Metallosilicates, processes for producing the same, nitrogen oxide removal catalyst, process for producing the same, and method for removing nitrogen oxide with the same
US9675935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2010 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Dec 12, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to: a β-type iron silicate which has a fluorine content not more than 400 ppm by weight on a dry basis and in which the crystal grains have a truncated square bipyramidal morphology in an examination with a scanning electron microscope and the whole or part of the iron is contained in the β-type framework structure, and a process for producing the iron silicate; anther β-type iron silicate, and a process for producing the iron silicate; and a nitrogen oxide removal catalyst containing the other β-type iron silicate, a process for producing the catalyst, and a method for nitrogen oxide removal with the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.