Nitric oxide abatement with polymeric cobalt(III) chelates
US4921683A · kind A · utility
25Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jun 20, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An NO abatement process wherein an NO-containing fluid is contacted with a polymeric cobalt(II) dioxygen diamine complex. The aqueous solution is recovered, purified by membrane separation to remove low molecular weight reaction products, optionally electrolytically regenerated, and recycled for the NO-containing gas contact. The cobalt(II) is complexed with an amine-containing polymer such as polyethyleneimine free of acidic, e.g. carboxylate, chelating groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.