Journal article Open Access

From batch to continuous: Au-catalysed oxidation of D-galacturonic acid in a packed bed plug flow reactor under alkaline conditions†

van der Klis, F.; Gootjes, L.; van Hageren, J.; van Es, D.S.; Bitter, J.H.

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

Files (1.8 MB)
Name Size
c8re00047f.pdf
md5:9f11be161fd9d058cc269965e45068ed
1.8 MB Download
14
30
views
downloads
Views 14
Downloads 30
Data volume 54.0 MB
Unique views 14
Unique downloads 29

Share

Cite as