Process for manufacturing a catalyst containing iron, chromium and potassium oxides and at least one rare earth metal oxide, for use in dehydrogenation reactions
US4533650A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1983 |
| Grant date | Aug 6, 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
A process for manufacturing catalysts containing, as oxides, iron, chromium, potassium, as well as a rare earth metal in a proportion, calculated in oxide weight, of 1-15% with respect to the final catalyst, comprises: PA0 a first step, wherein a product is prepared by a reaction between compounds of rare earth metal(s) and of another metal selected from Fe, Cr, Co, Al or V, and a calcination; and PA0 a second step wherein a mixture is formed between the product resulting from the first step, the other necessary reactants and water; the resulting paste is dried after optional shaping and calcined. A clayish material can be used in the step. The catalysts obtained present an improved efficiency in dehydrogenation reactions, particularly of ethylbenzene to styrene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.