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http://dx.doi.org/10.7316/khnes.2011.22.1.021

$SO_3$ Decomposition Catalysis in SI Cycle to to Produce Hydrogen  

Kim, Tae-Ho (Korea Institute of Science and Technology Clean Energy Center)
Shin, Chae-Ho (Chungbuk National University, Department of Chemical Engineering)
Joo, Oh-Shim (Korea Institute of Science and Technology Clean Energy Center)
Jung, Kwang-Deog (Korea Institute of Science and Technology Clean Energy Center)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.1, 2011 , pp. 21-28 More about this Journal
Abstract
Fe, Ni and Co, typical active components, were dispersed on $Al_2O_3$ and $TiO_2$ for $SO_3$ decomposition. $SO_3$ decomposition was conducted at the temperature ranges from $750^{\circ}C$ to $950^{\circ}C$ using the prepared catalysts. Alumina based catalysts showed the surface areas higher than Titania based catalysts, which resulted from spinel structure formation of alumina based catalysts. Catalytic $SO_3$ decomposition reaction rates were in the order of Fe>Co${\gg}$Ni. The metal sulfate decomposition temperature were in the order of Ni>Co>Fe from TGA/DTA analysis of metal sulfate. During $SO_3$ decomposition, metal sulfate can form on the catalysts. $SO_2$ and $O_2$ can be produced from the decomposition of metal sulfate. In that point of view, the less is the metal sulfate deomposition temperature, the higher can be the $SO_3$ decomposition activity of the metal component. Therefore, it can be concluded that metal component with the low metal sulfate decomposition temperature is the pre-requisite condition of the catalysts for $SO_3$ decomposition reaction.
Keywords
SI cycle; $SO_3$ decomposition; Metal sulfate decomposition; TGA/DTA of metal sulfate;
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Times Cited By KSCI : 1  (Citation Analysis)
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