摘要:苯酚是一种重要的化学中间体,在医疗、树脂、纤文等很多生产领域都有很广泛的应用。目前来说,全世界苯酚总产量的95%都是通过异丙苯法合成的。但该反应的工艺流程长而复杂,能耗大,收率低,并伴随大量的副产物丙酮的生成,原子利用率低,不符合“绿色化学”的理念。所以,寻求一种高效、廉价的催化剂一步苯氧化制苯酚的工艺迫在眉睫。本实验构建了TiO2-CuO型催化体系,其中TiO2为主催化剂,CuO为助催化剂,进行液相光催化氧化苯一步制取苯酚的反应。为了寻求最佳的反应条件,我们通过实验探讨了助催化剂负载量、催化剂用量、反应时间等因素对苯酚产率的影响。在本实验中以双氧水为氧化剂,在可见光照射条件下,苯酚的最高产率可达到4.1%。 毕业论文关键词:苯;苯酚;光催化;TiO2-CuO;双氧水
The construction and performance of TiO2-CuO photocatalytic system
Abstract: Phenol is an important chemical intermediates, it was widely used in many areas of production such as medical, resin, fiber and so on. In industry, the production of phenol has been dominated by cumene method, recently, 95% of the total yield of phenol are synthesized by this method. But the process of the reaction are long and complex, high energy consumption, low yield, accompanying the formation of a large amount of by-product acetone, low utilization rate of atoms, does not conform to the concept of “green chemistry”. Therefore, imminent process for an efficientm inexpensive catalyst one-step benzene oxidation for phenol. In this experiment, TiO2 as catalyst, TiO2-CuO catalyst for CuO construction side catalyst, and the liquid phase photocatalytic oxidation of benzene to phenol reaction. Effects of the amount of catalyst, catalyst loading, deputy reaction time on the yield of phenol, seeking the best reaction conditions. Using hydrogen peroxide as oxidant, under visible light, the highest yield of phenol can be up to 4.1%.
Keyword: benzene;phenol; photocatalytic;TiO2-CuO;H2O2
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