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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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