Unveiling the Mechanism of Reductive Catalytic Fractionation viaOnline High-Resolution Mass Spectrometry: Insights into LigninValorization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F25%3A43931481" target="_blank" >RIV/60461373:22320/25:43931481 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/full/10.1021/acssuschemeng.5c01160" target="_blank" >https://pubs.acs.org/doi/full/10.1021/acssuschemeng.5c01160</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acssuschemeng.5c01160" target="_blank" >10.1021/acssuschemeng.5c01160</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unveiling the Mechanism of Reductive Catalytic Fractionation viaOnline High-Resolution Mass Spectrometry: Insights into LigninValorization

Popis výsledku v původním jazyce

In the quest for sustainable energy and environmental preservation, reductive catalytic fractionation (RCF) of lignocellulosic biomass has emerged as a powerful approach to valorize lignin. However, the precise mechanism driving the RCF process remains elusive due to analytical challenges. This study unlocks the mechanism by investigating the Pd/C-catalyzed RCF of birch wood using online high-resolution mass spectrometry (HRMS) for the first molecular-level insights. Real-time evolutions of various monomers, dimers, and oligomers bridged the gap between large lignin fragments and small phenolic products, revealing the stepwise nature of RCF. The process starts with lignin extraction into the liquid phase from the middle lamella to the secondary wall of the cell wall, followed by rapid catalytic depolymerization of the extracted lignin fragments to yield phenolic monomers and dimers. Intriguingly, the evolution of sugar-derived compounds highlights the holocellulose degradation with prolonged reaction times, posing challenges to lignin-first strategies. These findings underscore the importance of fine-tuning RCF conditions to enhance conversion efficiency and minimize side reactions. Moreover, this work highlights the application of advanced HRMS techniques for gaining mechanistic and kinetic insights into liquid-phase reactions, paving the way for more efficient biomass valorization technologies.

Název v anglickém jazyce

Unveiling the Mechanism of Reductive Catalytic Fractionation viaOnline High-Resolution Mass Spectrometry: Insights into LigninValorization

Popis výsledku anglicky

In the quest for sustainable energy and environmental preservation, reductive catalytic fractionation (RCF) of lignocellulosic biomass has emerged as a powerful approach to valorize lignin. However, the precise mechanism driving the RCF process remains elusive due to analytical challenges. This study unlocks the mechanism by investigating the Pd/C-catalyzed RCF of birch wood using online high-resolution mass spectrometry (HRMS) for the first molecular-level insights. Real-time evolutions of various monomers, dimers, and oligomers bridged the gap between large lignin fragments and small phenolic products, revealing the stepwise nature of RCF. The process starts with lignin extraction into the liquid phase from the middle lamella to the secondary wall of the cell wall, followed by rapid catalytic depolymerization of the extracted lignin fragments to yield phenolic monomers and dimers. Intriguingly, the evolution of sugar-derived compounds highlights the holocellulose degradation with prolonged reaction times, posing challenges to lignin-first strategies. These findings underscore the importance of fine-tuning RCF conditions to enhance conversion efficiency and minimize side reactions. Moreover, this work highlights the application of advanced HRMS techniques for gaining mechanistic and kinetic insights into liquid-phase reactions, paving the way for more efficient biomass valorization technologies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Sustainable Chemistry &amp; Engineering

ISSN

2168-0485

e-ISSN

2168-0485

Svazek periodika

13

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

5434-5443

Kód UT WoS článku

001456016400001

EID výsledku v databázi Scopus

2-s2.0-105003047447