论文部分内容阅读
采用新型Bronsted酸功能化有机高铼酸盐为催化剂、质量分数为30%的H2O2为氧化剂,对含硫化合物进行了催化氧化反应的研究。通过FT-IR、NMR、TGA等手段对这两种催化剂的组成结构和热稳定性进行了表征与分析,考察了不同溶剂、催化剂物质的量、反应温度、氧化剂物质的量、反应时间对转化率、亚砜产率和选择性的影响。所合成的有机高铼酸盐催化氧化硫醚生成亚砜的最佳反应条件为:催化剂物质的量为0.03 mol、H2O2物质的量为2.4mmol、反应温度为40℃、反应时间为90min。按最佳反应条件进行反应,主产物亚砜产率和选择性都可以达到95%以上。
A new type of Bronsted acid-functionalized organic perrhenate was used as catalyst, and 30% H2O2 was used as oxidant to study the catalytic oxidation of sulfur compounds. The structure and thermal stability of these two catalysts were characterized and analyzed by means of FT-IR, NMR and TGA. The influences of different solvents, the amount of catalyst, the reaction temperature, the amount of oxidant and the reaction time on the conversion Rate, Effect of sulfoxide yield and selectivity. The optimal reaction conditions for the synthesis of sulfoxides from the synthesized perrhenates were as follows: the amount of catalyst was 0.03 mol, the amount of H2O2 was 2.4 mmol, the reaction temperature was 40 ℃ and the reaction time was 90 min. According to the best reaction conditions, the yield and selectivity of the main sulfoxide can reach more than 95%.