Continuous heterogeneously catalyzed gas-phase oxidation of prop

Details Continuous heterogeneously catalyzed gas-phase oxidation of prop Continuous heterogeneously catalyzed gas-phase oxidation of prop

1996-03-06

1997-11-04

McKane, Joseph

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

568475, 568476, C07C 4534, C07C 5123

Patent

active

056841884

ABSTRACT:
In a process for the continuous heterogeneously catalyzed gas-phase oxidation of propylene to acrolein, acrylic acid or a mixture thereof in an oxidation reactor whose feed gas mixture comprises, apart from propylene and molecular oxygen as oxidant, only at least one diluent gas which is essentially inert under the conditions of the heterogeneously catalyzed gas-phase oxidation and where, in continuous operation, at least a part of the essentially inert diluent gases present in the product gas mixture is separated off therefrom and is reused as a constituent of the feed gas mixture to the oxidation reactor, the essentially inert diluent gas mixture comprises more than 85% by volume of at least one saturated hydrocarbon having from 1 to 5 carbon atoms.

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