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Application of environment-friendly noble metal adsorbent resin material

An environment-friendly, adsorption resin technology, applied in chemical industry, hydrometallurgy, polymer materials, and environmental fields, can solve the problems of precious metal adsorption and separation applications to be studied, and achieve high selectivity of adsorption objects, large adsorption capacity, and adsorption objects high efficiency effect

Inactive Publication Date: 2020-04-24
湖北千里材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the existing amino acid-based adsorbents focus on the adsorption of heavy metal ions, and there are few reports on the adsorption and separation of noble metal ions, and its application to the adsorption and separation of noble metals remains to be studied.

Method used

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  • Application of environment-friendly noble metal adsorbent resin material
  • Application of environment-friendly noble metal adsorbent resin material
  • Application of environment-friendly noble metal adsorbent resin material

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0044] 1) Using crystalline cellulose microspheres (average diameter of about 200 microns, crystallinity of 76%) as a polymer substrate, put 10 grams of the above materials into a nitrogen-containing PE bag, and use an electron accelerator for electron beam radiation to make it Generates active free radicals that can be used in grafting reactions. Irradiation conditions: irradiation voltage 1MeV, irradiation dose 30kGy, dose rate 10kGy / pass.

[0045] 2) Immediately put the above particles after irradiation into the emulsion reaction system composed of 30wt% GMA+3wt% polyoxyethylene sorbitan monolaurate (Tween20)+67wt% water for graft polymerization. The emulsification reaction system of GMA monomer was continuously blown with nitrogen for 30 minutes before use to remove the oxygen in the water. The graft polymerization reaction is carried out at 50° C., and the reaction is terminated after about 2 hours (the grafting rate of the base material reaches about 250%).

[0046] 3)...

Embodiment 2

[0048] The synthesis method of this example is the same as that of Example 1, except that L-cysteine ​​is replaced with lysine as a reaction monomer to obtain a noble metal adsorption resin.

Embodiment 3

[0050] The synthesis method of this example is the same as that of Example 1, except that L-cysteine ​​is replaced by histidine as a reactive monomer to obtain a noble metal adsorption resin.

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Abstract

The invention belongs to the field of high molecular materials, and in particular relates to application of an environment-friendly noble metal adsorbent resin material. The noble metal adsorbent resin material has high adsorbing activity, such as high adsorbing capacity and high adsorbing efficiency on noble metals, is high in adsorbing selectivity to noble metals and is unlikely to be affected by other metals. A metal object pointed by high adsorbing activity can be adjusted flexibly by adjusting the pH of a solution, and the high adsorbing activity of the metal is not affected, so that thematerial is suitable for adsorbing noble metals, in particular low concentration noble metal elements in an enriched environment. The environment-friendly noble metal adsorbent resin material can be used for preparing materials for purification and / or recovery and / or separation and / or detection, and is applied to the fields of environment, chemical engineering and hydrometallurgy and the like. Theadsorbent resin material can recover noble metals in an aqueous solution efficiently and is simple in post-treatment. The adsorbent resin material is originated from a natural material, is simple inpreparation method, low in cost, green and environment-friendly and suitable for scaled production and popularization.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a noble metal adsorption resin material having the advantages of high adsorption efficiency for noble metal ions (gold, silver, platinum, palladium, etc.), good adsorption selectivity, and adjustable adsorption performance. Resin materials can be used in the fields of environment, chemical industry and hydrometallurgy. Background technique [0002] In recent years, due to their unique physical and chemical properties, precious metals have been widely used in the preparation of catalysts for chemical processing, electronic appliances, anti-corrosion materials and jewelry. And with the development of the economy, the demand for precious metals is increasing. In recent years, the price of precious metals represented by gold has continued to rise, highlighting its importance as a strategic resource. Although new resources are constantly being discovered, minerals are no...

Claims

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Application Information

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IPC IPC(8): C22B11/00C22B3/24C22B7/00
CPCC22B3/24C22B7/006C22B11/046Y02P10/20
Inventor 赵根堂毛忠良杨鑫杜纪富
Owner 湖北千里材料科技有限公司