Departmental Papers (CBE)

Document Type

Journal Article

Date of this Version

July 2003

Comments

Postprint version. Published in Applied Catalysis B: Environmental, Volume 43, Issue 3, 10 July 2003, pages 273-280.
Publisher URL: http://dx.doi.org/10.1016/S0926-3373(02)00323-5

Abstract

The interaction of sulfur with ceria under highly reducing conditions was investigated. The phase boundary between CeO1.83 and Ce2O2S was determined for temperatures between 873 and 1073 K. This data was used to derive an empirical equation for ΔGfº of Ce2O2S in this temperature range. This equation along with thermodynamic data for cerium oxides and sulfides obtained form the literature was used to predict Ce-O-S phase diagrams at 873 and 973 K. These phase diagrams provide insight into the mechanism of the deactivation of ceria-based catalysts by sulfur under reducing conditions.

Keywords

Ceria, Cerium oxysulfide, Sulfur, Adsorption

Figures_1_to_6.pdf (85 kB)
Figures_1_to_6.pdf

Table_1.pdf (109 kB)
Table_1.pdf

Share

COinS
 

Date Posted: 25 January 2006

This document has been peer reviewed.