Preparation method for thiamine modified bentonite
A technology of thiamine and bentonite, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., can solve the problems of less research on the preparation of inorganic-organic composite modified bentonite, achieve significant modification effect and easy operation , Change the effect of layer spacing and specific surface area
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[0029] First, purify the original soil: make the original soil into a 5% soil suspension, stir for 20 minutes, and after standing for 5 minutes, use the siphon method to take the upper slurry, let it stand for 1 day, take the upper slurry and centrifuge, and the bottom paste soil Dry, grind, pass through a 0.074mm sieve, and set aside.
[0030] Then prepare modifier solution: use 0.1mol / L hydrochloric acid and analytically pure thiamine to prepare a mass concentration of 3.5g / L thiamine solution.
[0031] Finally, prepare thiamine-modified bentonite: take 100 mL of thiamine solution with a mass concentration of 3.5 g / L and mix it evenly with a certain quality of refined soil, stir for 60 minutes, filter with suction, wash, freeze-dry at 0 ° C, grind, pass 0.074 mm Sieve to obtain thiamine-modified soil.
[0032] The optimum preparation conditions of thiamine modified bentonite:
[0033] The concentration of bentonite slurry is 5%, the mass concentration of thiamine solution is...
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