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Preparation method for ammonium phosphomolybdate composite gel adsorption material

A composite gel and ammonium phosphomolybdate technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal compounds, etc., can solve problems such as granulation and molding difficulties, and achieve weakened agglomeration and reduced crosslinking Effects on density, improved stability and mechanical properties

Inactive Publication Date: 2019-02-01
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a kind of ammonium phosphomolybdate composite gel adsorption material, which not only retains the good adsorption properties of ammonium phosphomolybdate, but also solves the problems of difficult granulation and molding and / or defect, has good acid and alkali resistance and mechanical properties

Method used

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  • Preparation method for ammonium phosphomolybdate composite gel adsorption material
  • Preparation method for ammonium phosphomolybdate composite gel adsorption material
  • Preparation method for ammonium phosphomolybdate composite gel adsorption material

Examples

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Embodiment 1

[0031] A preparation method of ammonium phosphomolybdate composite gel adsorption material, comprising the following steps:

[0032] Step 1. Add 10g of sodium alginate and 1g of PG into 40g of deionized water, heat and stir at 80°C for 4 hours until uniformly mixed;

[0033] Step 2: ultrasonically disperse 1 g of ammonium phosphomolybdate in the aqueous solution, add the mixture after cooling to room temperature, and stir for 5 hours to make the mixed solution evenly mixed;

[0034] Step 3, adding the mixed solution obtained in Step 2 dropwise into a boric acid solution of 1% calcium ion with a syringe for chemical cross-linking, and soaking for 24 hours to obtain a formed composite gel with a particle size of 1-5 mm;

[0035] Step 4: Separation, fully washing with distilled water for 4 times and drying to obtain a composite gel adsorption material.

Embodiment 2

[0037] A preparation method of ammonium phosphomolybdate composite gel adsorption material, comprising the following steps:

[0038] Step 1. Add 5g of ammonium alginate and 1g of PG into 45g of deionized water, heat and stir at 80°C for 3 hours until uniformly mixed;

[0039] Step 2: ultrasonically disperse 1 g of ammonium phosphomolybdate in the aqueous solution, add the mixture after cooling to room temperature, and stir for 4 hours to make the mixed solution evenly mixed;

[0040] Step 3, adding the mixed solution obtained in Step 2 dropwise into a 10% calcium ion boric acid solution with a syringe for chemical cross-linking, and soaking for 24 hours to obtain a formed composite gel with a particle size of 1-5 mm;

[0041] Step 4: Separation, fully washing with distilled water for 4 times and drying to obtain a composite gel adsorption material.

Embodiment 3

[0043] A preparation method of ammonium phosphomolybdate composite gel adsorption material, comprising the following steps:

[0044] Step 1. Add 1g of sodium alginate and 1g of PG into 50g of deionized water, heat and stir at 80°C for 2 hours until the mixture is uniform;

[0045] Step 2: ultrasonically disperse 1 g of ammonium phosphomolybdate in the aqueous solution, add the mixture after cooling to room temperature, and stir for 2 hours to make the mixed solution evenly mixed;

[0046] Step 3, adding the mixed solution obtained in Step 2 dropwise into a boric acid solution of 1% calcium ion with a syringe for chemical cross-linking, and soaking for 24 hours to obtain a formed composite gel with a particle size of 1-5 mm;

[0047] Step 4: Separation, fully washing with distilled water for 4 times and drying to obtain a composite gel adsorption material.

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Abstract

The invention discloses a preparation method for an ammonium phosphomolybdate composite gel adsorption material. The preparation method comprises the following steps: (1) dissolving sodium alginate and PG in deionized water under the condition of heating, and carrying out uniform and complete stirring; (2) adding an ultrasonically-dispersed ammonium phosphomolybdate aqueous solution into an obtained mixed solution, and carrying out uniform mixing under complete stirring; (3) adding the above-mentioned mixed solution into a boric acid solution of calcium ions in a dropwise manner by using an injection syringe so as to form a composite gel; and (4) separating, carrying out complete washing with distilled water, and carrying out drying so as to obtain a composite gel adsorption material. Thecomposite gel adsorption material provided by the invention has the advantages of simple preparation process, low cost, good permeability, acid-alkali tolerance, adsorption selectivity, mechanical stability and recyclability, and capability of being extensively applied to comprehensive development and utilization of salt lake brine and geothermal water resources.

Description

technical field [0001] The invention belongs to the field of composite materials and relates to a cesium adsorption material, which is a preparation method of an ammonium phosphomolybdate composite gel adsorption material. Background technique [0002] Cesium is an important rare alkali metal. Cesium and its compounds are widely used in modern technology fields such as aerospace, electronic devices, and biomedicine. There are two main sources of cesium, one is solid minerals such as lepidolite and cesium garnet, and the other is liquid cesium resources such as salt lake brine, geothermal water, and underground brine. Due to the complexity of the development of solid minerals and the limited resources, people have gradually turned their attention to liquid minerals with abundant reserves, simple extraction process and low cost. The separation and extraction of cesium resources from salt lake brine can not only promote the comprehensive development and utilization of salt lak...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/28B01J20/30C02F1/28C02F1/58
CPCB01J20/0218B01J20/28047C02F1/281C02F1/58
Inventor 邓天龙陈尚清胡佳音李明礼多吉余晓平郭亚飞王士强
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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