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http://dx.doi.org/10.7316/khnes.2011.22.3.340

Characteristics of Redox Agent with Additive in Steam-Iron Process for the High Purity Hydrogen Production  

Jeon, Bup-Ju (Department of Energy Resources, Hanbuk University)
Kim, Sun-Myung (Department of Energy Resources, Hanbuk University)
Park, Ji-Hun (Department of Materials Science & Engineering, Korea University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.3, 2011 , pp. 340-348 More about this Journal
Abstract
Effects of various inorganic-metal oxide (Zr, Zn, Si, Al and Ca as promoters and stabilizers) additive on the reduction rate of iron oxide and the composition of forming hydrogen using the steam-iron cycle operation was investigated. The reduction rate of redox agent with additive was determined from weight change by TGA. The changes of weight loss and reduction rate according to redox agent with various additive affected the hydrogen purity and cycle stability of the process. The cyclic micro reactor showed that hydrogen purity exceeding 95% could be obtained by the water splitting with Si/Fe, Zn/Fe, Zr/Fe redox agents. The redox agents with these elements had an affect on redox cycle stability as a good stabilizer for forming hydrogen by the steam-iron process.
Keywords
Steam-iron process; Redox agent; Reducing gas; additive; Reduction rate;
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Times Cited By KSCI : 3  (Citation Analysis)
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