Methods for making a catalytic element, the catalytic element made therefrom, and catalyzed particulate filters
US7465690B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Dec 28, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In one embodiment, a method for making a catalytic element comprises forming a first slurry of a promoter oxide precursor and a refractory inorganic oxide and calcining the first slurry to form a supported promoter. The supported promoter and a noble metal solution are combined to form a second slurry that is calcined to form a catalyst composition. The catalyst composition is applied to a substrate and the substrate is calcined to form the catalytic element. In one embodiment, the catalyzed particulate filter comprises a shell disposed around the catalytic element, wherein the shell has an inlet and an outlet, and a retention member disposed between at least a portion of the shell and the catalytic element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.