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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

Inactive Publication Date: 2013-01-16
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

[0009] At present, there are few researches on the preparation of inorganic-organic composite modified bentonite at home and abroad.

Method used

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  • Preparation method for thiamine modified bentonite

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Embodiment

[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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Abstract

The invention relates to preparation methods of bentonite, in particular to a preparation method for thiamine modified bentonite. The method includes: preparing original soil into soil suspension of 5%, stirring for 20min, standing for 5min, using the siphon method to take upper serous liquid, standing for 1 day, taking the upper serous liquid for centrifugation, drying bottom pasty soil, grinding, and going through a sieve of 0.074mm for standby; preparing modifier solution, namely, using hydrochloric acid of 0.1mol / L and analytically pure thiamine to prepare thiamine solution with a mass concentration of 3.5g / L; and finally preparing the thiamine modified bentonite, namely, taking 100mL of the thiamine solution with the mass concentration of 3.5g / L to be uniformly mixed with refined soil, stirring for 60min, leaching, washing, freeze-drying at 0 DEG C, grinding, and going through the 0.074mm sieve to obtain the thiamine modified bentonite. The prepared modified bentonite has no toxic effect on human, animals and plants, and the modified bentonite after use can be recycled as feed and fertilizer, so that secondary pollution is avoided.

Description

technical field [0001] The invention relates to a preparation method of bentonite, in particular to a preparation method of thiamine-modified bentonite. Background technique [0002] Bentonite is a clay mineral widely distributed in nature and belongs to non-metallic minerals. China's bentonite mineral resources are very rich, and its reserves rank first in the world, accounting for 60% of the world's total. The estimated resources are more than 7 billion tons, and it is characterized by wide distribution, shallow burial, easy mining and complete varieties. Bentonite and its purified and modified products have some superior characteristics to varying degrees. These characteristics mainly include swelling, hydrophilicity (or lipophilicity, such as organic bentonite), adsorption, cation exchange, catalytic activity, dispersibility, Suspension, adhesion, thixotropy, stability, non-toxic. With the development of science and technology, people have gradually deepened their unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40
Inventor 邵红曹宁
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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