High efficient catalytic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid under benign conditions with nitrogen-doped graphene encapsulated Cu nanoparticles
| Autor: | Furong Tao, Zhenjian Liu, Xiao Li, Jiachun Li, Guangqiang Lv, Chaoxin Yang, Wanzhen Zhu, Bohan Lv, Yongxing Yang, Zhenzhou Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Graphene
Oxide Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention Catalysis Reaction rate chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Catalytic oxidation law Yield (chemistry) 2 5-Furandicarboxylic acid 0210 nano-technology Energy (miscellaneous) |
| Zdroj: | Journal of Energy Chemistry. 50:96-105 |
| ISSN: | 2095-4956 |
| Popis: | Selective oxidation of 5-hydroxymethylfurfual (HMF) to 2,5-furandicarboxylic acid (FDCA) as a bioplastics monomer is efficiently promoted by a simple system without noble-metal and base additives. In this work, graphene oxide (GO) was first synthesised by an electrochemical method with flexible graphite paper (FGP) as start carbon material, then, nitrogen-doped graphene (NG) layers encapsulated Cu nanoparticles (NPs) was prepared by one-step thermal treatment of GO supported Cu2+ in flowing NH3 atmosphere. Compared with NG supported Cu NPs prepared by the traditional impregnation method, enhanced catalytic activity was achieved over Cu/NG and an FDCA yield of 95.2% was achieved under mild reaction conditions with tert-butylhydroperoxide (t-BuOOH) as the oxidant. Control experiments with different catalysts and different addition procedure of t-BuOOH showed the yield of HMF and various intermediates during reaction. From the changing of intermediates concentrations and reaction rates, a reaction pathway through HMF-DFF-FFCA-FDCA was proposed. This work gives a more convenient, more green, more economical and effective method in encapsulated metal NPs preparation and high selectivity in HMF oxidation to FDCA under mild conditions. |
| Databáze: | OpenAIRE |
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