Influences of Interactive Effect Between ZrO2 and Nano-SiO2 on the Formation of 1,3-Butadiene from Ethanol and Acetaldehyde
| Autor: | Minhua Zhang, Haoxi Jiang, Meixiang Gao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
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3-Butadiene 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound symbols.namesake Adsorption chemistry Chemical engineering Desorption Pyridine symbols Fourier transform infrared spectroscopy 0210 nano-technology Selectivity Raman spectroscopy |
| Zdroj: | Catalysis Surveys from Asia. 24:115-122 |
| ISSN: | 1574-9266 1571-1013 |
| Popis: | This paper has systematically investigated the structures and properties of the ZrO2, Nano-SiO2 and their composition. The catalysts were prepared by impregnation, characterized by N2 adsorption–desorption, TEM, XRD, Raman, temperature-programmed desorption of NH3 and CO2, FTIR spectroscopy of adsorbed pyridine and CO2, and UV–vis spectra. Compared with dry-mixed samples, these catalysts have larger average pore diameter, enabling ZrO2 to be dispersed more uniformly on the surface of Nano-SiO2. With the Zr–O–Si bonds, ZrO2 could interact intensely with Nano-SiO2. The catalyst prepared shows the best performance, with the selectivity of 93.18% and conversion of 58.52%. The preparation methods have a significant influence on the interaction between ZrO2 and Nano-SiO2, which then affects the acid–basic properties. This paper finds that weak acid–basic sites with moderate-intensity are more suitable for ethanol conversion to BD, with the amount of acid and basic sites as close as possible. |
| Databáze: | OpenAIRE |
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