Decatungstate-Based Ionic Liquid Highly Active Under Mild Conditions for Upgrading Recalcitrant Humins from Biorefineries

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-03-12 DOI:10.1021/acs.inorgchem.4c05419

Nour Zeaiter, Yohan Martinetto, Laurent Cézard, Mohamed Haouas, Catherine Roch-Marchal, Bruce Pégot, Sébastien Floquet, Betty Cottyn-Boitte

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Abstract

Among all the materials resulting from the recovery of biomass, humin coproducts are produced today on a large scale, particularly in the sugar industry and biorefineries. Humins formation, with typical yields between 10 and 50 wt %, significantly reduces the efficiency and economic viability of the processes. With their complex structure, low solubility, and low reactivity, their valorization constitutes a real challenge. This paper aims to establish the proof of concept for the transformation of recalcitrant humins into high-value-added biobased products using polyoxometalate-based ionic liquids (POM-ILs) under “mild” conditions. In this contribution, the POM-IL (P_6,6,6,14)₄[W₁₀O₃₂] is used in the presence of H₂O₂, at atmospheric pressure and 90 °C for just 1 h. This system proved to be a powerful oxidizing catalyst for the extensive depolymerization of humins and their valorization into platform molecules. Under these conditions, the humin powder underwent an almost complete oxidative dissolution in the 94–99% yield range, leading to the formation of various carboxylic acids of industrial interest and sugars.

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十钨酸盐基离子液体在温和条件下的高活性研究

在生物量回收产生的所有材料中，人类的副产品今天大规模生产，特别是在制糖工业和生物精炼厂。Humins的形成，典型的产量在10%到50%之间，大大降低了该过程的效率和经济可行性。由于其复杂的结构，低溶解度和低反应性，它们的增值构成了一个真正的挑战。本文旨在建立在“温和”条件下使用多金属氧酸盐离子液体（POM-ILs）将顽固性人类素转化为高附加值生物基产品的概念证明。在这项贡献中，POM-IL (p6,6,6,14)4[W10O32]在H2O2存在下，在常压和90°C下使用仅1小时。该体系被证明是一种强大的氧化催化剂，可广泛解聚人类蛋白并将其转化为平台分子。在这些条件下，在94-99%的产率范围内，人类素粉末几乎完全氧化溶解，导致形成各种工业用途的羧酸和糖。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.