SiO2@MnOx@Na2WO4@SiO2 core–shell-derived catalyst for oxidative coupling of methane

SiO2@MnOx@Na2WO4@SiO2 core–shell catalysts were prepared and their fabrication was confirmed using transmission electron microscopy. The formation of Mn-based nanosheets on the silica spheres is important for the deposition of nanoscopic Na2WO4. The SiO2@MnOx@Na2WO4@SiO2 core–shell catalysts were us...

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Bibliographic Details
Published in:RSC advances 2020-10, Vol.10 (62), p.37749-37756
Main Authors: La-Hee, Park, Ye, Rim Jo, Choi, Jae-Wook, Dong Jin Suh, Kwang Ho Song, Jeong-Myeong Ha
Format: Article
Language:English
Subjects:
Alkenes
Catalysts
Chemistry
Core-shell structure
Coupling
High temperature
Methane
Paraffins
Silicon dioxide
Sodium tungstate
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Summary:SiO2@MnOx@Na2WO4@SiO2 core–shell catalysts were prepared and their fabrication was confirmed using transmission electron microscopy. The formation of Mn-based nanosheets on the silica spheres is important for the deposition of nanoscopic Na2WO4. The SiO2@MnOx@Na2WO4@SiO2 core–shell catalysts were used for the oxidative coupling of methane at a temperature of 700–800 °C at which the nanostructures were completely destroyed. Although the core–shell structures did not survive the high-temperature oxidative coupling of methane, the selective production of olefins and paraffins can be attributed to highly dispersed Na2WO4 derived from confined core–shell structures.
ISSN:2046-2069
DOI:10.1039/d0ra05081d