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- W2072504805 abstract "Abstract The permeation of the rare earth element Sm to the heteropoly compound K 3 PW 12 O 40 using the rare earth gas phase-heated diffused permeation method at 550 °C is reported for the first time. The studies of infrared spectroscopy (IR) and X-ray diffraction (XRD) indicate that the Keggin structure of the compound is destroyed. The bond of W–O–W is broken and tungsten bronze K 0.3 WO 3 is produced after permeation. Inductively coupled plasma (ICP) and X-ray photoelectron spectroscopy (XPS) were used to determine the percentage composition of the Sm in a permeated sample. The result shows that there is Sm in a permeated sample and Sm interacts with the other component of the compound. Conductivity of compounds before and after permeation was investigated by four-electrode method. It reveals that the conductivity of the permeated sample is 4.18 × 10 −4 S cm −1 , which is 1000 times higher than that of the original sample." @default.
- W2072504805 created "2016-06-24" @default.
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- W2072504805 date "2008-09-01" @default.
- W2072504805 modified "2023-09-23" @default.
- W2072504805 title "Synthesis of K0.3WO3 tungsten bronze with gaseous permeation of K3PW12O40 by Sm and electrical properties of K0.3WO3 tungsten bronze" @default.
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- W2072504805 doi "https://doi.org/10.1016/j.jallcom.2007.09.006" @default.
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