Magnetic solid acid Fe3O4@SiO2-SO3H for cellulose hydrolysis
| Autor: | Linghui Qiao, Zhen Liu, Shiying Zhang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_compound
Materials science X-ray photoelectron spectroscopy chemistry Renewable Energy Sustainability and the Environment Scanning electron microscope Transmission electron microscopy Infrared spectroscopy Fourier transform infrared spectroscopy Cellulose Hydrolysate Catalysis Nuclear chemistry |
| Zdroj: | Biomass Conversion and Biorefinery. |
| ISSN: | 2190-6823 2190-6815 |
| DOI: | 10.1007/s13399-021-02091-8 |
| Popis: | The micro/nano-Fe3O4 prepared by solvothermal method was embedded in silica to afford a core–shell structure of Fe3O4@SiO2. The magnetic solid acid, Fe3O4@SiO2-SO3H, was obtained by the sulfonation of the core–shell composite, and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDS). Its acid content and application performance for cellulose hydrolysis were further investigated. The saturation magnetization and maximum acid content of the solid acid are found to be 9.81 emu·g−1 and 3.36 mmol·g−1, respectively. The solid acid catalyzed cellulose hydrolysis at 150 ℃ with the solid acid dose of 2.5 g per gram cellulose produces glucose in the yield of 59.91% in 7 h. The solid acid is successfully recycled from the hydrolysate with a magnet, and the magnetization and catalysis performance for cellulose hydrolysis show no significant changes in 5 cycles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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