Combining of light rare earth ion absorbing material

A technology of ion adsorption and light rare earth, which is applied in the direction of adsorption of water/sewage treatment, other chemical processes, chemical instruments and methods, etc., to achieve good acid resistance, low production cost, and rich theoretical and practical effects

Inactive Publication Date: 2013-06-19
SICHUAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis of this adsorbent material and its use in the adsorption of rare earth ions have not been reported in the relevant literature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] The carrier is wood fiber 1.0g

[0023] The adsorption base is 0.8% oak tannin solution 100ml

[0024] The cross-linking agent is 10% glutaraldehyde solution 50ml

[0025] (1) Pretreatment: Soak 1.0g ramie fiber in 2.3% nitric acid solution for 4 hours, filter with suction, wash until neutral, and dry for later use

[0026] (2) Cross-linking reaction: Take the material activated in step (1) above and add it to 100ml 0.8% oak tannin solution and stir for 2 hours, add 50ml 10% glutaraldehyde solution and shake for 2 hours, then add 50ml 5% sulfuric acid solution and allowed to react at 25°C for 8 hours

[0027] (3) Filter the product in step (2), wash it with deionized water, and dry it in vacuum at 40°C for 24 hours, that is, the ramie fiber solidified oak tannin adsorption material of the present invention can be used to adsorb light rare earth ions, and its maximum The adsorption capacity was 295.4 mg / g.

[0028]

example 2

[0030] The carrier is wood fiber 1.0g

[0031] The adsorption base is 0.8% larch tannin solution 100ml

[0032] The cross-linking agent is 50ml of 10% glutaraldehyde solution

[0033] (1) Pretreatment: Soak 1.0g ramie fiber in 2.3% nitric acid solution for 4 hours, filter with suction, wash until neutral, and dry for later use

[0034] (2) Cross-linking reaction: Take the material activated in step (1) above and add it to 100ml 0.8% larch tannin solution and stir for 3 hours, add 50ml 10% glutaraldehyde solution and shake for 2 hours, then add 100ml 5% sulfuric acid solution and allowed to react at 30°C for 8 hours

[0035] (3) Filter the product in step (2), wash it with deionized water, and dry it in vacuum at 40°C for 24 hours, that is, the ramie fiber solidified larch tannin adsorption material described in the present invention can be used to adsorb light rare earth ions, and its maximum The adsorption capacity was 427.0 mg / g.

[0036]

example 3

[0038] The carrier is ramie fiber 1.0g

[0039] The adsorption base is 0.7% persimmon tannin solution 100ml

[0040] The cross-linking agent is 3% dipropylene oxide solution 50ml

[0041] (1) Pretreatment: Soak 1.0g ramie fiber in 2.3% nitric acid solution for 4 hours, filter with suction, wash until neutral, and dry for later use

[0042] (2) Cross-linking reaction: Take the material activated in step (1) above and add it to 100ml 0.7% persimmon tannin solution and stir for 3 hours, add 50ml 3% dipropylene oxide solution and shake for 3 hours, then add 50ml 5% sulfuric acid solution and allowed to react at 25°C for 8 hours

[0043] (3) Filter the product of step (2), wash it with deionized water, and dry it in vacuum at 40°C for 24 hours, that is, the ramie fiber solidified persimmon tannin adsorption material described in the present invention can be used to adsorb light rare earth ions, and its maximum adsorption The amount was 343.6 mg / g.

[0044]

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Abstract

The invention discloses a light rare earth ion absorbing material. The light rare earth ion absorbing material is prepared by the following primary raw materials: a carrier is 100 parts of a plant fiber (such as a wood fiber and a ramie fiber), an absorbing base is various kinds of condensed tannins (such as a oak tannin, a persimmon tannin and a pericarpium granati tannin). The light rare earth ion absorbing material comprises, by mass, 100-1000 parts of 0.8% oak tannin solution, or 100-1000 parts of 0.7% persimmon tannin solution, or 100-1000 parts of 0.8% larix gmelinli tannin solution, or 100-1000 parts of 0.5% pericarpium granati tannin solution. A cross linking agent is aldehydes (such as methanal and glutaraldehyde) or epoxy group (like dual-epoxy propane). The light rare earth ion absorbing material further comprises, by mass, 50-500 parts of 10% glutaraldehyde solution or 50-1000 parts of 3% dual-epoxy propane solution. The carrier and the absorbing base are cross linked in an acid solution, and an environmental-friendly material capable of absorbing the light rare earth ion is obtained. A maximum absorbing quantity is 427.0mg / g. Due to the fact that the light rare earth ion absorbing material only contains carbon (C), hydrogen (H) and oxygen (O) elements, after high temperature burning, recovering of the rare earth ion is convenient.

Description

Technical field: [0001] The invention belongs to the field of synthesizing environment-friendly materials for absorbing rare earth ions, and in particular relates to a synthesis method for light rare earth ion adsorbing materials. Background technique: [0002] Rare earth elements and their compounds have unique optical, magnetic and electronic properties. They are not only widely used in traditional light industry, metallurgy, chemical industry and agriculture, but also in many high-tech fields such as electronics, information, new materials and new energy. Lots of applications. However, natural rare earth ores are based on the coexistence of multiple rare earth elements, and high-tech fields require a large number of rare earth products with high purity and special shapes and shapes. The existing separation technology has been difficult to meet the increasing requirements of high-tech industries. At present, domestic The industrial separation of rare earths mainly uses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 赵仕林黄杵睿廖洋童培杰何春光徐甜甜罗圆圆
Owner SICHUAN NORMAL UNIV
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