Formic Acid Gas-Phase Method
The gas-phase method is a relatively newer approach for formic acid production. The process flow is as follows:
(1) Raw Material Preparation:
Methanol and air are prepared, with methanol undergoing purification and dehydration.
(2) Gas-Phase Oxidation Reaction:
Pretreated methanol reacts with oxygen in the presence of a catalyst, producing formaldehyde and water vapor.
(3) Catalytic Liquid-Phase Reaction:
Formaldehyde is further catalytically converted into formic acid in a liquid-phase reaction.
(4) Separation and Purification:
The reaction products are separated and purified using methods such as distillation or crystallization.
Post time: Aug-11-2025