Investigation into 1,3-butadiene and other bulk chemicals' formation from bioethanol over Mg–Al catalysts
| Autor: | Minhua Zhang, Meixiang Gao, Yonghui Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Ethylene
Commodity chemicals General Chemical Engineering Inorganic chemistry 1 3-Butadiene Sorption 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Catalysis chemistry.chemical_compound Adsorption chemistry law Pyridine Calcination 0210 nano-technology |
| Zdroj: | RSC Advances. 7:11929-11937 |
| ISSN: | 2046-2069 |
| Popis: | Mg–Al catalysts were adopted in the direct synthesis of 1,3-butadiene and other bulk chemicals from bioethanol. The influence of MgO content and sample calcination temperature on the catalytic performance was investigated. The optimization of reaction conditions for 1,3-butadiene, ethylene and 1-butanol, including reaction temperatures and the feed rate of ethanol, was also carried out. The catalysts were characterized by X-ray diffraction, nitrogen sorption, SEM, NH3-TPD, CO2-TPD and FTIR of adsorbed pyridine. On the basis of these analysis results and catalytic performance of yielding 1,3-butadiene, both the MgO content and the calcination temperature play a great role on the nature of acid and basic sites, then the proper active sites for producing 1,3-butadiene and other important chemicals such as ethylene and 1-butanol have been elaborated. The balance of moderate acid–basic sites is crucial to production of 1,3-butadiene from ethanol. Ethylene is obtained on strong acid and strong basic sites. 1-Butanol tends to form on the strong basic sites. To further improve the target product selectivity, modifiers adjusting the balance of acidity–basicity need to be involved in the Mg–Al catalysts. |
| Databáze: | OpenAIRE |
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