Method for preparing white carbon black by using oil shale ash
A technology for oil mother shale and oil shale ash, applied in the field of preparing silica, can solve the problems of long process route, large acid demand and high cost
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example 1
[0030] Example 1: Weigh 10.0g of kerogen shale ash into a three-necked flask, add 50.0mL of 1.66mol / L NaOH solution, start the electric stirrer, heat to 60°C with an electric heating mantle, and keep the temperature constant for 4 hours. hot filter. After the filtrate was left to stand for a certain period of time, 0.5 g of polyethylene glycol 2000 was added, and HCl was slowly added dropwise to adjust the pH value to 8.5, and at the same time, it was stirred with a magnetic stirrer for 1 hour, then the stirring was stopped, and it was left to stand for 8 hours to obtain a flocculent After precipitation, 3.9g of white carbon black product was obtained after filtration and drying.
example 2
[0031] Example 2: Weigh 10.0g of kerogen shale ash into a three-necked flask, add 50.0mL of 3.30mol / L NaOH solution, start the electric stirrer, heat to 60°C with an electric heating mantle, and keep the temperature constant for 4 hours. hot filter. After the filtrate was left to stand for a certain period of time, 0.5 g of polyethylene glycol 6000 was added, and HCl was slowly added dropwise to adjust the pH value to 7.5, and at the same time, it was stirred with a magnetic stirrer for 1 hour, then the stirring was stopped, and it was left to stand for 8 hours to obtain a flocculent Precipitated, filtered and dried to obtain 4.1g of white carbon black product.
example 3
[0032] Example 3: Weigh 10.0g of kerogen shale ash into a three-necked flask, add 50.0mL of 3.30mol / L NaOH solution, start the electric stirrer, heat to 100°C with an electric heating mantle, and keep the temperature constant for 8 hours. hot filter. After the filtrate was allowed to stand for a certain period of time, 0.5 g of polyethylene glycol 6000 was added, and slowly added dropwise with H 2 SO 4 Adjust the pH value to 5.5, and at the same time stir with a magnetic stirrer for 2 hours, then stop the stirring, let stand and age for 16 hours to obtain a flocculent precipitate, which is filtered and dried to obtain 4.7g of white carbon black product.
[0033] Example 4: Weigh 10.0g of kerogen shale ash into a three-necked flask, add 50.0mL of 3.30mol / L NaOH solution, start the electric stirrer, heat to 100°C with an electric heating mantle, and keep the temperature constant for 4 hours. hot filter. After the filtrate was allowed to stand for a certain period of time, 0.5...
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