对孟烷氧化反应催化剂的制备、表征及工艺优化

Preparation and characterization of catalysts for oxidation of p-menthane and improvement of reaction process

摘要:

采用水热合成法制备了适用于对孟烷氧化反应的Co催化剂和Mn催化剂,采用N2吸附-脱附、SEM、XRD、FTIR、XPS对催化剂进行表征,并探究催化剂在对孟烷氧化反应中的催化效果。采用鼓泡塔反应器连续式生产工艺进行对孟烷的氧化反应,生成过氧化氢对孟烷；从催化剂种类、反应温度、反应时间、反应前是否添加引发剂方面对反应工艺进行探究。实验表明最佳工艺条件为：反应前加入PMHP引发剂、Co催化剂,反应温度120℃,反应时间8h；经GC-MS分析此时过氧化氢对孟烷的含量为30.28％,达到市场优秀水平。

Abstract:

Preparation of Co and Mn catalysts suitable for the oxidation of paramenan by hydrothermal synthesis, the catalysts were characterized by N2 adsorption-desorption, SEM， XRD, FTIR, XPS, the catalytic effect of the catalysts in the oxidation of p-menthane was explored. The continuous production process of bubbling column reactor is used to carry out the oxidation reaction of p-menthane to generate p-menthane hydroperoxide; the reaction process is explored from the aspects of type of catalyst, reaction temperature, reaction time, and whether to add an initiator before the reaction. The optimum process conditions were as follows: adding PMHP initiator and Co catalyst before the reaction, the reaction temperature was 120°C, and the reaction time was 8h; According to GC-MS analysis, the content of p-menthane hydroperoxide was 30.28%, which reached an excellent level in the market.