关键词: 丙酮, 3-氯丙烯, 过氧化氢, TS-1分子筛, 环氧氯丙烷

Abstract: In the presence of the catalyst TS-1, allyl chloride can directly react with hydrogen peroxide to produce epichlorohydrin. Acetone is compatible with the mixed system of allyl chloride and hydrogen peroxide. The conversion of hydrogen peroxide was greater than 97% and the selectivity of epichlorohydrin was more than 95% when the stirring rate was more than 300 r/min, the reaction time was 60 min, the reaction temperature was 55-70 ℃ and the molar ratio of allyl chloride to hydrogen peroxide was 1.5. Compared with methanol as solvent, the solubility of acetone per unit mass was lower than that of methanol, and the consumption of acetone was 20% more than that of methanol, but the evaporation heat of acetone was only 82.4% of that of methanol. The energy consumption of acetone recovery and recycling is equivalent to that of methanol. The main side-reactions with acetone as solvent were the hydrolysis reactions of epichlorohydrin, and with methanol as solvent, besides hydrolytic ring-opening reaction of epichlorohydrin, there was also alcoholytic ring-opening reaction.

Key words: actone, allyl chloride, hydrogen peroxide, TS-1, epichlorohydrin