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http://dx.doi.org/10.9713/kcer.2011.49.2.168

Low-temperature Oxidation of Odor Compounds over La-based Perovskite Catalyst  

Bang, Yong-Ju (School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University)
Seo, Jeong-Gil (School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University)
Lee, Gi-Chun (Woongjin Coway R & D center, Seoul National University Research Center)
Park, Chan-Jung (Woongjin Coway R & D center, Seoul National University Research Center)
Kim, Hyung-Tae (Woongjin Coway R & D center, Seoul National University Research Center)
Song, In-Kyu (School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University)
Publication Information
Korean Chemical Engineering Research / v.49, no.2, 2011 , pp. 168-174 More about this Journal
Abstract
Various La-based perovskite catalysts were prepared by a Pechini method, and they were applied to the low-temperature oxidation of odor compounds exhausted from waste food treatment process for effective deodorization. Quantitative and qualitative analyses of exhausted gas were conducted to measure the amount of major odor compounds with respect to operation time. A standard odor sample composed of major odor compounds was then prepared for use as a feed for oxidation reaction system. Various transition metal(M)-substituted La-based perovskite catalysts ($LaMO_{3}$: M=Cr, Mn, Fe, Co, and Ni) were prepared and applied to the oxidation of odor compounds in order to investigate the $LaNiO_3$ catalyst showed the best catalytic performance. Pt-substituted perovskite catalysts ($LaNi_{1-x}Pt_{x}O_{3}$: x=0, 0.03, 0.1, and 0.3) were then prepared for enhancing the catalytic performance. It was found that $LaNi_{0.9}Pt_{0.1}O_{3}$ catalyst served as the most efficient catalyst. Supported perovskite catalysts ($XLaNi_{0.9}Pt_{0.1}O_{3}/Al_{2}O_{3}$: X=perovskite content(wt%), 0, 10, 20, 30, 40, 50, and 100) were finally applied for the purpose of maximizing the catalytic performance of perovskite catalyst in the low-temperature oxidation reaction. Catalytic performance of $XLaNi_{0.9}Pt_{0.1}O_{3}/Al_{2}O_{3}$ catalysts showed a volcano-shaped curve with respect to perovskite content. Among the catalysts tested, $20LaNi_{0.9}Pt_{0.1}O_{3}$/$Al_{2}O_{3}$ catalyst exhibited the highest conversion of odor compounds of 88.7% at $180^{\circ}C$.
Keywords
Perovskite; Low-temperature Oxidation; Waste Food Treatment Process; Odor Compounds; Deodorization;
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Times Cited By KSCI : 3  (Citation Analysis)
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