| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of safely and inexpensively producing acetic acid in high productivity while releasing from the restriction of the production equipment of carbon monoxide by bringing a gas mixture of carbon monoxide and methanol obtained by thermally decomposing methyl formate in the presence of an alkali, into contact with a catalyst solution. SOLUTION: This method comprises: obtaining a homogeneous equimolar gas mixture of carbon monoxide and methanol by thermally decomposing methyl formate in the presence of an alkali such as active carbon supporting caustic alkali, aluminum oxide supporting potassium oxide, etc., at 150 to 400 deg.C, preferably 230 to 320 deg.C, directly introducing the obtained gas into an acetic acid synthesizing reactor and bringing it into contact with the catalyst solution (for example a solution comprising rhodium catalyst, a halogen compound, water, if required, an alkali iodide such as lithium iodide, etc., and acetic acid), at 130 to 250 deg.C. |
