Catalyst containing iron, chromium, potassium and lanthanum oxides, its manufacture and use in dehydrogenation reactions
US4535067A · kind A · utility
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4References
13Claims
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Key dates
| Filing date | Dec 14, 1983 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Dec 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C5/3332
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are described catalysts containing, as oxides, iron, chromium and potassium, the latter being optionally partly in form of kaliophyllite Al.sub.2 O.sub.3, 2 SiO.sub.2, K.sub.2 O, as well as lanthanum, in a proportion, calculated in oxide weight, of 1-15% with respect to the final catalyst. The presence in the catalyst of lanthanum oxide, optionally previously combined with cobalt or vanadium, at least in part in the form of a mixed oxide of the perovskite type, confers to the catalyst an improved activity and/or selectivity in dehydrogenation reactions, particularly of ethylbenzene to styrene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.