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SiO(2)@MnO(x)@Na(2)WO(4)@SiO(2) core–shell-derived catalyst for oxidative coupling of methane

SiO(2)@MnO(x)@Na(2)WO(4)@SiO(2) 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 Na(2)WO(4). The SiO(2)@MnO(x)@Na(2)WO(4)@SiO(2) core...

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Detalles Bibliográficos
Autores principales: Park, La-Hee, Jo, Ye Rim, Choi, Jae-Wook, Suh, Dong Jin, Song, Kwang Ho, Ha, Jeong-Myeong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057211/
https://www.ncbi.nlm.nih.gov/pubmed/35515149
http://dx.doi.org/10.1039/d0ra05081d
Descripción
Sumario:SiO(2)@MnO(x)@Na(2)WO(4)@SiO(2) 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 Na(2)WO(4). The SiO(2)@MnO(x)@Na(2)WO(4)@SiO(2) 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 Na(2)WO(4) derived from confined core–shell structures.