The excellent catalyst support of Al2O3 fibers with needle-like mullite structure and HMF oxidation into FDCA over CuO/Al2O3 fibers
| Autor: | Song Kaihe, Zhenhuan Li, Bowen Cheng, Kunmei Su, Weimin Kang, Ren Huiru, Maliang Zhang, Xing-hai Zhou |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Process Chemistry and Technology Catalyst support Mullite 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis law.invention Chemical engineering law visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Calcination Ceramic Fiber 0210 nano-technology Porosity Spinning |
| Zdroj: | Ceramics International. 45:2330-2337 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2018.10.148 |
| Popis: | Al2O3 fibers, especially with unique morphology and structure, are a fascinating class of ceramics that have been widely used as catalyst supports. In this work, smooth, porous and needle-like Al2O3 fibers are successfully prepared by electro-blowing spinning (EBS) method. Effects of calcination temperature, calcination rate and pore forming agent content (Polytetrafluoroethylene, PTFE) on the morphology and structure of Al2O3 fibers are systematically studied. Most importantly, Al2O3 fibers with different morphologies are particular suitable to be used as CuO supports for selective oxidation of 5-hydroxymethyl-2-furfural (HMF) to 2,5-furandicarboxylic acid (FDCA). Benefiting from the unique structure, FDCA synthesis over the needle-like CuO/Al2O3 fibers achieves 98.6% yield, which is much higher than the yields over smooth and porous CuO/Al2O3 fibers. Moreover, the fiber catalysts could be easily recovered and reused without the loss of its activity. It is anticipated that Al2O3 fibers with needle-like mullite will shed some light on the development of profiled ceramic fibers for various applications. |
| Databáze: | OpenAIRE |
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