Conversion of cellulose, hemicellulose, and lignin into platform molecules: biotechnological approach

Rødsrud, Gudbrand; Frölander, Anders; Sjöde, Anders; Lersch, Martin

doi:10.1515/energyo.0109.00007

Cited by 3 publications

(3 citation statements)

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“…However, the process suffers from the use of copper, which is associated with cost-intensive purification steps. Thus, the yield of 1 for the industrial process is actually only about 0.3 wt % . Furthermore, the involved oxygen causes additional safety issues.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Electrolysis of Kraft Lignin for Selective Vanillin Formation

Zirbes

Quadri

Breiner

et al. 2020

ACS Sustainable Chem. Eng.

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Lignin represents the largest renewable resource of aromatic moieties on earth and harbors a huge potential as a sustainable feedstock for the synthesis of biobased aromatic fine chemicals. Due to the complex, heterogeneous, and robust chemical structure of the biopolymer, the valorization is associated with significant challenges. Unfortunately, technical lignins, which are a large side stream of the pulp and paper industries, are mainly thermally exploited. In this study, technical Kraft lignin was selectively electrochemically depolymerized to the aroma chemical vanillin. Using electricity, toxic and/or expensive oxidizers could be replaced. The electrodegradation of Kraft lignin was performed at 160 °C in a simple undivided high-temperature electrolysis cell and studied in respect to several reaction parameters. At optimized electrolytic conditions vanillin could be obtained in high selectivity with 67% efficiency compared to the common nitrobenzene oxidation. Additionally, the established high-temperature electrolysis indicated a reliable process and could be easily adapted to a variety of different Kraft lignins.

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Section: Introductionmentioning

confidence: 99%

High-Temperature Electrolysis of Kraft Lignin for Selective Vanillin Formation

Zirbes

Quadri

Breiner

et al. 2020

ACS Sustainable Chem. Eng.

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“…A Norwegian chemical company, Borregaard ASA, has developed a range of lignin-based products that include emulsion stabilizers, binding agents, dispersing agents, crystal growth modiers, and complexing agents. 23 Hexion is also making substantial progress in the utilization of lignin as a partial replacement of phenols for insulating foams, molding compounds, and adhesives. 24 Other major companies, such as Huntsman, China Petroleum & Chemical Corporation, and Rampf Holdings, have also described processes for the utilization of lignin as a partial polyol replacement agent and led patents.…”

Section: Solubilitymentioning

confidence: 99%

Valorization of lignin for advanced material applications: a review

Shorey,

Salaghi,

Fatehi

et al. 2024

RSC Sustain.

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“…Infolgedessen sinkt die Ausbeute an Vanillin 1 beim industriellen Verfahren auf etwa 0,3 Gew%. [23] Außerdem ist der Rohstoff Lignosulfonat, der aus dem Sulfit-Prozess zur Zellstoffherstellung gewonnen wird, derzeit im Vergleich zum Kraft-Prozess, unterrepräsentiert. [2] Im Gegensatz dazu ist die direkte Verwendung von elektrischem Strom als Oxidations-oder Reduktionsmittel inhärent sicher, kostengünstig und vermeidet die Entstehung von Abfall.…”

Section: Introductionunclassified

Peroxodicarbonat als grünes Oxidationsmittel für den selektiven Abbau von Kraft‐Lignin zu Vanillin

Zirbes

Graßl²,

Neuber³

et al. 2023

Angewandte Chemie

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Lignin, die weltweit größte erneuerbare Ressource für Aromaten, mit jährlich etwa 50 Mio. Tonnen anfallendem technischen Lignin, hauptsächlich Kraft-Lignin, ist bezüglich der Synthese von monoaromatischen Verbindungen deutlich unterentwickelt. Wir zeigen die oxidative Depolymerisierung von Kraft-Lignin, bei 180 °C, zur Herstellung von Vanillin 1, in Ausbeuten von bis zu 6,2 Gew% und 92 % bezogen auf die maximale Ausbeute aus der Quantifizierungsreaktion mittels Nitrobenzol. Durch die Verwendung von Peroxodicarbonat (C 2 O 6 2À ) als "grünes" Oxidationsmittel, werden für den Ligninabbau toxische und/oder schädliche Reagenzien vermieden. Außerdem dient der entstehende Abfall als Make-Up-Chemikalie für den Zellstoffprozess. Na 2 C 2 O 6 wurde in einer ex-cell-Elektrolyse von wässriger Na 2 CO 3 -Lösung an BDD-Anoden in einer Ausbeute von 41 % synthetisiert. Weiterhin wurden die Oxidation und der Abbau von Kraft-Lignin mittels UV/ Vis-und NMR-Spektroskopie analysiert.

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Conversion of cellulose, hemicellulose, and lignin into platform molecules: biotechnological approach

Cited by 3 publications

References 0 publications

High-Temperature Electrolysis of Kraft Lignin for Selective Vanillin Formation

High-Temperature Electrolysis of Kraft Lignin for Selective Vanillin Formation

Valorization of lignin for advanced material applications: a review

Peroxodicarbonat als grünes Oxidationsmittel für den selektiven Abbau von Kraft‐Lignin zu Vanillin

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