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Preparation method and application of hydroxyl phosphonitrile

A technology of hydroxyphosphazene and polymers, which is applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of small adsorption capacity, difficult separation, low recovery and reuse rate, and achieve Good feasibility, simple process, good adsorption selectivity effect

Inactive Publication Date: 2017-11-03
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing adsorption materials have problems such as small adsorption capacity, difficult separation, low recovery and reuse rate, etc. Therefore, a kind of adsorption capacity is designed and developed, which has high removal efficiency, fast adsorption rate, high efficiency and easy recovery, and can be reused many times. Regenerated high-performance adsorbent materials are an inevitable pursuit

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  • Preparation method and application of hydroxyl phosphonitrile
  • Preparation method and application of hydroxyl phosphonitrile
  • Preparation method and application of hydroxyl phosphonitrile

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Experimental program
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Effect test

Embodiment 1

[0026] The preparation process of the hydroxyphosphazene polymer provided by the present embodiment is as follows:

[0027] Add 10.0g of purified hexachlorocyclotriphosphazene (HCCP) into a 250mL flat-bottomed flask, add 150mL of xylene solvent to fully dissolve HCCP, and obtain a 66.67g / L HCCP solution. Place the flask in ice water and control the temperature Below 5°C, under stirring, feed ammonia gas at a uniform speed (the flow rate of ammonia gas is 10-20ml / min) for reaction. After 2-4 hours of reaction, stop charging ammonia gas, seal the reactor, and place it for 8-12 hours. Then filter and dry the filter cake to obtain a white powdery solid. The obtained white powdery solid was placed in a drying oven, polycondensed at 120-150°C for 30 minutes, then taken out, and cooled to room temperature. The obtained polycondensation product was washed with a large amount of deionized water for 3 times, and then vacuum-dried to constant weight at 90° C. to obtain 6.81 g of water-i...

Embodiment 2

[0034] The preparation process of the hydroxyphosphazene polymer provided by the present embodiment is as follows:

[0035]Add 7.5g of hexachlorocyclotriphosphazene (HCCP) through purification into a 250mL flat-bottomed flask, add 150mL of xylene solvent to fully dissolve HCCP, obtain a 50g / L HCCP solution, place the flask in ice water, and control the temperature at Below 5°C, feed ammonia gas at a uniform speed under stirring for reaction. After 2-4 hours of reaction, stop charging ammonia gas, seal the reactor, and place it for 8-12 hours. Then filter and dry the filter cake to obtain a white powdery solid. The obtained white powdery solid was placed in a drying oven, polycondensed at 120-150°C for 30 minutes, then taken out, and cooled to room temperature. The obtained polycondensation product was washed with a large amount of deionized water for 3 times, and then vacuum-dried to constant weight at 90°C to obtain 5.7g of water-insoluble hydroxyl polyphosphazene polymer (H...

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Abstract

The invention discloses a preparation method and application of hydroxyl phosphonitrile. The method comprises the following steps: adding phosphonitrilic chloride trimer into an xylene solvent to be completely dissolved, stirring at below 5 DEG C, introducing dry ammonia gas at constant speed to react, stopping charging the ammonia gas after reacting for 2 to 4 hours, enabling a reactor to be in an airtight state, enabling the ammonia gas in a bottle to react with the phosphonitrilic chloride trimer continuously, placing at normal temperature for 8 to 12 hours, performing suction filtration on the mixture obtained by the reaction to remove the solvent, and airing the filter cake to obtain white powdered solid; performing polycondensation on the while solid at high temperature for 30 minutes, taking out, putting into the air, and cooling to room temperature; and dispersing the polycondensation products into deionized water to wash for many times, performing vacuum drying at 90 DEG C until constant weight to obtain the water-insoluble hydroxyl phosphonitrile polymer. The preparation method of the material is simple, environmentally-friendly, stable and reliable, easily available in material and easy to implement, and the prepared material has good adsorbing effect on dye and heavy metal ions in waste water.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment adsorption materials, in particular to a preparation method and application of a hydroxyphosphazene polymer. Background technique [0002] At present, water pollution is a global problem, especially for some developing countries that are committed to economic development, heavy polluting enterprises are concentrated, and backward sewage treatment technology and backward concepts force them to pollute the environment unconsciously; however, in Faced with the reality of scarcity of fresh water resources, more and more people are beginning to find ways to find solutions. However, due to the huge discharge of industrial wastewater, the treatment is difficult and incomplete, and eventually many pollutants enter natural water bodies more or less. middle. Printing and dyeing wastewater is characterized by high concentration, large water volume, complex components, and large chroma. The wast...

Claims

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Application Information

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IPC IPC(8): C08G79/025C02F1/28C02F101/20C02F101/30
CPCC02F1/285C02F2101/20C02F2101/308C08G79/025
Inventor 梁栋肖敏沈浩莫善军
Owner SUN YAT SEN UNIV