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http://dx.doi.org/10.14478/ace.2017.1004

Effect of Pt/Al2O3-based Catalysts on Removal Efficiency of Hydrogen  

Won, Jong Min (Department of Environmental Energy Engineering, Kyonggi University)
Hong, Sung Chang (Department of Environmental Energy Engineering, Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.28, no.2, 2017 , pp. 221-229 More about this Journal
Abstract
In this study, a wet impregnation method was applied to catalysts based on the active metal Pt in order to confirm the oxidation characteristics of various commercial alumina supports at room temperature. The catalysts were characterized using XPS, CO-chemisorption, and BET. Various $Pt/Al_2O_3$ catalysts controlled the oxygen species of Pt by the electronegativity of electrons and charges when the catalyst was prepared according to the heat treatment conditions. The reason that the dispersion degree decreases with increasing Pt loading seems to be attributed to HT (Huttig Temperature) of Pt. In addition, the minimum hydrogen concentration that can be controlled at room temperature can control hydrogen from metallic Pt up to 1.0 vol% at over 70.09% in the catalyst.
Keywords
hydrogen; oxidation; room temperature; metallic Pt; metal dispersion;
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