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 TypeDr GradeEmail
محمد مختارMokhtar, Mohammed ResearcherDoctoratemmoustafa@kau.edu.sa
سليمان ناصر باسهلBasahel, Suliman NaserResearcherDoctoratesbasahel@kau.edu.sa
ياسر محمد العنقريAl Angari, Y MResearcherDoctorateYALANGARI@kau.edu.sa

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