초록 ▼

Monolithic metal oxide structures, and processes for making such structures, are disclosed. The structures are obtained by heating a metal-containing structure having a plurality of surfaces in close proximity to one another in an oxidative atmosphere at a temperature below the melting point of the

Monolithic metal oxide structures, and processes for making such structures, are disclosed. The structures are obtained by heating a metal-containing structure having a plurality of surfaces in close proximity to one another in an oxidative atmosphere at a temperature below the melting point of the metal while maintaining the close proximity of the metal surfaces. Exemplary structures of the invention include open-celled and closed-cell monolithic metal oxide structures comprising a plurality of adjacent bonded corrugated and/or flat layers, and metal oxide filters obtained from a plurality of metal filaments oxidized in close proximity to one another.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a monolithic metal oxide structure, said method comprising the steps of:providing a structure containing a metal selected from the group consisting of iron, nickel, titanium, and copper, wherein the metal-containing structure contains a plurality of su

[ What is claimed is:] [1.] A method for making a monolithic metal oxide structure, said method comprising the steps of:providing a structure containing a metal selected from the group consisting of iron, nickel, titanium, and copper, wherein the metal-containing structure contains a plurality of surfaces in close proximity to one another, andheating the metal-containing structure in an oxidative atmosphere below the melting point of the metal while maintaining the close proximity of the metal surfaces to uniformly oxidize the structure and directly transform the metal to metal oxide to form a uniform metal oxide structure selected from the group consisting of an iron oxide structure, a nickel oxide structure, a titanium oxide structure and a copper oxide structure, such that the oxidation of the metal in the metal-containing structure is substantially complete and the metal oxide structure is monolithic and retains substantially the same physical shape as the metal-containing structure.