. Stefan Willför
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Correspondence to Tapio Salmi.

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Salmi, T., Murzin, D., Wärnå, J. et al. Hemicellulose Hydrolysis in the Presence of Heterogeneous Catalysts. Top Catal 57, 1470–1475 (2014). https://doi.org/10.1007/s11244-014-0320-6

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  • DOI: https://doi.org/10.1007/s11244-014-0320-6

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