Catalysts for the gaseous phase oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes
US5300707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Mar 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/35
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Catalyst compositions well adopted for the oxidation of olefins into .alpha.,.beta.-unsaturated aldehydes, e.g., for the oxidation of propylene into acrolein, comprise a particulate support substrate uniformly coated with 15% to 33% by weight of an adherent layer of a catalytically active phase, such support substrate comprising inert and solid spheres having a diameter ranging from 0.5 to 6 mm, such catalytically active phase comprising a catalytically effective amount of bismuth and iron molybdate, dopant amounts of phosphorus and potassium and, optionally, at least one other catalytically active metal or non-metal, and the phosphorus and the potassium each being present in such catalytically active phase in an atomic quantity ranging from 0.005 to 0.06 per 12 atoms of molybdenum, or of molybdenum plus any tungsten therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.