| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing acrolein and/or acrylic acid by a catalytic gas-phase oxidation of propylene and/or propane, where acrolein and/or acrylic acid are manufactured in a high yield stably for a long period of time on an industrial scale even when the operation is temporarily suspended and then resumed. <P>SOLUTION: On suspending an operation of a catalytic gas-phase oxidation process, the feed of a reaction raw material gas is suspended; subsequently an inert gas is fed to the reactor followed by feeding a molecular oxygen-containing gas; then the feed of the molecular oxygen to the reactor is suspended. <P>COPYRIGHT: (C)2009,JPO&INPIT |
