Method of preparing a catalyst
US3957692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1974 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Dec 3, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2330/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst suitable, for example, for treatment of cat exhaust emissions is prepared by providing a substrate with a continuous adherent, surface layer of a carrier material for catalytic material by providing on the substrate a layer of carrier material, at least part of which comprises a gel, and firing; and sputtering catalytic material onto the surface layer by bombarding a source of the catalytic material in the neighbourhood of the surface layer with energetic ions, the conditions of atmosphere and selectivity of ions permitted to bombard the catalytic material being such that co-deposition upon the surface layer of unwanted material is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.