Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 539686
Title From batch to continuous : Au-catalysed oxidation of d-galacturonic acid in a packed bed plug flow reactor under alkaline conditions
Author(s) Klis, F. van der; Gootjes, L.; Haveren, J. van; Es, D.S. van; Bitter, J.H.
Source Reaction Chemistry & Engineering 3 (2018)4. - ISSN 2058-9883 - p. 540 - 549.
DOI https://doi.org/10.1039/c8re00047f
Department(s) FBR Sustainable Chemistry & Technology
Biobased Products
VLAG
Biobased Chemistry and Technology
Publication type Refereed Article in a scientific journal
Publication year 2018
Abstract

Currently biomass based conversions are often performed in batch reactors. From an operational and economic point of view the use of a continuous plug flow reactor is preferred. Here we make a back to back comparison of the use of a batch and plug flow reactor for the oxidation of (sodium)-galacturonate to (disodium)-galactarate using a heterogeneous Au-catalyst. We will show that the use of a three phase plug flow reactor results in enhanced O2 mass transfer which resulted in a 10-40 fold increase in productivity (up to 2.2 ton m-3 h-1). However, the product selectivity slightly dropped from >99 mol% in batch (controlled pH) to 94 mol% in packed bed (uncontrolled pH). Both reactors suffer from the low solubility of the reaction product. We will show that this solubility is the most significant challenge for performing this oxidation on industrial scale.

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