| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing monocarboxylic acid anhydride which is used suitably as a middle raw material of surfactant or the like.SOLUTION: A 10-22C monocarboxylic acid is changed into an anhydride in the presence of one kind or more acid catalysts selected from a group consisting of sulfuric acid, phosphoric acid, phosphotungstic acid, p-toluenesulfonic acid, zeolite, clay mineral, alumina and sulfated zirconia at a reaction temperature of 150 to 300°C. |
