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http://dx.doi.org/10.9713/kcer.2017.55.1.121

Selective Oxidation of Hydrogen Over Palladium Catalysts in the Presence of Carbon Monoxide: Effect of Supports  

Kim, Eun-Jeong (Department of Chemical Engineering, Chungbuk National University)
Kang, Dong-Chang (Department of Chemical Engineering, Chungbuk National University)
Shin, Chae-Ho (Department of Chemical Engineering, Chungbuk National University)
Publication Information
Korean Chemical Engineering Research / v.55, no.1, 2017 , pp. 121-129 More about this Journal
Abstract
Pd based catalysts were prepared by impregnating palladium precursor using incipient wetness method on $TiO_2$, $Al_2O_3$, $ZrO_2$, and $SiO_2$ and were applied for the selective oxidation of $H_2$ in the presence of CO. Their physicochemical properties were studied by X-ray diffraction (XRD), $N_2$-sorption, temperature programmed desorption of CO (CO-TPD) and (CO+$H_2O$)-TPD, temperature programmed reduction of CO (CO-TPR) and XPS a. The results of CO- and (CO+$H_2O$)-TPD showed the correlation between peak temperature of TPD and catalytic activities for $H_2$ and CO conversion. The $Pd/ZrO_2$ catalyst exhibited the highest conversion of $H_2$. The addition of $H_2O$ vapor promotes the conversion of $H_2$ and CO by inducing easy desorption of CO and $H_2$ in the competitive adsorption of $H_2O$, CO and $H_2$.
Keywords
Selective Oxidation; $H_2$; CO; Palladium;
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Times Cited By KSCI : 2  (Citation Analysis)
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