Process for production of methacrylic acid by catalytic oxidation of isobutane.

摘要

Methacrylic acid is produced from isobutane in a small facility at a low energy consumption by the use of a production process having the steps of: (A) subjecting isobutane to gas phase oxidation with molecular oxygen in the presence of a solid catalyst to obtain a reaction product gas, (B) separating the reaction product gas into a condensible component and a non-condensible gas component, (C) catalytically oxidizing the carbon monoxide in the non-condensible gas component, with oxygen to convert it into carbon dioxide, (D) removing the carbon dioxide in the non-condensible gas component, and (E) recycling the non-condensible gas component which has passed through the steps (C) and (D), in the step (A), the order of carrying out the step (C) and the step (D) being reversible. c