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Aromatic acid-based chlorine dioxide aqueous solution and preparation method thereof

A chlorine dioxide and aromatic acid technology, applied in chemical instruments and methods, botanical equipment and methods, chemicals for biological control, etc., can solve the problems of low concentration of chlorine dioxide and the need to increase the concentration, and achieve improvement effect of concentration

Pending Publication Date: 2022-05-10
长沙市岳麓区灵泉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, the concentration of chlorine dioxide in the existing stable chlorine dioxide solution is relatively low, and its concentration needs to be improved

Method used

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  • Aromatic acid-based chlorine dioxide aqueous solution and preparation method thereof
  • Aromatic acid-based chlorine dioxide aqueous solution and preparation method thereof
  • Aromatic acid-based chlorine dioxide aqueous solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of phosphate sodium salt derivatives:

[0029] A. Add 0.1mol succinic anhydride and 0.105mol trishydroxymethylaminomethane into a four-neck flask, then add 60mL of ethanol to dissolve completely, under the protection of nitrogen, heat and reflux for 12h, then lower to room temperature, remove the nitrogen protection, Use hydrochloric acid to adjust the pH value of the solution to 6, then add a mixture of 1g NHS and EDC·HCl (the molar ratio of NHS and EDC·HCl is 2:1) under the protection of nitrogen, stir for 30min, and then add 0.105mol trimethylolamino Methane, then reflux reaction for 12h, stop the reaction, cool to room temperature, then use sodium hydroxide solution to adjust the solution to be neutral, spin dry, then dissolve with 60mL dichloromethane, wash several times with 60mL water, combine the organic phases, and rotate to evaporate, Dry at 50°C, polyhydric compounds;

[0030] B. Add 0.1mol sodium dihydrogen phosphate solution into a four-necked ...

Embodiment 2

[0033] Preparation of phosphate sodium salt derivatives:

[0034] A. Add 0.1mol succinic anhydride and 0.125mol trishydroxymethylaminomethane into a four-necked flask, then add 100mL ethanol to dissolve completely, under nitrogen protection, heat and reflux for 12h, then lower to room temperature, remove nitrogen protection, Use hydrochloric acid to adjust the pH of the solution to 6, then add 2.5g of a mixture of NHS and EDC·HCl (the molar ratio of NHS to EDC·HCl is 2:1) under nitrogen protection, stir for 50min, and then add 0.125mol of trimethylol Aminomethane, then reflux reaction for 12h, stop the reaction, cool to room temperature, then adjust the solution to be neutral with sodium hydroxide solution, spin dry, then dissolve with 60mL dichloromethane, wash with 60mL water several times, combine the organic phases, and spin evaporate , dried at 50°C, polyhydroxyl compounds;

[0035] B. Add 0.1mol sodium dihydrogen phosphate solution into a four-necked flask, adjust the p...

Embodiment 6

[0045] The chlorine dioxide aqueous solution that embodiment 3-1, 3-2, 4-1, 4-2, 5-1, 5-2 and comparative example 1-comparative example 6 obtains carries out following performance test:

[0046] According to the 2002 edition of the disinfection specification and the provisions of GB / T38499-2020, the content and stability of the samples were tested.

[0047] The obtained data are shown in Table 2.

[0048] Table 2

[0049]

[0050] As can be seen from the above table, embodiment 3-1, 3-2, 4-1, 4-2, 5-1, 5-2 obtain chlorine dioxide aqueous solution and the loss of chlorine dioxide under 54 ℃ of conditions is obviously less than The loss of chlorine dioxide in the chlorine dioxide aqueous solution obtained in Comparative Example 1-Comparative Example 6, and Examples 5-1 and 5-2 illustrate that the high-concentration chlorine dioxide aqueous solution still has good stability.

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Abstract

The invention relates to an aromatic acid-based chlorine dioxide aqueous solution and a preparation method thereof, and belongs to the technical field of chlorine dioxide aqueous solution preparation. The preparation method comprises the following steps: 1, uniformly mixing a sodium phosphate derivative, deionized water and aromatic acid to obtain an aromatic acid solution; and 2, introducing chlorine dioxide gas into the aromatic acid solution in a stirring state, and stirring until no bubble is generated, so as to obtain the chlorine dioxide water solution based on aromatic acid. The phosphate sodium salt derivative is a highly symmetrical and branched phosphate surfactant, and a branched structure of the phosphate sodium salt derivative enables a plurality of hydrophobic cavities to exist in molecules of the phosphate sodium salt derivative; and due to the existence of carbonyl, the aromatic acid can easily adsorb chlorine dioxide molecules to enter the hydrophobic cavity to form enveloping on chlorine dioxide and prevent the chlorine dioxide from volatilizing, so that the effect of stabilizing the chlorine dioxide is exerted.

Description

technical field [0001] The invention belongs to the technical field of chlorine dioxide aqueous solution production, and in particular relates to an aromatic acid-based chlorine dioxide aqueous solution and a preparation method thereof. Background technique [0002] Chlorine dioxide is recognized by the World Health Organization as an A1-level high-efficiency bacteriostatic agent due to its strong oxidizing properties and reactivity. Such as treatment of drinking water, industrial wastewater, domestic sewage, industrial circulating cooling water, etc.; fiber bleaching; food preservation and preservation; indoor air purification; livestock and poultry breeding; non-thermal disinfection of medical devices and materials, etc. Gaseous chlorine dioxide is not easy to store and transport, and there is a danger of explosion, so the application form of chlorine dioxide is usually an aqueous solution of chlorine dioxide. However, chlorine dioxide cannot exist stably in water and is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00C07F9/09A01N25/30A01P3/00A01P1/00
CPCA01N59/00C07F9/093A01N25/30
Inventor 龙泽云
Owner 长沙市岳麓区灵泉科技有限公司
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