含吡啶环的十聚钨酸季铵盐催化合成环己酮

摘要

以十聚钨酸季铵盐([Bunpy]4W10O32)为催化剂、质量分数30%的H2O4为氧化剂,研究了环己醇催化氧化生成环己酮的反应,考察了反应时间、反应温度、H2O2和催化剂的物质的量等因素对此反应的影响.得出了此反应的最佳条件:反应温度为80℃,催化剂物质的量为0.06 mmol,H2O2物质的量为125 mmol,环己醇物质的量为50 mmol,回流反应8 h.在最佳反应条件下,环己醇的转化率为86.5%,环己酮的选择性可达到98.3%.反应后催化剂不溶于反应体系,简单过滤即可回收,重复使用3次后其活性基本不变.%In this experiment, Bumper harvest element of tomato and Photosynthetic Accelerator were sprayed to flowers and leaves of tomato to study on influence of photosynthesis and yield.The results showed that Bumper harvest element of tomato and Photosynthetic Accelerator complexed obviously enhanced the tomato the tomato photosynthetic rate, raising 67.82％ compared to the comparison.Photosynthetic pigment content, photosynthetic electron transport rate and ATP activity enhanced obviously than the comparison; Rubisco content enhances the 79.84％ compared to comparison., Rubisco carboxylation activity achieve 20.44nmolNADH·ml-1· min-1;while the yield of tomato increasing obviously.