NDLI: NO oxidation over supported cobalt oxide catalysts

Content Provider	Springer Nature Link
Author	Kim, Dae Su Kim, Yun Ha Yie, Jae Eui Park, Eun Duck
Copyright Year	2009
Abstract	NO oxidation was conducted over cobalt oxides supported on various supports such as SiO$_{2}$, ZrO$_{2}$, TiO$_{2}$, and CeO$_{2}$. The N$_{2}$ physisorption, an inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), NO chemisorptions, the temperature-programmed desorption (TPD) with a mass spectroscopy after NO or CO chemisorptions were conducted to characterize catalysts. Among tested catalysts, Co$_{3}$O$_{4}$ supported on ceria with a high surface area showed the highest catalytic activity. This catalyst showed superior catalytic activity to unsupported Co$_{3}$O$_{4}$ with a high surface area and 1 wt% Pt/γ-Al$_{2}$O$_{3}$. For ceria-supported Co$_{3}$O$_{4}$, the catalytic activity, the NO uptake at 298 K and the dispersion of Co$_{3}$O$_{4}$ increased with increasing the surface area of CeO$_{2}$. The active participation of the lattice oxygen in NO oxidation could not be observed. On the other hand, the lattice oxygen participated in the CO oxidation over the same catalyst. The deactivation was observed over Co$_{3}$O$_{4}$/CeO$_{2}$ and 1 wt% Pt/γ-Al$_{2}$O$_{3}$ in the presence of SO$_{2}$ in a feed. 1 wt% Pt/γ-Al$_{2}$O$_{3}$ was deactivated by SO$_{2}$ more rapidly compared with Co$_{3}$O$_{4}$/CeO$_{2}$.
Starting Page	49
Ending Page	54
Page Count	6
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	27
Issue Number	1
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2010-02-16
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	NO Oxidation Co$_{3}$O$_{4}$ Supports CeO$_{2}$ TPD Biotechnology Materials Science Catalysis Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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