Selective Oxidation of Furfural to 2(5H)-Furanone and Maleic Acid over CuMoO4,ACS Sustainable Chemistry & Engineering

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Selective Oxidation of Furfural to 2(5H)-Furanone and Maleic Acid over CuMoO4
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-09-21 , DOI: 10.1021/acssuschemeng.1c03420
Xin Yu ₁ , Huai Liu ₁ , Qian Wang ₁ , Wenlong Jia ₁ , Huiqiang Wang ₁ , Weile Li ₁ , Jiawen Zheng ₁ , Yong Sun _{1,

2,

3} , Xing Tang _{1,

2} , Xianhai Zeng _{1,

2} , Feng Xu ₄ , Lu Lin _{1,

2}

Affiliation

Green synthesis of high-value furanone derivatives and C₄ organic acids from renewable biomass is a promising yet challenging route. Herein, we report a suitable heterogeneous and recoverable bimetallic CuMoO₄ catalyst for the selective oxidation of furfural to 2(5H)-furanone and maleic acid (MAc). The resulting CuMoO₄ manifested excellent catalytic performance with a high furfural conversion of 99%, giving a 2(5H)-furanone yield of up to 66% or a MAc yield of over 74% by regulating the reaction conditions. The synergy of Cu and Mo species in CuMoO₄ boosted the outstanding catalytic efficiency through the Mo⁶⁺–Mo⁵⁺–Mo⁴⁺ redox facilitated by the redox of Cu⁺/Cu²⁺. More importantly, the Mo species in CuMoO₄ played a key role in activating the aldehyde group in furfural to facilitate hydrogen abstraction from the aldehyde group by CuMoO₄ and the active SO₄^•– radical, which was from peroxymonosulfate (PMS). This work presents a sustainable process for the fabrication of bio-based polymer precursors and offers a bifunctional catalysis strategy for efficient oxidation.

中文翻译：

CuMoO4上糠醛选择性氧化为2(5H)-呋喃酮和马来酸

从可再生生物质中绿色合成高价值呋喃酮衍生物和 C ₄有机酸是一条有前途但具有挑战性的路线。在此，我们报告了一种合适的多相可回收双金属 CuMoO ₄催化剂，用于将糠醛选择性氧化为 2(5H)-呋喃酮和马来酸 (MAc)。所得CuMoO ₄表现出优异的催化性能，糠醛转化率高达99%，通过调节反应条件，2(5H)-呋喃酮产率高达66%，MAc产率超过74%。CuMoO ₄中Cu和Mo物种的协同作用通过Cu氧化还原促进的Mo ⁶⁺ –Mo ⁵⁺ –Mo ⁴⁺氧化还原提高了出色的催化效率⁺ /Cu ²⁺。更重要的是，CuMoO _{4 中}的Mo物质在激活糠醛中的醛基以促进CuMoO ₄和来自过硫酸盐(PMS)的活性SO ₄^•–自由基从醛基中夺取氢方面发挥了关键作用。这项工作提出了一种制造生物基聚合物前体的可持续工艺，并为有效氧化提供了一种双功能催化策略。

更新日期：2021-10-04

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