Rare earth metal ion supported alginate microsphere catalytic material and method for preparing same

A technology of rare earth metal ions and alginate, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc.

Active Publication Date: 2016-08-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the problem of stable dispersion of the hybrid materials loaded with rare earth metal ions in the solution prepared by the current research has not been solved, its application as a catalytic material still has broad prospects.

Method used

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  • Rare earth metal ion supported alginate microsphere catalytic material and method for preparing same
  • Rare earth metal ion supported alginate microsphere catalytic material and method for preparing same
  • Rare earth metal ion supported alginate microsphere catalytic material and method for preparing same

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Effect test

Embodiment 1

[0059] A load La 3+ The preparation method of the alginate microsphere catalytic material, under the condition of 20 ℃, the aqueous solution of the sodium alginate that the mass percent concentration is 0.5% is mixed with the aqueous solution of the n-pentylamine that the mass percent concentration is 3%, and the sodium alginate and The molar ratio of n-pentylamine is 1:0.3, the relative molecular weights of sodium alginate and n-pentylamine are 25000 and 87.16 respectively, when mixing, the pH value of the system is adjusted to 4 with 0.1mol / L HCl solution, and then Add dropwise LaCl at a concentration of 0.005 g / mL to the mixture 3 Aqueous solution, LaCl 3 The molar ratio to sodium alginate is 0.1:1, stir after the dropwise addition, and the duration is 1h, that is, the loaded La 3+ The aqueous solution of the hybrid material, its mass percentage concentration is 0.5%, continuously stirs and adds precipitant ethanol, precipitant ethanol and load La 3+ The volume ratio of ...

Embodiment 2

[0062] A load Ce 3+The preparation method of the alginate microsphere catalytic material, under the condition of 60 ℃, the aqueous solution of the potassium alginate that the mass percentage concentration is 0.6% is mixed with the aqueous solution of the n-butylamine that the mass percentage concentration is 6%, potassium alginate and The molar ratio of n-butylamine is 1:0.7, the relative molecular weights of potassium alginate and n-butylamine are 15000 and 73.14 respectively, when mixing, with stirring, the pH value of the system is adjusted to 6 with 0.15mol / L HCl solution, and then Add Ce at a concentration of 0.2 g / mL dropwise to the mixture 2 (SO 4 ) 3 Aqueous solution, Ce 2 (SO 4 ) 3 The molar ratio of potassium alginate to potassium alginate is 2.5:1. After the dropwise addition, stir for 2 hours to obtain the loaded Ce 3+ The aqueous solution of the hybrid material, whose mass percent concentration is 1.2%, is continuously stirred and added with precipitant acet...

Embodiment 3

[0065] A load Eu 3+ The preparation method of the alginate microsphere catalytic material, under the condition of 25 ℃, the aqueous solution of the mixture of sodium alginate and potassium alginate with the mass percentage concentration of 1% and the polyetheramine D400 with the mass percentage concentration of 4% The aqueous solution is mixed, the molar ratio of sodium alginate and potassium alginate is 0.5:1, the molar ratio of the mixture of sodium alginate and potassium alginate and polyetheramine D400 is 1:0.5, sodium alginate, potassium alginate and polyether The relative molecular weights of amine D400 are 25000, 15000 and 400 respectively. When mixing with stirring, adjust the pH value of the system to 6 with 0.2mol / L HCl solution, and then add dropwise the concentration of 0.1g / mL Eu(NO 3 ) 3 Aqueous solution, Eu(NO 3 ) 3 The molar ratio with the mixture of sodium alginate and potassium alginate is 0.5:1, stir after the dropwise addition, and the duration is 1.5h,...

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Abstract

The invention relates to a rare earth metal ion supported alginate microsphere catalytic material and a method for preparing the same. The rare earth metal ion supported alginate microsphere catalytic material comprises water-soluble rare earth metal ion supported alginate hybrid materials, water-soluble high-polymer materials, Ca2+ cross-linking agents and water. The water-soluble rare earth metal ion supported alginate hybrid materials comprise alginate, stabilizer molecules and rare earth metal ions. The method includes stably and effectively connecting the rare earth metal ions in the hybrid materials onto molecular chains of the alginate in ionic bond and coordination bond forms; dissolving the water-soluble rare earth metal ion supported alginate hybrid materials and the water-soluble high-polymer materials in the water to obtain spinning solution and carrying out electrostatic spraying to obtain the rare earth metal ion supported alginate microsphere catalytic material. The rare earth metal ion supported alginate microsphere catalytic material and the method have the advantages that the method for preparing the catalytic material is free of pollution and easy to implement, and products rarely contain impurities; the alginate microsphere catalytic material prepared by the aid of the method is high in catalytic efficiency in the aspects of waste gas catalytic treatment, automobile exhaust catalytic decomposition and the like.

Description

technical field [0001] The invention relates to an alginate microsphere catalytic material loaded with rare earth metal ions and a preparation method thereof, belonging to the technical field of catalytic material preparation. Background technique [0002] The method of electrostatic spraying is a very important liquid atomization technology. At present, the preparation technology of microspheres has been successfully applied in the fields of biochemical industry, food and medicine. [0003] Alginate is a natural polysaccharide, a polymer material with good film-forming properties, stability, chelation and biosafety compatibility. 2+ As a cross-linking agent, it can form alginate microspheres with a highly cross-linked network structure. At present, there are many ways to prepare microspheres, such as microemulsion technology, etc., but the preparation process is complicated, the post-processing process is cumbersome, and the preparation cycle is long. Since alginate is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J35/08B01J37/34
CPCB01J31/06B01J35/08B01J37/342
Inventor 孙宾纪晓寰朱美芳江晓泽陈龙宋英华
Owner DONGHUA UNIV
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