One-pot synthesis of acidic and basic bifunctional catalysts to promote the conversion of ethanol to 1-butanol
| Autor: | Ming Bo Yue, Shao Qing Lu, Xue Ni Li, Ling Juan Ma, Song Song Peng, Li Na Feng |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Thermal desorption spectroscopy
Butanol Inorganic chemistry One-pot synthesis 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Decomposition 0104 chemical sciences Catalysis law.invention chemistry.chemical_compound chemistry Mechanics of Materials law General Materials Science Calcination 0210 nano-technology Bifunctional Selectivity Nuclear chemistry |
| Zdroj: | Microporous and Mesoporous Materials. 261:44-50 |
| ISSN: | 1387-1811 |
| Popis: | The conversion of ethanol to 1-butanol could allow the effective use of bioethanol as a renewable fuel, but requires a catalyst with both strongly acidic and basic sites. In the present work, a series of basic/acidic bifunctional catalysts was prepared by the calcination of KNO 3 loaded onto granular coconut shell carbon (CSC) at varying temperatures. An extensive characterization using powder X-ray diffraction, scanning electron microscopy, surface area analysis, and NH 3 - and CO 2 -temperature programmed desorption was performed in order to understand structure−activity trends. The CSC structure was found to be well preserved following calcination and the resulting catalysts exhibited both basic and acidic properties. The decomposition of KNO 3 played an important role in the formation of these sites, and it was determined that moderately basic/acidic sites were the most helpful in promoting the aldol coupling of ethanol. These new materials show significant potential for application to the ethanol-to-1-butanol reaction, with the highest-performing specimen (made with 10 wt% KNO 3 and calcined at 500 °C) exhibiting 60% C4 products selectivity at 50% ethanol conversion. |
| Databáze: | OpenAIRE |
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