Synthesis, Characterization, and Rietveld Refinement of Tungsten-Framework-Doped Porous Manganese Oxide (K-OMS-2) Material
| Autor: | Aimee Morey, Xiongfei Shen, Steven L. Suib, Craig A. Calvert, Katana Ngala, Josanlet C. Villegas, Raymond Joesten |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Rietveld refinement General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Chemistry Tungsten Benzaldehyde chemistry.chemical_compound Crystallinity chemistry Electrical resistivity and conductivity Benzyl alcohol Materials Chemistry Sodium tungstate Thermal stability |
| Zdroj: | Chemistry of Materials. 20:6382-6388 |
| ISSN: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm801146m |
| Popis: | Tungsten was successfully doped at 1 and 2 mol % tungsten into the K-OMS-2 framework. Sodium tungstate and tungsten pentabromide were used in a reflux synthesis preparation. The data collected from the characterization methods collectively affirm the substitution of tungsten into the K-OMS-2 framework. Conductivity measurements showed an increase in the resistivity. Conversion of benzyl alcohol to benzaldehyde had a conversion of 25 and 15% for the sodium tungstate and tungsten pentabromide, respectively, while retaining 100% selectivity. Properties such as the resistivity, thermal stability, and crystallinity of the material were altered depending on the amount and type of starting reactants used. |
| Databáze: | OpenAIRE |
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