(1) Isopropyl alcohol method
Using isopropanol as a raw material, at room temperature, at a temperature of 180 to 220°C, an aluminum copper catalyst was used to dehydrogenate isopropanol to acetone, and then dehydrated with isopropanol to obtain a product.
(2) Acetone method
Acetone was heated and the vapor passed through a sodium hydroxide catalyst and reacted under normal pressure to give bispropanolone. Dipropanolone was dehydrated in the presence of a phosphoric acid catalyst to obtain isopropenylacetone, and isopropenylacetone was catalytically hydrogenated in the presence of a copper catalyst. The temperature was 170-200°C to obtain a product.