Ordered crystalline mesoporous γ-alumina fabricated by vacuum-promoted self-assembly and alkaline hydrothermal method
| Autor: | Mingjiang Xie, Xuefeng Guo, Yongzheng Wang, Zhang Wanju |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Ethylene
Materials science Mineralogy 02 engineering and technology 010402 general chemistry 01 natural sciences Chloride Hydrothermal circulation Catalysis law.invention chemistry.chemical_compound law medicine General Materials Science Crystallization Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Evaporation (deposition) 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials Self-assembly 0210 nano-technology Mesoporous material medicine.drug |
| Zdroj: | Materials Letters. 163:122-125 |
| ISSN: | 0167-577X |
| Popis: | As a commonly adopted approach to mesoporous alumina (MA), evaporation induced self-assembly (EISA) method with precursors containing chloride (e.g. AlCl3) faces a challenge to yield an ordered MA with crystalline pore walls because the chloride ion (Cl−) could affect the assembly and crystallization, resulting from the strong coordination of Cl− to aluminum. Herein, a vacuum-promoted self-assembly and alkaline hydrothermal approach was developed and realized the preparation of ordered crystalline MA from AlCl3. The obtained MA possesses ordered mesoporous structure, crystallized pore walls, narrow pore size distribution, large surface (390 m2/g) and shows a superior catalytic performances towards catalytic dehydration of ethanol to ethylene. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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