Document Details

Document Type : Article In Journal 
Document Title :
Effect of iron oxide loading on the phase transformation and physicochemical properties of nanosized mesoporous ZrO2
Effect of iron oxide loading on the phase transformation and physicochemical properties of nanosized mesoporous ZrO2
 
Document Language : English 
Abstract : Mesoporous ZrO2-supported iron oxide materials were prepared with nominal loadings of iron oxide of 5, 10, 15 and 20 wt.% using a modified co-precipitation method. The physicochemical properties of the catalysts were characterized by thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, Raman spectroscopy, high resolution transmission electron microscopy, N-2 adsorption, X-ray photoelectron spectroscopy and infrared spectroscopy methods. A delay in the ZrO2 phase transformation as a result of the incorporation of iron was determined using TG/DSC measurements. XRD, Raman spectroscopy and HRTEM results revealed that an increase of iron oxide loading from 5 to 15 wt.% enhanced the transformation of the monoclinic to tetragonal phase. Unexpectedly, 20 wt.% iron oxide loading was required for complete tetragonal structure stabilization due to the mesoporosity of the ZrO2 support. Iron oxide loadings from 510 15 wt.% showed an increase in the BET-surface area due to the presence of amorphous iron oxide on the surface. XI'S and FTIR results indicated that increasing the iron oxide content to 20 wt.% resulted in stabilization of the tetragonal zirconia phase as a result of surface-to-bulk migration and incorporation of Fe3+ ions in the ZrO2 lattice. 
ISSN : 0025-5408 
Journal Name : MATERIALS RESEARCH BULLETIN 
Volume : 47 
Issue Number : 11 
Publishing Year : 1433 AH
2012 AD 
Article Type : Article 
Added Date : Wednesday, July 12, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
S BasahelBasahel, S Researcher  
T AliAli, T Researcher  
K NarasimharaoNarasimharao, K Researcher  
A (Bagabas(Bagabas, A Researcher  
M MokhtarMokhtar, M Researcher  

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