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Preparing method of gel microsphere material absorbing molybdate

A gel microsphere, molybdate technology, applied in chemical instruments and methods, anion exchange, ion exchange, etc., to achieve the effects of convenient operation, mild and controllable reaction conditions, and good swelling performance

Active Publication Date: 2014-12-10
山西铁居环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Acryloyloxyethyltrimethylammonium chloride (DAC) has developed cationic monomers with excellent performance in recent years. They can be homopolymerized or copolymerized with other monomers to prepare cationic polymers. This polymer can be used in The research and development of functional polymer materials and biomaterials are just in their infancy[18,19], while gel microspheres are rarely reported

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  • Preparing method of gel microsphere material absorbing molybdate
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  • Preparing method of gel microsphere material absorbing molybdate

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preparation example Construction

[0017] A kind of preparation method of the gel microsphere material of adsorption molybdate radical, comprises the steps:

[0018] First, prepare the oil phase and the water phase: use span60 as the dispersant and cyclohexane as the dispersion medium to form the continuous oil phase, wherein the amount of the dispersant Span-60 accounts for 3.5-4.6% of the dispersion medium cyclohexane; The aqueous solution of acryloyloxyethyltrimethylammonium chloride DAC and N,N-methylene bisacrylamide MBA is used as the water phase, wherein the concentration of acryloyloxyethyltrimethylammonium chloride DAC is 2.76mol / L, The concentration of N,N-methylenebisacrylamide MBA is 0.16mol / L;

[0019] Then, in a four-neck flask equipped with a stirrer, a condenser, and an air guide tube, add the oil phase, and pass nitrogen gas for 30 minutes to remove the air in the flask, and heat it to 55°C;

[0020] Afterwards, add the ammonium persulfate that initiator concentration is 0.16mol / L again in wat...

Embodiment 1

[0023] In a four-necked flask equipped with a stirrer, a condenser, and an air duct, add 27 mL of cyclohexane, and then add 0.95 g of dispersant span60 to form the continuous oil phase; add 6.3 mL of acryloyloxyethyl tris Methyl ammonium chloride (DAC), 0.34g N,N , -Methylenebisacrylamide (MBA) is miscible with 7ml of distilled water to form the aqueous phase. Nitrogen was passed through the oil phase for 30 minutes to remove the air in the system, and it was heated to 55°C; 0.032g of initiator ammonium persulfate was added to the water phase, and quickly transferred to a constant pressure dropping funnel after dissolving , slowly added dropwise to the oil phase under stirring at a certain speed, and the dropwise addition was completed within 10 minutes, then the temperature of the system was rapidly raised to 65°C, the stirring rate was controlled at 300rpmin, and the suspension polymerization reaction was carried out for 4 hours under the protection of nitrogen. The microsp...

Embodiment 2

[0025] In a four-necked flask equipped with a stirrer, a condenser, and an air duct, add 46 mL of cyclohexane, and then add 1.84 g of dispersant span60 to form the continuous oil phase; add 6.3 mL of acryloyloxyethyl tris Methyl ammonium chloride (DAC), 0.34g N,N , -Methylenebisacrylamide (MBA) is miscible with 7ml of distilled water to form the aqueous phase. Nitrogen was passed through the oil phase for 30 minutes to remove the air in the system, and it was heated to 55°C; 0.032g of initiator ammonium persulfate was added to the water phase, and quickly transferred to a constant pressure dropping funnel after dissolving , slowly added dropwise to the oil phase under stirring at a certain speed, and the dropwise addition was completed within 10 minutes, then the temperature of the system was rapidly raised to 65°C, the stirring rate was controlled at 500rpmin, and the suspension polymerization reaction was carried out for 4 hours under the protection of nitrogen. The microsp...

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Abstract

The invention belongs to the technical fields of material separation and preparation and functional polymer materials and particularly provides a preparing method of a gel microsphere material absorbing molybdate. The method adopts (2-(acryloyloxy)ethyl)trimethylammonium chloride (DAC) as a monomer, adopts a reversed-phase suspension polymerization method and prepares cation gel microspheres CPDAC having a particle size of 200-300 [mu]m. The preparing method is characterized by high stability, mild conditions, simple process, and convenient and controllable operation. The gel microspheres CPDAC adsorb ammonium molybdate, and are high in exchange capacity and high in exchange speed. The gel microspheres CPDAC have a potential application prospect in the field of extraction and separation of anion materials, the field of drug controlled release, and even the field of removing toxic anions from a water environment.

Description

technical field [0001] The invention belongs to the technical field of material separation preparation and functional polymer materials, and in particular relates to a preparation method of a cationic gel microsphere material which absorbs molybdate. Background technique [0002] Metal molybdenum has very important application value in the alloy industry and electronic device manufacturing industry because of its excellent mechanical properties, electrical properties, corrosion resistance and thermal properties. The precursor of metal molybdenum is molybdate. In the current metallurgical industry, molybdate is mainly produced by hydrometallurgical technology and anion exchange resin. The operation of exchange resin is complicated and the exchange rate is slow. , the shortcoming of low capacity, the present invention is by preparing cationic gel microsphere CPDAC, uses gel microsphere CPDAC as adsorbent (anion exchange column) to ammonium molybdate is adsorbed, separated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/34C08F222/38C08F2/18B01J41/14
Inventor 高保娇雷青娟张正国徐锐杨青
Owner 山西铁居环保科技有限公司
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