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Document Details
Document Type
:
Article In Journal
Document Title
:
Nanosized spinel oxide catalysts for CO-oxidation prepared via CoMnMgAl quaternary hydrotalcite route
Nanosized spinel oxide catalysts for CO-oxidation prepared via CoMnMgAl quaternary hydrotalcite route
Subject
:
Chemistry
Document Language
:
English
Abstract
:
Catalytic activity of the Co-Mn-Mg-Al mixed oxide spinel catalysts was examined in CO oxidation by O2. The prepared catalysts were characterized by chemical analysis (ICP), infrared spectroscopy (FTIR), thermal analysis (TG, DTG), powder X-ray diffraction (XRD), surface area measurements, and scanning electron microscopy (SEM).The calcined hydrotalcite-like precursor was composed of spinel-like Co-Mn-Mg-Al mixed oxide as the only XRD crystalline phases. The nanosized spinel oxide catalysts produced by calcination of hydrotalcites showed higher SBET than CoMn-hydrotalcite samples as calcination led to dehydroxylation and carbonate decomposition of anions in interlayer spaces. All the catalysts showed 100% CO conversion at high temperature even those calcined at 800 °C. A catalyst with Co/Mn = 4 and calcined at 500 °C showed 100% CO conversion at 160 °C. Moreover, this catalyst exhibited quite good durability without deactivation in 60 h stability test.
ISSN
:
09258388
Journal Name
:
Journal of Alloys and Compounds
Volume
:
493
Issue Number
:
1-2
Publishing Year
:
1431 AH
2010 AD
Article Type
:
Article
Added Date
:
Monday, April 12, 2010
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد مختار
Mokhtar, Mohammed
Researcher
Doctorate
mmoustafa@kau.edu.sa
سليمان ناصر باسهل
Basahel, Suliman Naser
Researcher
Doctorate
sbasahel@kau.edu.sa
ياسر محمد العنقري
Al Angari, Y M
Researcher
Doctorate
YALANGARI@kau.edu.sa
Files
File Name
Type
Description
26460.pdf
pdf
Abstract
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