CERAMIC COMPOSITION, COMPOSITE MATERIAL, OXYGEN SEPARATION APPARATUS, AND CHEMICAL REACTION APPARATUS

• Main Authors: NAGAI TORU, HIRANO KENJI, KAGANOI SHOICHI, ITO WATARU, KURIMURA HIDEKI, SAKON TADASHI, ITO TAKASHI, SUZUKI YOHEI
• Format: Patent
• Language: English
• Published: 07.10.2004
• Edition: 7
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CABLES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONDUCTORS; ELECTRICITY; INSULATORS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a ceramic composition having excellent oxygen permeability, a composite material of a mixed conductor dense continuous layer and a porous supporting body using the ceramic composition and an oxygen separation apparatus and a chemical reaction apparatus in an industrial selective permeation/separation process for oxygen by an oxide ion mixed conductor and a partial oxidation process of hydrocarbon. SOLUTION: The ceramic composition is the oxide ion mixed conductor substantially having perovskite type crystalline structure and expressed by a composition formula, [(BaxSr1-x)α(Co1-yFey)O3-δ]. There 0.5≤x≤0.65, 0.9≤α≤1.1, 0.075≤y≤0.125 and (δ) is a value fixed to satisfy an electric charge neutralization condition. The composite material contains the porous supporting part and/or the dense continuous layer using the ceramic composition. The oxygen separation apparatus and the chemical reaction apparatus have the ceramic composition and/or the composite material. COPYRIGHT: (C)2005,JPO&NCIPI