Method of preparing 1,2-epoxycyclohexane using cyclohexane
A technology of epoxy cyclohexane and cyclohexane, applied in the direction of organic chemistry, can solve the problems of multiple distillation process and time, increase of side reactions, reduction of utilization rate, etc., to achieve high product quality, solve fatal defects, high The effect of conversion rate
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Embodiment 1
[0028] Example 1: Get 100 mol of cyclohexane and put it into a reactor with stirring and a thermometer, heat up to a temperature of 140°C to 150°C, blow in compressed air, keep it at a pressure of 1.4MPa to 1.5MPa, and control the oxygen content in the tail gas to 1vol% to 3vol%, react for 20min~30min, take the reaction solution for analysis, its components include (mass percentage): 94%~97% cyclohexane, 2.5%~4.5% cyclohexyl hydroperoxide, 0.5%~1.0% cyclohexane Alcohol, 0.2%~0.6% cyclohexanone, 0.1%~0.3% are other by-products, such as 1,2-epoxycyclohexane, n-pentanol, cyclohexene, cyclopentanol, adipic acid, pentadiene acid, succinic acid and their various esters, etc.
[0029] 0.5mmol molybdenum (VI) acetylacetonate MoO 2 (acac) 2 and 1.5 mol of cyclohexene into a reactor with stirring and a thermometer, start stirring, heat to about 80°C, and start to continuously add the prepared reaction solution containing 1 mol of cyclohexyl hydroperoxide. After the addition, react fo...
Embodiment 2
[0031] Embodiment 2: drop into the reactor with thermometer with 1mmol tungsten (VI) combined (8-hydroxyquinoline) and get the 1.5mol cyclohexene that embodiment 1 makes, open stirring, logical N 2 , keep warm at about 45°C, and continuously add 1.4mol cyclohexyl hydroperoxide that has been prepared. After the addition, react for 90 to 95 minutes. Other operations are the same as in Example 1.
Embodiment 3
[0032] Embodiment 3: 2.0mmol ammonium metavanadate NH 4 VO 3 Put 0.7 mol of cyclohexene prepared in Example 2 into a reactor with a thermometer, start stirring, heat to about 130° C., and continuously add 1.3 mol of cyclohexyl hydroperoxide that has been prepared. After the addition, react for 35 to 40 minutes. Other operations are the same as in Example 1.
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