Catalyst preparation method
US4163735A · kind A · utility
1Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1977 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Jul 25, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/72
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Copper-magnesium silicate-carbonate catalysts of improved activity and catalyst life for use in continuous hydration of acrylonitrile to acrylamide are prepared by a novel method in which magnesium and copper are precipitated separately in a common mother liquor and the precipitate is separated and dried at 170.degree.-200.degree. C. before pelleting. Pellets made from the dried powder, when reduced and calcined for use in the hydration reaction have better combination of catalytic properties than prior art catalysts of the type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.