Porous composite metal oxide and method of producing the same
US7713908B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Feb 8, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing a porous composite metal oxide comprising the steps of: dispersing first metal oxide powder, which is an aggregate of primary particles each with a diameter of not larger than 50 nm, in a dispersion medium by use of microbeads each with a diameter of not larger than 150 μm, thus obtaining first metal oxide particles, which are 1 nm to 50 nm in average particle diameter, and not less than 80% by mass of which are not larger than 75 nm in diameter; dispersing and mixing up, in a dispersion medium, the first metal oxide particles and second metal oxide powder, which is an aggregate of primary particles each with a diameter of not larger than 50 nm, and which is not larger than 200 nm in average particle diameter, thus obtaining a homogeneously-dispersed solution in which the first metal oxide particles and second metal oxide particles are homogeneously dispersed; and drying the homogeneously-dispersed solution, thus obtaining a porous composite metal oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.