Preparation method of barium diphenylamine sulfonate
A barium diphenylamine sulfonate, sulfonation technology, applied in the preparation of sulfonate, organic chemistry, etc.
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specific Embodiment approach 1
[0020] Specific embodiment one: the preparation method of a kind of barium diphenylamine sulfonate described in this embodiment is realized through the following steps:
[0021] Step 1, add 5Kg diphenylamine and 4~5L concentrated sulfuric acid in 20L conical flask;
[0022] Step 2. Install a stirring device and a decompression device in the 20L Erlenmeyer flask, turn on the stirring device, and raise the temperature of the 20L Erlenmeyer flask to 155~160°C in the stirring state;
[0023] Step 3, start the decompression device, decompress and steam out 500~700ml of water;
[0024] Step 4. Check the degree of sulfonation of the mixed solution in the 20L Erlenmeyer flask. If the sulfonation is not complete, increase the pressure reduction and steam out 100~300mm of water again;
[0025] Step five, add 4 ~ 5L water in 20L conical flask and carry out hydrolysis reaction;
[0026] Step 6. Pour the mixed solution in the 20L Erlenmeyer flask into 50Kg boiling water, add 32~80Kg of 2...
specific Embodiment approach 2
[0031] Embodiment 2: The concentration of concentrated sulfuric acid in step 1 of the preparation method of barium diphenylamine sulfonate described in this embodiment is not less than 98%. Other components and connections are the same as those in the first embodiment.
specific Embodiment approach 3
[0032] Embodiment 3: The hydrolysis reaction in step 5 of the method for preparing barium diphenylamine sulfonate described in this embodiment is carried out at 120-125° C. and kept for 20 minutes. Other components and connections are the same as those in the first embodiment.
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Abstract
Description
Claims
Application Information
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