Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 72: Issue 3
Study of the interactions between carbon monoxide and high specific surface area tin dioxideThermogravimetric analysis and FTIR spectroscopy
Authors:
N. Sergent Ecole Nationale Supérieure des Mines de Saint-Etienne URA-CNRS 2021 Centre SPIN 158 cours Fauriel F-42023 Saint-Etienne Cedex 2 France

Search for other papers by N. Sergent in
Current site
Google Scholar
PubMed Close
,
P. Gélin Laboratoire d'Application de la Chimie ' l'Environnement LACE, UMR-CNRS 5634 43 boulevard du 11 Novembre 1918 F-69622 Villeurbanne Cedex France

Search for other papers by P. Gélin in
Current site
Google Scholar
PubMed Close
,
L. Périer-Camby Ecole Nationale Supérieure des Mines de Saint-Etienne URA-CNRS 2021 Centre SPIN 158 cours Fauriel F-42023 Saint-Etienne Cedex 2 France

Search for other papers by L. Périer-Camby in
Current site
Google Scholar
PubMed Close
,
H. Praliaud Laboratoire d'Application de la Chimie ' l'Environnement LACE, UMR-CNRS 5634 43 boulevard du 11 Novembre 1918 F-69622 Villeurbanne Cedex France

Search for other papers by H. Praliaud in
Current site
Google Scholar
PubMed Close
, and
G. Thomas Ecole Nationale Supérieure des Mines de Saint-Etienne URA-CNRS 2021 Centre SPIN 158 cours Fauriel F-42023 Saint-Etienne Cedex 2 France

Search for other papers by G. Thomas in
Current site
Google Scholar
PubMed Close
Pages:
1117–1126
Online Publication Date:
02 Nov 2004
Publication Date:
01 Jun 2003
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1025084129973
Keywords:
reduction; CO; FTIR spectroscopy; carbonates; TG; high surface area SnO2
Restricted access

Abstract  

The interactions of CO with a high specific surface area tin dioxide was investigated by FTIR spectroscopy and thermogravimetric analysis. FTIR study of CO interactions have shown that CO can adsorb on cus (coordinatively unsaturated sites) Sn4+ cation sites (band at 2201 cm-1). In addition, CO reacts with surface oxygen atoms. This leads to the partial reduction of SnO2 surface and to the formation of ionised oxygen vacancies together with the release of free electrons, which are responsible for the loss of transmission. Formed CO2 can chemisorb on specific surface sites: on basic sites to form carbonates species and on acidic sites (Sn4+-CO2 species) which is in competition with the formation of Sn4+-CO species. TG experiment have shown that the reduction of SnO2 by CO at 400°C occurs in two steps. First, the reduction of SnO2 surface, which is a quick phenomenon. This has allowed to evaluate that more than 12% of reducible surface oxygens can react with CO, essentially because of the presence of a large amount of surface hydroxyl groups. The second step of the reduction of SnO2 would be the progressive reduction of SnO2 bulk by the slow diffusion of oxygen atoms from the bulk to the surface.

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

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

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)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Apr 2024 11 0 0
May 2024 0 0 0
Jun 2024 6 0 0
Jul 2024 19 0 0
Aug 2024 8 0 0
Sep 2024 4 0 0
Oct 2024 0 0 0