CARBON MONOXIDE CONVERTER EMISSION BY OSMIUM SUPPORT IN ZIRCONIUM DIOXIDE
The use of zirconia as a catalyst or as a support for metal catalysts has lately become increasingly popular. In recent years, studies of the preparation of doped zirconia producing high thermal stability. Doped zirconia in environmental application is significant to reduce carbon monoxides contribute to several environmental hazards to humans, including respiratory illness, and global warming. One significant drawback to these materials such as platinum and gold is their high cost. Metallic osmium is proposed as a good candidate because it has been shown to be active for CO oxidation and is less expensive than gold and platinum. The osmium electron configuration [Xe] 4f145d66s2 is like platinum electron configuration [Xe] 4f145d96s1.The high orbital d deficiencies causes a stronger interaction with negatively charged molecules. 10% of osmium and platinum were supported on ZrO2 and prepared by solid by solid, Sol-Gel and Incipient Wetness Impregnation techniques.
CARLOS H. DELIZ