Functional Phenylboronate Polymers for the Recovery of Diols, Sugar Alcohols, and Saccharides from Aqueous Solution

The ongoing transition from fossil to renewable feedstocks demands new efficient processes for an economically viable production of biomass‐derived commodities and fine chemicals. Novel energy‐ and material‐efficient product purification and separation will play a crucial role due to altered product...

Full description

Saved in:
Bibliographic Details
Published in:ChemSusChem 2021-12, Vol.14 (23), p.5207-5215
Main Authors: Schroer, Guido, Toussaint, Valérie, Bachmann, Stephanie, Pöppler, Ann‐Christin, Gierlich, Christian Henning, Delidovich, Irina
Format: Article
Language:English
Subjects:
Adsorption
Alcohols
Aqueous solutions
Binary mixtures
Biomass
Carbohydrates
Complexation
Desorption
Diols
Esterification
Fine chemicals
phenylboronate
Polymers
Polyols
Separation
separation techniques
Substrates
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:The ongoing transition from fossil to renewable feedstocks demands new efficient processes for an economically viable production of biomass‐derived commodities and fine chemicals. Novel energy‐ and material‐efficient product purification and separation will play a crucial role due to altered product and feed composition. The present study comprises the synthesis and tests of cross‐linked p‐vinylphenylboronate polymers for the separation of 18 diols, sugar alcohols, and saccharides, which can be obtained during biomass processing. The separation was based on molecular recognition, that is, esterification of the phenylboronate with vicinal diols. A correlation of the molecular complexation constant, the polymer swelling, and the maximum adsorption capacity was found. The adsorption curves over time were recorded. Preliminary results on competitive adsorption of binary mixtures showed a high potential for the separation of substrates with significantly different complexation constants. Desorption tests implied easier desorption of substrates that only adsorb on the outer polymer shell. Doesn't it swell? The adsorption of diols, sugar alcohols, and saccharides on functional phenylboronate polymers is studied. The adsorption capacity correlates with their complexation constants, and a three‐step model is proposed. Adsorption of substrates on the outer polymer surface induces swelling, which facilitates penetration of the substrates into the particle core. Promising results for separation of binary mixtures are obtained. Diols can be desorbed with 80 %EtOH/20 %H2O solution.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.202002887