Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1980-03-03
1981-11-03
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568480, C07C 4722
Patent
active
042987636
ABSTRACT:
Acrolein and methacrolein are prepared advantageously by oxidizing propylene or isobutylene, respectively, with an oxygen-containing gas mixture under conventional conditions over a supported catalyst possessing a firmly adhering coating, from 150 to 1,500 .mu.m thick, which contains calcined catalytic material based on molybdenum oxide and has a carrier core with a surface area of less than 15 m.sup.2 /g and a diameter of more than 100 .mu.m, if a coated catalyst is used which has been prepared by applying calcined catalytic material having a particle size of from 0.1 to 300 .mu.m, in an amount of from 1 to 40 g/min/liter of carrier and water in a weight ratio of catalytic material to water of from 1:1 to 8:1, continuously and separately from one another, each at a constant speed, at below 100.degree. C. to vigorously agitated carrier particles which may or may not have been premoistened with water in an amount of up to 95% of the water absorbency of the particles, the prepartion of the catalyst being carried out in such a way that the water content of the coating which forms is less than the maximum degree of saturation of the catalytic material.
REFERENCES:
patent: 4077912 (1978-03-01), Dolhj
patent: 4186152 (1980-01-01), Yamamoto et al.
patent: 4195187 (1980-03-01), Vanderspart
Beitelschmidt Walter
Duembgen Gerd
Engelbach Heinz
Krabetz Richard
Willersinn Carl-Heinz
BASF - Aktiengesellschaft
Lone Werren B.
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