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Preparation method of tantalum-doped hydrated antimony pentoxide adsorbing material

A technology of antimony pentoxide and adsorption materials, which is applied in the direction of chemical instruments and methods, separation methods, cation exchange materials, etc., can solve problems such as no patent literature and non-patent literature reports, and achieve improved adsorption capacity and process flow simple effect

Inactive Publication Date: 2014-08-13
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for HAP materials, the introduction of metal ion doping modification can improve its Sr 2+ The method of adsorption capacity has not been reported in patent literature and non-patent literature

Method used

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  • Preparation method of tantalum-doped hydrated antimony pentoxide adsorbing material
  • Preparation method of tantalum-doped hydrated antimony pentoxide adsorbing material
  • Preparation method of tantalum-doped hydrated antimony pentoxide adsorbing material

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Take 0.7mol / L of SbCl 5 Put 18 parts of hydrochloric acid solution in a polytetrafluoroethylene reactor, add 18 parts of double distilled water, stir to make it fully mixed, then add 19 parts of ammonia water with a concentration of 8mol / L to the above solution, and adjust the pH value to 1.43. Stir for 0.5h, seal the polytetrafluoroethylene reactor, place it in a programmed oven, set the heating and cooling rate to 1°C / min, and conduct hydrothermal treatment at a temperature of 160°C for 48h. After the reaction is completed, take out the reactor and cool to room temperature . The reaction product is washed with distilled water until it becomes neutral, and then placed in a freeze dryer at a temperature of -40° C. to freeze-dry to obtain a hydrated antimony pentoxide material.

Embodiment 2

[0042] Take 0.8mol / L of SbCl 5 Put 15 parts of hydrochloric acid solution in a polytetrafluoroethylene reactor, add 16 parts of double distilled water, stir to make it fully mixed, and then add 0.11mol / L TaCl to the above solution 5 2 parts of ethanol solution, so that the molar ratio of Ta / Sb in the solution is 0.02, stir to make it fully mixed, then add 19 parts of ammonia water with a concentration of 8mol / L to the above solution, adjust the pH value to 1.35, stir the solution for 0.5h, seal The polytetrafluoroethylene reaction kettle is placed in a programmed oven, and the heating and cooling rate is set to 1°C / min. At a temperature of 160°C, hydrothermal treatment is carried out for 48 hours. After the reaction is completed, the reaction kettle is taken out and cooled to room temperature. The reaction product is used Washing with distilled water until neutral, and then freeze-drying in a freeze dryer at a temperature of -40°C, to obtain a tantalum-doped antimony pentoxide h...

Embodiment 3

[0044] Take 0.8mol / L of SbCl 5 Put 15 parts of hydrochloric acid solution in a polytetrafluoroethylene reactor, add 14 parts of twice distilled water, stir to make it fully mixed, and then add 0.11mol / L TaCl to the above solution 5 4 parts of ethanol solution, so that the molar ratio of Ta / Sb in the solution is 0.04, stir to make it fully mixed, then add 19 parts of ammonia water with a concentration of 8mol / L to the above solution, adjust the pH value to 1.29, stir the solution for 0.5h, seal The polytetrafluoroethylene reaction kettle is placed in a programmed oven, and the heating and cooling rate is set to 1°C / min. At a temperature of 160°C, hydrothermal treatment is carried out for 48 hours. After the reaction is completed, the reaction kettle is taken out and cooled to room temperature. The reaction products are respectively Washing with distilled water until neutral, and then freeze-drying in a freeze dryer at a temperature of -40°C to obtain a tantalum-doped antimony p...

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Abstract

The invention discloses a preparation method of a tantalum-doped hydrated antimony pentoxide adsorbing material. The preparation method is characterized by comprising the following steps: preparing 15-18 parts of an SbCl5 hydrochloric acid solution of which the concentration is 0.7-0.8mol / L, adding the SbCl5 hydrochloric acid solution into a polytetrafluoroethylene reaction kettle, adding 0-18 parts of redistilled water, and stirring and mixing; adding 0-18 parts of a TaCl5 ethanol solution of which the concentration is 0.09-0.11mol / L into the solution so as to regulate the molar ratio of Ta to Sb in the solution to be 0-0.18, and stirring and adequately mixing the two solutions; adding 19-21 parts of ammonia water of which the concentration is 8mol / L into the solution, regulating the pH value of the solution to be 1-2, and stirring for 0.5-1 hour; sealing the polytetrafluoroethylene reaction kettle, putting the polytetrafluoroethylene reaction kettle into a programmable drying oven, respectively setting the warming and cooling velocities to be 1 DEG C per minute, carrying out hydro-thermal treatment for 24-48 hours at 160-180 DEG C, taking out the reaction kettle and cooling to the room temperature after the reaction is finished, respectively washing reaction products to be neutral by virtue of distilled water, putting the reaction products into a freezer dryer, and carrying out freeze drying at -40 DEG C, so as to obtain the tantalum-doped hydrated antimony pentoxide adsorbing material.

Description

technical field [0001] The invention relates to a preparation method of a tantalum-doped hydrated antimony pentoxide adsorption material, capable of adsorbing Sr in a neutral solution 2+ , belongs to the field of preparation and application of inorganic functional materials. Background technique [0002] Hydrated antimony pentoxide (HAP) is an inorganic ion-exchange adsorption material with special selectivity. It is a layered polymer with a cubic unit cell structure. The water molecules in its layered structure provide exchangeable h + , exhibiting cation exchange properties. At present, researchers attach great importance to the preparation and application of hydrated antimony pentoxide, especially in the field of radionuclide separation research. As early as 1968, Girardi et al. successfully used the HAP prepared by him to effectively separate HAP in concentrated hydrochloric acid medium 24 Na. Abe, who systematically studied the preparation and exchange adsorption p...

Claims

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Application Information

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IPC IPC(8): B01J20/06B01J20/30B01J39/10B01D15/04B01D15/36
Inventor 张锐牟婉君李兴亮谢翔余钱红吕开魏洪源蹇源
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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