Niobium or tantalum catalysts for the preparation of ethylenimine
US4376732A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1981 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Jul 9, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved catalyst suitable for the dehydration of an alkanolamine in the vapor phase to produce an alkylenimine which catalyst contains an oxide of niobium or tantalum. Optionally an alkaline earth oxide is employed as a promoter. The catalyst is generally used on an inert low surface area support at a concentration of less than 5% of the tantalum or niobium oxide and less than 0.5% of the promoter oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.