Preparation method of polyantimonic acid ion-exchanger

A technology of ion exchanger and polyantimonic acid, which is applied in the direction of ion exchange, cation exchange, chemical instruments and methods, etc., can solve the problems of antimony pentachloride's high toxicity, violent reaction, and difficulty in obtaining it, and achieve low process operation cost, Good adsorption performance and short reaction time

Inactive Publication Date: 2007-08-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high toxicity of antimony pentachloride, the raw materials are expensive and difficult to obtain, and the reaction in the hydrolysis process is relatively violent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the preparation of polyantimonic acid ion exchanger

[0017] Take 10g of antimony trioxide, add 30mL of water, stir and make a slurry, raise the temperature to 90°C, add 6mL of hydrogen peroxide, and continue the heat preservation reaction for 90min. After the reaction was completed and cooled to room temperature, the reacted sol was poured out, and after aging at room temperature for 3 days, the aged product was dried in an oven at 70° C. to obtain a massive solid product. Then pour the dried blocky solid into dilute nitric acid while hot to burst the solid into small particles, wash until neutral, and after several times of drying and bursting, washing and drying, take 40-100 mesh particles as the final polyantimonic acid Inorganic ion exchanger products.

Embodiment 2

[0018] Embodiment 2: the preparation of polyantimonic acid ion exchanger

[0019] Take 10g of antimony trioxide, add 60mL of water, stir and beat, raise the temperature to 60°C, add 9mL of hydrogen peroxide, and continue to keep warm for 90min. After the reaction was completed and cooled to room temperature, the reacted solution was poured out, and after aging at room temperature for 5 days, the aged product was placed in an oven at 70° C. to dry a lumpy solid product. Then pour the dried block solid into dilute nitric acid while hot to burst the block solid into small particles, wash until neutral, and finally take 40-100 mesh particles as the final polyantimonic acid inorganic ion exchange agent products.

Embodiment 3

[0020] Embodiment 3: the preparation of polyantimonic acid ion exchanger

[0021] Take 10g of antimony trioxide, add 40mL of water, stir and beat, raise the temperature to 70°C, add 12mL of hydrogen peroxide, and continue to keep warm for 120min. After the reaction was completed and cooled to room temperature, the reacted solution was poured out, and after aging at room temperature for 2 days, the aged product was placed in an oven at 40° C. to dry a lumpy solid product. Then pour the dried block solid into dilute nitric acid while hot to burst the block solid into small particles, wash until neutral, and finally take 40-100 mesh particles as the final polyantimonic acid inorganic ion exchange agent products.

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PUM

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Abstract

The invention discloses a preparation method of poly-antimonic acid ion exchanger. The method of the invention includes the following steps: 1) antimony trioxide oxidation: antimony trioxide is oxygenated under the presence of oxidants and prepares hydrated antimony pentoxide sol; 2) Oxide aging: aging the prepared hydrated antimony pentoxide sol 1- 30 days under constant temperature of 0 ~ 70 degreeC; 3) drying and exploring in order to form particles: drying the aged hydrated antimony pentoxide sol to poly-antimonic acid solid, putting it into thin nitric acid solution to explore particles and prepares poly-antimonic acid ion exchanger. The invention method has the following advantages: 1. mild preparation conditions and short reaction time; 2. simple installations, low requirements to equipment and easy operation process; 3. preparation process avoids the touch of toxic chemicals; 4. low-cost preparation process, less art operating cost and good adsorption properties of ion exchanger; 5. high selective adsorption capacity of the prepared poly-antimonic acid inorganic ion exchanger to Sr2+.

Description

technical field [0001] The invention relates to a method for preparing polyantimonic acid ion exchangers. Background technique [0002] 90 Sr is an important radionuclide in nuclear fission waste, separated and recovered 90 Sr can not only reduce the potential radioactive threat of nuclear waste to human beings, but also may turn waste into treasure. Inorganic ion exchangers have the advantages of acid resistance, high temperature resistance, radiation resistance, good selectivity, simple preparation, and easy operation, and have good application prospects in the separation of radioactive waste. to Sr 2+ A more selective inorganic ion exchanger is hydrated antimony pentoxide - polyantimonic acid, which can effectively adsorb radionuclides from acidic media 90 Sr. At present, the methods for preparing polyantimonic acid reported in the literature mainly use antimony pentachloride to hydrolyze under neutral or dilute acidic conditions, age at a certain temperature, and dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/12
Inventor 李明愉陈靖王建晨
Owner TSINGHUA UNIV
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