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Preparation, characterization and deactivation studies of Co-Mo/gamma-Al2O3 deoxidizing catalyst

Title
Preparation, characterization and deactivation studies of Co-Mo/gamma-Al2O3 deoxidizing catalyst
Type
Article in International Scientific Journal
Year
2004
Authors
Xiangtian Wang
(Author)
Other
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Gousheng Liu
(Author)
Other
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Jianguo Yu
(Author)
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Alírio Rodrigues
(Author)
FEUP
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Journal
Vol. 270 No. 1
Pages: 143-149
ISSN: 0926-860X
Publisher: Elsevier
Indexing
Scientific classification
CORDIS: Technological sciences > Engineering > Chemical engineering
Other information
Authenticus ID: P-000-8YD
Resumo (PT): A deoxidizing catalyst was prepared in this paper. Several characterization techniques (XRD, SEM-EDS, TEM, TPD and TPR) were used to study its structure and properties. A normal pressure micro-reactor was built to study its deoxidizing performance. Results show that when inlet O-2 concentration was 0.1%, space velocity was 3000-12000 h(-1) and operation temperature was above 80 degreesC, the outlet residual O-2 can be as low as 1.0 x 10(-6) (v/v). 300 h continuous operation shows that its deoxidizing activity was stable. Through comparison of the deoxidizing activities for fresh and deactivated catalyst and by simulating the water vapor contents in system, the mechanism of deactivation and reactivation was studied. (C) 2004 Elsevier B.V. All rights reserved.
Abstract (EN): A deoxidizing catalyst was prepared in this paper. Several characterization techniques (XRD, SEM-EDS, TEM, TPD and TPR) were used to study its structure and properties. A normal pressure micro-reactor was built to study its deoxidizing performance. Results show that when inlet O-2 concentration was 0.1%, space velocity was 3000-12000 h(-1) and operation temperature was above 80 degreesC, the outlet residual O-2 can be as low as 1.0 x 10(-6) (v/v). 300 h continuous operation shows that its deoxidizing activity was stable. Through comparison of the deoxidizing activities for fresh and deactivated catalyst and by simulating the water vapor contents in system, the mechanism of deactivation and reactivation was studied.
Language: English
Type (Professor's evaluation): Scientific
Contact: arodrig@fe.up.pt
No. of pages: 7
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