Transformation of bioethanol to 1,3-butadiene and other bulk chemicals over the surface of Mg–Al catalysts
| Autor: | Yonghui Li, Meixiang Gao, Minhua Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Ethylene Scanning electron microscope General Chemical Engineering Inorganic chemistry Infrared spectroscopy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Product distribution 0104 chemical sciences Catalysis chemistry.chemical_compound Adsorption chemistry Desorption 0210 nano-technology Selectivity |
| Zdroj: | RSC Advances. 7:26935-26942 |
| ISSN: | 2046-2069 |
| Popis: | The synthesis of bulk chemicals from bioethanol and analysis of the product distribution over Mg–Al catalysts were investigated. Preparation methods of co-precipitation, hydrotalcite-like compounds and impregnation were studied. Catalysts were characterized by X-ray diffraction, nitrogen adsorption–desorption, scanning electron microscopy, transmission electron microscopy, NH3-temperature-programmed desorption (NH3-TPD), CO2-TPD and Fourier-transform infrared spectroscopy of adsorbed pyridines. Different preparation methods had an impact on the surface structure and chemical nature of the catalysts. Ethylene was obtained mainly on sites of strong acids and strong bases. Sites of moderately strong acids and bases were suitable for 1,3-butadiene (BD) formation. To obtain higher BD selectivity, the ratios of MgO and Al2O3 must be examined and modifiers used to adjust the acid–base balance must be adopted in Mg–Al catalysts. |
| Databáze: | OpenAIRE |
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