Method for producing methacrolein
US5728894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Aug 26, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a method for producing methacrolein, which comprises subjecting isobutylene and/or tert-butanol to gas phase catalytic oxidation with a molecular oxygen-containing gas in the presence of an oxide catalyst composition represented by the formula Mo.sub.12 Bi.sub.a Ce.sub.b K.sub.c A.sub.e B.sub.f O.sub.g, wherein A is Co solely, or a mixture of Co and Mg wherein the atomic ratio of Mg to Co is not more than 0.7, B is Rb, Cs or a mixture thereof, and a, b, c, d, e, f and g are, respectively, the specific atomic ratios of Bi, Ce, K, Fe, A, B and O, relative to 12 atoms of Mo. By the method of the present invention, it is possible to stably produce methacrolein in high yield, using an oxide catalyst composition which has a relatively simple structural composition and therefore can be easily prepared, and which has not only a prolonged catalyst life due to excellent thermal stability and reduction resistance, but also excellent selectivity for methacrolein, wherein the catalyst composition contains Bi, Ce, K and Fe in specific amounts and in a specific relative amount ratio, and does not contain such elements as cause environmental pollution and toxicity problems, and also d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.