The present disclosure relates to a method of preparing propylene oxide comprising the steps: (a) oxidizing alpha-methylbenzyl alcohol with air to form a first reaction mixture comprising hydrogen peroxide and acetophenone; (b) reacting propylene with the first reaction mixture in the presence of a catalyst to form a second reaction mixture comprising propylene oxide; (c) separating the propylene oxide from the second reaction mixture to form a third reaction mixture; (d) heating the third reaction mixture to decompose hydrogen peroxide, whereby a fourth reaction mixture is formed; (e) hydrogenating the acetophenone in the fourth reaction mixture with hydrogen to form a fifth reaction mixture comprising alpha-methylbenzyl alcohol; and (f) separating alpha-methylbenzyl alcohol from the fifth reaction mixture and returning the methyl benzyl alcohol to step (a).
本公开涉及一种制备环氧
丙烷的方法,包括以下步骤:(a)将α-甲基
苯甲醇与空气氧化,形成含
过氧化氢和
苯乙酮的第一反应混合物;(b)在催化剂存在下,将
丙烯与第一反应混合物反应,形成含环氧
丙烷的第二反应混合物;(c)从第二反应混合物中分离出环氧
丙烷,形成第三反应混合物;(d)加热第三反应混合物以分解
过氧化氢,形成第四反应混合物;(e)用
氢气对第四反应混合物中的
苯乙酮进行加氢反应,形成含α-甲基
苯甲醇的第五反应混合物;(f)从第五反应混合物中分离出α-甲基
苯甲醇,并将甲基
苯甲醇返回到步骤(a)。