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Method for synthesizing nano selenium material

A technology of nano-selenium and selenium powder, which is applied in the field of synthesis of nano-selenium materials, can solve the problem that selenium has no physiological function, and achieve the effects of low corrosion, short reaction steps, and easy-to-obtain raw materials

Active Publication Date: 2017-03-15
扬州帮杰新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary zero-valent selenium does not have any physiological functions. Instead, nano-selenium is a new type of product prepared by nanotechnology. It can not only be absorbed and utilized by the human body, but also exert the unique properties of organic and inorganic selenium. Functions, such as anti-oxidation, immune regulation, etc.

Method used

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  • Method for synthesizing nano selenium material
  • Method for synthesizing nano selenium material
  • Method for synthesizing nano selenium material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1. The process of preparing nano-selenium materials: under cooling in an ice-water bath (ie 0±1°C), mix 20 mL of sodium borohydride ethanol solution with a concentration of 1 mol / L and 20 mmol of selenium powder (the molar dosage is 100% of sodium borohydride) Mix, then add 20 mmol of glucose (10 times the molar amount of sodium borohydride), dodecyltriethylammonium bromide (8.20% of the molar amount of sodium borohydride) and diethyldiisopropyl bromide A mixture of ammonium (the molar amount is 2.60% of that of sodium borohydride) was stirred at 30°C for 24 hours to obtain a precipitate, filtered, and then calcined at 500°C for 5 hours to obtain a nano-selenium material.

[0016] 2. Apply nano-selenium to olefin oxidation and test its catalytic activity.

[0017] The specific steps are: Dissolve 1 mmol of 1,1-diphenylethylene in 1 mL of acetonitrile, then add 10 mg of nano-selenium catalyst, add 2 mmol of hydrogen peroxide aqueous solution with a mass concentration of ...

Embodiment 2

[0018] Embodiment 2: other conditions are the same as embodiment 1, check the reaction of different concentrations of sodium borohydride, and the experimental results are shown in the following table 1.

[0019]

[0020] From the above results, it can be seen that when the reaction sodium borohydride concentration is 1.0 mol / L (Example 1), the yield of benzophenone is the highest, and it can be seen that the nano-selenium material has the strongest activity.

Embodiment 3

[0021] Embodiment 3: other conditions are the same as embodiment 1, check the reaction of different selenium powder consumptions, experimental result is as following table.

[0022]

[0023] As can be seen from the above results, when the selenium powder consumption is 100% (embodiment 1) of sodium borohydride molar weight, the effect is the best.

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Abstract

The invention provides a method for synthesizing a nano selenium material and relates to the application technology of selenium resources. The method includes the following steps: in an environment with a temperature of 0+ / -1 DEG C, mixing an ethanol solution of sodium borohydride with selenium powder while stirring the mixture, adding a mixture composed of sugar, lautyltrethylammonium bromide and diethyldiisopropylammonium bromide in the mixture, and then obtaining a mixture system; increasing the temperature of the mixture system to 20-60 DEG C under a stirring condition for a reaction, obtaining a precipitate after the reaction is completed, conducting suction filtration and then calcinating the precipitate at 450-550 DEG C to obtain the nano selenium material. Compared with a traditional synthesis method, the method has simple and little reaction steps, raw materials are easy to obtain, solid waste is little, the corrosivity is low, and the method is environmentally friendly and is suitable for mass production.

Description

technical field [0001] The invention relates to the application technology of selenium resources, in particular to the technical field of synthesis of nanometer selenium materials. Background technique [0002] my country is rich in selenium resources, and it is of great strategic significance to develop new applications of selenium resources, which can repeatedly play the resource advantages of our country. Chemically speaking, nano-selenium is a reduced selenium, which is equivalent to a zero-valent selenium. However, ordinary zero-valent selenium does not have any physiological functions. Instead, nano-selenium is a new type of product prepared by nanotechnology. It can not only be absorbed and utilized by the human body, but also exert the unique properties of organic and inorganic selenium. Functions, such as anti-oxidation, immune regulation, etc. Most importantly, it has low toxicity that inorganic selenium and organic selenium do not have. It is a relatively safe s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/02B82Y40/00B01J27/057C07C45/27C07C49/786
CPCB01J27/057B82Y40/00C01B19/02C07C45/27C07C49/786
Inventor 俞磊陈昌洲
Owner 扬州帮杰新材料有限公司
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