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http://dx.doi.org/10.7316/KHNES.2013.24.5.359

A Study on Characteristics of HI Decomposition Using Pt Catalysts on ZrO2-SiO2 Mixed Oxide  

Ko, Yunki (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Park, Eunjung (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Bae, Kikwang (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Park, Chusik (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Kang, Kyoungsoo (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Cho, Wonchul (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Jeong, Seonguk (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Kim, Changhee (Hydrogen and Fuel Cell Department, Korea Institute of Energy Research)
Kim, Young Ho (Department of Industrial Chemistry, Chungnam National University)
Publication Information
Journal of Hydrogen and New Energy / v.24, no.5, 2013 , pp. 359-366 More about this Journal
Abstract
This work is investigated for the catalytic decomposition of hydrogen iodide (HI). Platinum was used as active material by loading on $ZrO_2-SiO_2$ mixed oxide in HI decomposition reaction. To obtain high and stable conversion of hydrogen iodide in severe condition, it was required to improve catalytic activity. For this reason, a method increasing dispersion of platinum was proposed in this study. In order to get high dispersion of platinum, zirconia was incorporated in silica by sol-gel synthesis. Incorporating zirconia influence increasing platinum dispersion and BET surface area as well as decreasing deactivation of catalysts. It should be able to stably product hydrogen for a long time because of inhibitive deactivation. HI decomposition reaction was carried out under the condition of $450^{\circ}C$ and 1 atm in a fixed bed reactor. Catalysts analysis methods such as $N_2$ adsorption/desorption analysis, X-ray diffraction, X-ray fluorescence, ICP-AES and CO gas chemisorption were used to measurement of their physico-chemical properties.
Keywords
Hydrogen iodide decomposition; Pt catalyst; Metal dispersion; Metal-support interaction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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