Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1997-05-06
1999-04-06
Kumar, Shailendra
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562535, 568479, 502212, 502242, 502304, 502527, C07C 5116
Patent
active
058921087
ABSTRACT:
A method for packing of catalyst, which comprises mixing, into a shaped catalyst containing at least molybdenum and iron, used in the gas-phase catalytic oxidation of propylene, isobutylene, tert-butyl alcohol or methyl tert-butyl ether with molecular oxygen to synthesize an unsaturated aldehyde and an unsaturated carboxylic acid both corresponding to the raw material used, metal-made Raschig rings as auxiliary packing material having a bulk volume of 0.3-3.5 times that of the shaped catalyst and a packing density of 0.5-1.5 kg/l, and packing the resulting mixture into a fixed bed type reactor; and a process for producing an unsaturated aldehyde and an unsaturated carboxylic acid, which comprises subjecting propylene, isobutylene, tert-butyl alcohol or methyl tert-butyl ether to gas-phase catalytic oxidation using molecular oxygen, in a fixed bed type reactor wherein a catalyst is packed by the above method.
REFERENCES:
patent: 3484384 (1969-12-01), Kerr et al.
patent: 4438217 (1984-03-01), Takata et al.
Kuroda Toru
Oh-Kita Motomu
Shiotani Tohru
Sugiyama Miezi
Kumar Shailendra
Mitsubishi Rayon Co. Ltd.
Padmanabhan Sreeni
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