Method for preparing hexafluorobutadiene from iodine and chlorine
A technology of hexafluorobutadiene and hexafluorobutane, which is applied in the field of hexafluorobutadiene preparation, can solve the problems of long reaction time, many side reactions, low catalytic efficiency, etc., and achieves a long reaction time and many side reactions. Effect
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[0031] Example 1:
[0032] (1) Preparation of metal complex ionic liquid solvent:
[0033] In the 500L reactor, add 100Kg ethanol, 0.05Kg vitamin B12 (Vitamin B12), 0.2Kg 1-ethyl ethyl ether-3-methylimidazole tetrafluoroborate, 1Kg boron trifluoride ether solution, add Mixing in the reaction kettle at room temperature for 20h to prepare a metal complex ionic liquid solvent;
[0034] (2) preparation of iodine monochloride:
[0035] Add 100Kg of iodine in the 500L reactor, the reaction temperature is 58 ℃, the iodine is sublimated, and the chlorine gas is fed, and the chlorine gas and the iodine mol ratio are 1.2: 1, and the reaction end point is that the solid is completely transformed into a liquid, and the obtained liquid is distilled to obtain a monochloride Iodine products.
[0036] (3) Preparation of 1,2-dichloro-2-iodo-1,1,2-trifluoroethane:
[0037] In the 500L reactor, add 100Kg of iodine monochloride, iodine monochloride, and chlorotrifluoroethylene into the reacto...
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[0042] Example 2:
[0043] (1) Preparation of metal complex ionic liquid solvent:
[0044] In the 500L reactor, add 100Kg1, 4-dioxane, the vitamin B12 (Vitamin B12) of 0.01Kg, the 1-ethyl ethyl ether-3-methylimidazole tetrafluoroborate of 0.05Kg, 0.5Kg three The boron fluoride ether solution was added to the reaction kettle and mixed at room temperature for 10 hours to prepare a metal complex ionic liquid solvent;
[0045] (2) preparation of iodine monochloride:
[0046] Add 100Kg of iodine in the 500L reactor, the reaction temperature is 55 ℃, the iodine is sublimated, and the chlorine gas is fed, and the chlorine gas and the iodine mol ratio are 1.1: 1. The reaction end point is that the solid is completely transformed into a liquid, and the obtained liquid is distilled to obtain a monochloride Iodine products.
[0047] (3) Preparation of 1,2-dichloro-2-iodo-1,1,2-trifluoroethane:
[0048] In a 500L reactor, add 100Kg of iodine monochloride, iodine monochloride, and chlo...
Example Embodiment
[0053] Example 3:
[0054] (1) Preparation of metal complex ionic liquid solvent:
[0055] In 500L reactor, add 60Kg tetrahydrofuran, 40Kg propanol, 0.1Kg vitamin B12 (VitaminB12), 0.5Kg 1-ethyl ethyl ether-3-methylimidazole tetrafluoroborate, 2Kg boron trifluoride ether The solution was added to the reaction kettle and mixed at room temperature for 40 hours to obtain a metal complex ionic liquid solvent;
[0056] (2) preparation of iodine monochloride:
[0057] In the 500L reactor, add 100Kg of iodine, the reaction temperature is 70 ° C, the iodine is sublimated, and the chlorine gas is fed, and the chlorine gas and the iodine mol ratio are 1.5: 1. The reaction end point is that the solid is completely transformed into a liquid, and the obtained liquid is distilled to obtain a monochloride. Iodine products.
[0058] (3) Preparation of 1,2-dichloro-2-iodo-1,1,2-trifluoroethane:
[0059] In a 500L reactor, add 100Kg of iodine monochloride, iodine monochloride, and chlorotri...
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