Solid mixed oxide composition containing molybdenum, cobalt and bismuth, which is suitable for the manufacture of acrolein from propylene by a redox reaction
US6251821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Dec 14, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A mixed oxide solid composition of the formulas (I): PA1 (a) Mo.sub.12 Co.sub.4.7 Bi.sub.1 Ni.sub.2.6 Fe.sub.3.7 W.sub.0.5 Sn.sub.0.5 Si.sub.1 K.sub.0.08 O.sub.x ; PA1 (b) Mo.sub.12 Co.sub.3.5 Bi.sub.1.1 Fe.sub.0.8 W.sub.0.5 Si.sub.1.4 K.sub.0.05 O.sub.x ; and PA1 (c) Mo.sub.12 Co.sub.3.8 Bi.sub.1.2 Fe.sub.0.9 W.sub.1.1 Si.sub.1.5 K.sub.0.05 O.sub.x, wherein x is the quantity of oxygen bonded to the other elements and depends on their oxidation states, is suitable for the manufacture of acrolein by oxidizing propylene. The solid composition reacts with propylene according to the redox reaction (1): EQU solid.sub.oxidized +propylene.fwdarw.solid.sub.reduced +acrolein (1) To manufacture acrolein, gaseous propylene is passed over the solid composition. Redox reaction (1) is conducted at a temperature of 200 to 600.degree. C., at a pressure of 1.01.times.10.sup.4 to 1.01 to 10.sup.6 Pa (0.1 to 10 atmospheres) and with a residence time of 0.01 second to 90 seconds, in the absence of molecular oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.