Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-12-10
1976-10-05
Shine, W. J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252432, 252437, 252470, C07C 4504, B01J 2102, B01J 2384, B01J 2718
Patent
active
039844773
ABSTRACT:
A catalyst for preparing .alpha.,.beta.-unsaturated aldehydes by the gas phase catalytic oxidation of .alpha.,.beta.-unsaturated hydrocarbons, which catalyst contains as indispensable metal components molybdenum, bismuth and at least one transition metal selected from iron, nickel and cobalt. A chelating agent, or a chelate compound of any of the metals comprising the catalyst, is added to all or some of the starting liquid mixtures during the catalyst preparation stage, whereby to increase the catalytic activity of the catalyst so that the desired .alpha.,.beta.-unsaturated aldehyde products such as acrolein and methacrolein can be obtained in high yields. In catalysts of this type, the catalytic activity can be maintained at a high level even if the catalyst does not contain an arsenic component.
REFERENCES:
patent: 3171859 (1965-03-01), Sennewald et al.
patent: 3642930 (1972-02-01), Grasselli et al.
patent: 3778386 (1973-12-01), Takenaka et al.
patent: 3786000 (1974-01-01), Ono et al.
patent: 3804903 (1974-04-01), Hagiwara
Kubo Masayochi
Matsuoka Kazuyuki
Yokoyama Takushi
Daicel, Ltd.
Shine W. J.
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