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A kind of biuret crystalline hydrate and its preparation method and application

A technology of crystalline hydrate and biuret, applied in the field of biuret crystalline hydrate and preparation thereof, can solve problems such as difficulty in preparing biuret hydrate, and achieve the effects of being easy to obtain, cheap and obtainable

Active Publication Date: 2022-07-12
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of difficulty in the preparation of biuret hydrate in the prior art, the content of the present invention is to provide a biuret crystalline hydrate and its preparation method and application

Method used

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  • A kind of biuret crystalline hydrate and its preparation method and application
  • A kind of biuret crystalline hydrate and its preparation method and application
  • A kind of biuret crystalline hydrate and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Weigh 2g of commercially available biuret powder into 20mL of water, stir for 10min to disperse the powder, then transfer the dispersion to the polytetrafluoroethylene lining of the hydrothermal kettle and seal the hydrothermal kettle, then Put it in an oven to react at 100°C for 12h.

[0039] Step 2: After the reaction is finished, after natural cooling, the obtained product is washed by centrifugation and vacuum-dried at 40° C. for 12 hours, and the obtained powder is a biuret crystalline hydrate with a novel structure.

Embodiment 2

[0041] Step 1: Weigh 2g of commercially available biuret powder into 20mL of water, stir for 10min to disperse the powder, then transfer the dispersion to the polytetrafluoroethylene lining of the hydrothermal kettle and seal the hydrothermal kettle, then Put it in an oven to react at 110°C for 12h.

[0042] Step 2: After the reaction is finished, after natural cooling, the obtained product is washed by centrifugation and vacuum-dried at 40° C. for 12 hours, and the obtained powder is a biuret crystalline hydrate with a novel structure.

Embodiment 3

[0044] Step 1: Weigh 2g of commercially available biuret powder into 20mL of water, stir for 10min to disperse the powder, then transfer the dispersion to the polytetrafluoroethylene lining of the hydrothermal kettle and seal the hydrothermal kettle, then Put it in an oven to react at 120°C for 12h.

[0045] Step 2: After the reaction is finished, after natural cooling, the obtained product is washed by centrifugation and vacuum-dried at 40° C. for 12 hours, and the obtained powder is a biuret crystalline hydrate with a novel structure.

[0046] In Examples 1-3, commercially available biuret powders were subjected to hydrothermal treatment at different temperatures and dried to obtain biuret crystalline hydrates with novel structures.

[0047] figure 1 It is the X-ray diffraction (XRD) pattern of the biuret hydrate obtained by the commercially available biuret and hydrothermal treatment in Examples 1 to 3. It can be seen that the commercially available biuret contains biuret ...

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Abstract

The invention provides a biuret crystalline hydrate and a preparation method and application thereof. The preparation method comprises the following steps: adding the biuret into a solvent to disperse to obtain a dispersion, placing the dispersion in a hydrothermal kettle, and performing hydrothermal treatment; After the hydrothermal treatment is completed, it is naturally cooled to room temperature, and the product is taken out, centrifuged, washed and dried to obtain biuret crystalline hydrate powder. The treatment scheme of the method is simple and easy to repeat, and the biuret crystalline hydrate with a novel structure is obtained, which can be used as a synthetic precursor for various organic products.

Description

technical field [0001] The invention relates to the technical field of biuret synthesis, in particular to a biuret crystalline hydrate and a preparation method and application thereof. Background technique [0002] Commercially available biuret powder is a mixture of biuret and biuret hydrate. When used as a precursor for synthesis reaction, the synthesis product may not meet expectations due to its mixed components (for example, using commercially available biuret to synthesize graphite phase nitrogen). Carbon (g-C 3 N 4 ), the obtained g-C 3 N 4 The specific surface area is small, the degree of polymerization is low, and the photocatalytic activity is poor). Studies have shown that biuret hydrate has more extensive and excellent uses in the synthesis process. Therefore, it is very important to convert commercially available biurets into single-phase biuret hydrates simply and quickly by a low-cost method. However, since it is difficult to obtain high-purity crystalli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C275/62C07C273/18
CPCC07C273/189C07C275/62C07B2200/13Y02E60/36
Inventor 师进文姜雨舟程诚郭烈锦
Owner XI AN JIAOTONG UNIV
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