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Low Temperature Oxidation of Carbon Monoxide over Mesoporous Au-Fe2O3 Catalysts
Joint Authors
Alshehri, Abdulmohsen Ali
Narasimharao, Katabathini
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-10
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Low temperature active and stable mesoporous Au (0.1, 0.2, 0.5, and 1.0 wt.%) supported α-Fe2O3 catalysts were prepared via deposition-precipitation method.
The H2-pretreated catalyst with 0.5 wt.% Au loading offered CO conversion of 100% at 323 K and showed continual activity for at least 120 h.
X-ray diffraction and transmission electron microscopy analysis indicate that Au species were highly dispersed as nanoparticles (20–40 nm) on the surface of α-Fe2O3 support even after thermal treatment at 773 K.
The N2-physisorption measurements show that the synthesized α-Fe2O3 support and Au-Fe2O3 nanocomposites possessed mesopores with high specific surface area of about 158 m2 g−1.
X-ray photoelectron spectroscopy and H2-TPR results reveal that the Au species exist in metallic and partially oxidized state due to strong interaction with the support.
Effective Au-Fe2O3 interaction resulted in a high activity for Au nanoparticles, locally generated by the thermal treatment at 773 K in air.
American Psychological Association (APA)
Alshehri, Abdulmohsen Ali& Narasimharao, Katabathini. 2017. Low Temperature Oxidation of Carbon Monoxide over Mesoporous Au-Fe2O3 Catalysts. Journal of Nanomaterials،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1183740
Modern Language Association (MLA)
Alshehri, Abdulmohsen Ali& Narasimharao, Katabathini. Low Temperature Oxidation of Carbon Monoxide over Mesoporous Au-Fe2O3 Catalysts. Journal of Nanomaterials No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1183740
American Medical Association (AMA)
Alshehri, Abdulmohsen Ali& Narasimharao, Katabathini. Low Temperature Oxidation of Carbon Monoxide over Mesoporous Au-Fe2O3 Catalysts. Journal of Nanomaterials. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1183740
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1183740