Interface synthesis of MnO2 materials with various structures and morphologies and their application in catalytic oxidation of o-xylene
| Autor: | Shengtao Xing, Xiaqing Huang, Zichuan Ma, Xiaoxiao Liu, Yinsu Wu, Li Feng |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Butylamine Scanning electron microscope Mechanical Engineering Inorganic chemistry o-Xylene Condensed Matter Physics Catalysis chemistry.chemical_compound Isobutylamine Catalytic oxidation chemistry Mechanics of Materials General Materials Science Mesoporous material Nuclear chemistry Dichloromethane |
| Zdroj: | Materials Letters. 139:157-160 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2014.10.059 |
| Popis: | MnO 2 materials with various structures and morphologies were prepared using KMnO 4 , and n-, i-, and t-butylamine (the 3 isomers of butylamine, that is, respectively, normal butylamine, isobutylamine and tert-butylamine) as precursors at the dichloromethane/water interface without any template. The relationship between the structure and morphology of the products and the polarity and steric hindrance of butylamine precursor was investigated by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the products synthesized by KMnO 4 /n-, i-,t-butylamine (the corresponding products were denoted as MnO 2 -n, MnO 2 -i and MnO 2 -t, respectively) were quasi-quadrangular α-MnO 2 , a mixture of α-MnO 2 and δ-MnO 2 with irregular structure and nano-spheres δ-MnO 2 , respectively. Nitrogen adsorption analysis showed that MnO 2 -n and MnO 2 -i had a mesoporous structure, while MnO 2 -t exhibited a macroporous structure. Their surface areas were calculated to be about 185, 65, and 15 m 2 g −1 correspondingly. In addition the obtained materials showed different catalytic abilities for the complete catalytic oxidation of a typical volatile organic compound (VOC), o -xylene. |
| Databáze: | OpenAIRE |
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