Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 41: Issue 5
Hydrogen temperature programmed reduction based on water analysis
Application to vanadium pentoxide
Authors:
D. Ballivet-Tkatchenko UPR 8241 liée par conventions à l’Université Paul Sabatier et á l’institut National Polytechnique de Toulouse Laboratoire de Chmie de Coordination du CNRS 205 Route de Narbonne 31077 Toulouse Cedex France

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G. Delahay UPR 8241 liée par conventions à l’Université Paul Sabatier et á l’institut National Polytechnique de Toulouse Laboratoire de Chmie de Coordination du CNRS 205 Route de Narbonne 31077 Toulouse Cedex France

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Pages:
1141–1151
Online Publication Date:
09 Jan 2007
Publication Date:
01 May 1994
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02547203
Keywords:
heterogeneous catalysis; temperature programmed reduction; V2O5; water analysis
Restricted access

Abstract  

Profiles of temperature programmed reduction (TPR) of V2O5 under H2 have been studied through water analysis. This new approach enhances the sensitivity of the method. The influence of experimental parameters on the temperature corresponding to the maximum reduction rate,Tm, has been studied. The hydrogen concentration and heating rate are the two major factors that influenceTm. In our method, the amount of solid and the flow rate are also important factors in monitoring of profile distortions attributed to water condensation at the outlet of the reactor. An approach of the mechanism of reduction of V2O5 has been carried out. The best kinetic model which describes the reduction rocess is the Avrami-Erofeev tridimensional nucleation model.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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