Ce-N-O SYSTEM DERIVED FROM DOPING OF CERIUM OXIDE WITH NITROGEN HAVING GENERAL FORMULA CeO2-x-yNx
AssigneeConsejo Superior de Investigaciones Cientificas
InventorsAmparo Fuertes Miquel, Ana Belén Jorge Sobrido
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Abstract
Ce-N-O system derived from doping of cerium oxide with nitrogen with general formula CeO2-x-yNx, with the same structure as undoped CeO2, and which can have 5 similar uses of great technological and strategic relevance, namely as a solid electrolyte and as a catalyser. The presence of cerium 3+ means that luminescent properties may also be present. This compound is prepared by means of a solid-gas reaction using cerium dioxide and ammonia as starting products. The cerium dioxide is placed in a tubular furnace and heated to temperatures over 10 400° C. and ammonium atmosphere.
Claims7
Ce-N-O system resulting from the nitrogen doping of ceria, with the general formula CeO2-x-yNx, characterised in that x and y are such that:
- 0<x<0.5 and 0<y<0.5.
Use of the product with the general formula CeO2-x-yNx as a catalyst.
Use of the product with the general formula CeO2-x-yNx as an ionic conductor.
Use of the product with the general formula CeO2-x-yNx as a luminescent material.
Dependencies are inferred from the claim text.