Authors:	Zirbes, Michael Graßl, Tobias Neuber, Rieke Waldvogel, Siegfried R.
Title:	Peroxodicarbonate as a green oxidizer for the selective degradation of Kraft lignin into vanillin
Online publication date:	3-Aug-2023
Year of first publication:	2023
Language:	english
Abstract:	Lignin, the world's largest resource of renewable aromatics, with annually roughly 50 million tons of accruing technical lignin, mainly Kraft lignin, is highly underdeveloped regarding the production of monoaromatics. We demonstrate the oxidative depolymerization of Kraft lignin at 180 °C to produce vanillin 1 in yields up to 6.2 wt % and 92 % referred to the maximum yield gained from the quantification reaction utilizing nitrobenzene. Using peroxodicarbonate (C2O62−) as “green” oxidizer for the degradation, toxic and/or harmful reagents are prevented. Also, the formed waste can serve as makeup chemical in the pulping process. Na2C2O6 is synthesized in an ex-cell electrolysis of aqueous Na2CO3 at BDD anodes, achieving a yield of Na2C2O6 with 41 %. At least, the oxidation and degradation of Kraft lignin is analysis via UV/Vis and NMR spectroscopy.
DDC:	540 Chemie 540 Chemistry and allied sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 09 Chemie, Pharmazie u. Geowissensch.
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-9311
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY-NC-ND
Information on rights of use:	https://creativecommons.org/licenses/by-nc-nd/4.0/
Journal:	Angewandte Chemie 62 14
Pages or article number:	e202219217
Publisher:	Wiley-VCH
Publisher place:	Weinheim
Issue date:	2023
ISSN:	1521-3773
Publisher DOI:	10.1002/anie.202219217
Relations:	is version of 10.25358/openscience-10178
Appears in collections:	DFG-491381577-H