Evaluation of carbon monoxide oxidation over CeO2/Co3O4 catalysts: Effect of ceria loading
Resource
Catalysis Today 131 (1-4): 520-525
Journal
Catalysis Today
Pages
520-525
Date Issued
2008
Date
2008
Author(s)
Tang, Chih-Wei
Kuo, Ming-Chih
Lin, Chin-Jung
Wang, Chen-Bin
Chien, Shu-Hua
Abstract
Modification of cobaltic oxide (obtained from the reduction of high-valence cobalt oxide and assigned as R230, SBET = 100 m2 g-1) with different loading of ceria was proceeded using the impregnation method (assigned as CeX/R230, X = 4, 12, 20, 35 and 50 wt%). The CeX/R230 catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption at -196 °C, temperature-programmed reduction (TPR) and transmission electron microscopy (TEM). Their catalytic activities towards the CO oxidation were studied in a continuous flow micro-reactor. The results revealed that the optimal modification, i.e., Ce20/R230, can increase the surface area (SBET = 109 m2 g-1) of cobaltic oxide, further weaken the bond strength of Co{single bond}O and lower the activation of CO oxidation among CeX/R230 catalysts due to the combined effect of cobaltic oxide and ceria. The Ce20/R230 catalyst exhibited the best catalytic activity in CO oxidation with T50 (temperature for 50% CO conversion) at 88 °C. © 2007 Elsevier B.V. All rights reserved.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
22.pdf
Size
452.13 KB
Format
Adobe PDF
Checksum
(MD5):9037c83af0ffb9e2fcf0ee7c258b4470