NO.sub.x control in catalyst manufacture
US4061597A · kind A · utility
5Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1975 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Dec 4, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/20769
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved process for suppression of oxides of nitrogen arising from heat treatment of catalyst materials containing a source of such oxides is provided which comprises separately introducing the catalyst material and urea into the heating zone and then effecting heat treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.