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‫جامعة ال م لك ع بدال عزي ز‬
King Abdulaziz University
Document Details
Document Type
Document Title
: Article In Conference
: Nanostructure of Vanadium Pentoxide
Prepared by Sonochemical Treatment
Nanostructure of Vanadium Pentoxide
Prepared by Sonochemical Treatment
Subject
Document
Language
Abstract
: ‫ءك يم يا‬
: English
: Nanostructure of vanadium pentoxide bundles
were synthesized by using high intensity
ultrasound irradiation. The synthesized material
were characterized by XRay Diffraction
(XRD), Scanning Electron Microscopy (SEM),
Transition Electron Microscopy (TEM) and
Temperature Programmed Reduction (TPR).
Catalytic behaviour of the material over nbutane oxidation were studied. XRD patterns of
all the nanostructures vanadium pentoxide
showed the characteristic reflections of
vanadium pentoxide, V2O5. The morphologies
as shown in SEM (Figure 1) and TEM (Figure
2) of the nanostructure vanadium pentoxide are
dependence on the duration of the ultrasound
irradiation. Higher ultrasound irradiation time
produce material with uniform, well defined
shapes and surface structures with smaller
diameter of nanorod vanadium pentoxide
bundles. H2-TPR profiles showed that higher
amount of oxygen species are removed from
the nanostructured V2O5 compared to the bulk.
Furthermore, the nanostructure vanadium
pentoxide bundles which were synthesized with
90, 120 and 180 min of ultrasound irradiation
time showed an additional peak occurred at
lower temperature (~850 K) as shown in TPR
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profiles suggest the presence of some highly
active oxygen species. Temperature
Programmed Reaction (TPRn) in n- Butane/He
over these materials shows that the
nanostructure V2O5 with the presence of
highly active oxygen species gave markedly
higher activity than the bulk material
: Tenth International Symposium on
Heterogeneous Catalysis
: From : 22/8/1429 AH - To : 26/8/1429 AH
From : 23/8/2008 AD - To : 27/8/2008 AD
: 1429 AH
2008 AD
: Article
: Sunday, February 15, 2009
Researchers
Researcher Name Researcher Name Researcher
Dr
Email
(Arabic)
(English)
Type
Grade
Y.H. Taufiq-Yap Y.H. Taufiq-Yap
Researcher Doctorate
Y.C. Wong
Y.C. Wong
Researcher Doctorate
Files
File Name
18313.pdf
Type
pdf
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