Oxygen-vacancy-rich MnO_(x)supported RuO_(x)for efficient base-free oxidation of 5-hydroxymethylfurfural and 5-methoxymethylfurfural to 2,5-furandicarboxylic acid  

作　　者：Jiali Wu Weizhen Xie Yining Zhang Xixian Ke Tianyuan Li Huayu Fang Yong Sun Xianhai Zeng Lu Lin Xing Tang 

机构地区：[1]Xiamen Key Laboratory of Clean and High-valued Applications for Biomass,Fujian Engineering and Research Center of Clean and High-valued Technologies for Biomass,College of Energy,Xiamen University,Xiamen 361102,Fujian,China [2]Key Lab for Sport Shoes Upper Materials of Fujian Province,Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co.,Ltd.),Putian 351144,Fujian,China

出　　处：《Journal of Energy Chemistry》2024年第8期670-683,I0015,共15页能源化学（英文版）

基　　金：the funding supported by the National Natural Science Foundation of China(22378338,22078275);the Natural Science Foundation of Fujian Province of China(2021H0009);the Fundamental Research Funds for the Central Universities(20720220065)。

摘　　要：2,5-Furandicarboxylic acid(FDCA)is a promising biomass-derived polymeric monomer that serves as an attractive alternative to terephthalic acid derived from fossil resources.However,the green and efficient production of FDCA through the oxidation of 5-hydroxymethylfurfural(HMF)and its derivatives is still rudimentary under base-free conditions.In this work,oxygen-vacancy-rich Mn Oxwas prepared and displayed a strong adsorption and anchoring ability to Ru species that mainly exposed the(210)plane of RuO_(2),bringing about highly dispersed and active interfacial Ru-O-Mn structures.Experimental results and density functional theory calculations confirm that these above features greatly facilitate the adsorption/activation of oxygen and the dehydrogenation-oxidation of HMF/5-methoxymethylfurfural(MMF),which enables an efficient FDCA production under base-free and mild conditions.Notably,a desirable FDCA yield of 86.56%was still obtained from concentrated HMF(10 wt%)under base-free conditions over oxygen-vacancy-rich Mn Oxsupported Ru Ox(1.0 MPaO_(2),120℃,6 h).This work delineates a facile catalyst preparation strategy for HMF/MMF oxidation,and might open a new avenue for the green synthesis of FDCA under base-free conditions.

关 键 词：Base-free oxidation Oxygen-vacancy-rich 5-HYDROXYMETHYLFURFURAL 5-Methoxymethylfurfural 2 5-Furandicarboxylic acid 

分 类 号：O626[理学—有机化学]