Preparation method of rare-earth complex gel constructed by 4-methylphthalic acid and reversible transformation method of rare-earth complex gel

A technology of methyl phthalic acid and rare earth complexes, which is applied in the preparation of organic compounds, gel preparation, carboxylate preparation, etc., can solve the problem of less research on rare earth complex gels

Inactive Publication Date: 2017-10-24
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are some reports of transition metal complex gels, but the research on rare earth complex gels is still very little, and the interconversion phenomenon of rare earth complex gels has not been reported yet.

Method used

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  • Preparation method of rare-earth complex gel constructed by 4-methylphthalic acid and reversible transformation method of rare-earth complex gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Put 9mg of 4-methylphthalic acid in a beaker, add 2mL of water, and adjust the pH to 6 with 0.1M sodium hydroxide solution to obtain solution A;

[0024] (2) Mix 9 mg of terbium nitrate with 20 mL of acetonitrile to obtain solution B;

[0025] (3) Solution A and solution B were mixed, and the resulting mixture was left to stand in a small glass bottle, and a colorless transparent colloid was obtained after a period of time.

Embodiment 2

[0027] (1) Put 9mg of 4-methylphthalic acid in a beaker, add 2mL of water, and adjust the pH to 6 with 0.1M sodium hydroxide solution to obtain solution A;

[0028] (2) 9 mg of europium nitrate was mixed with 20 mL of acetonitrile to obtain solution B;

[0029] (3) Solution A and solution B were mixed, and the resulting mixture was sealed in a small glass bottle and left to stand, and a colorless transparent colloid was obtained after a period of time.

Embodiment 3

[0031] (1) Put 9mg of 4-methylphthalic acid in a beaker, add 2mL of water, and adjust the pH to 6 with 0.1M sodium hydroxide solution to obtain solution A;

[0032] (2) 9mg of gadolinium nitrate was mixed with 20mL of acetonitrile to obtain solution B;

[0033] (3) Solution A and solution B were mixed, and the resulting mixture was sealed in a small glass bottle and left to stand, and a colorless transparent colloid was obtained after a period of time.

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Abstract

The invention relates to a preparation method of rare-earth complex gel constructed by 4-methylphthalic acid and a reversible transformation method of the rare-earth complex gel. The preparation method comprises the following steps of a), dissolving LnmXn (Ln=rare-earth trivalentions) into a solution; b), adding 4-methylphthalic acid subjected to proton removal into a), placing a mixed solution in a transparent glass bottle and sealing tightly with a bottle cover; c), observing transparent colloid after standing the mixed solution for a period (the colloid is identified by adopting an inversion method). Drying the colloid obtained in the previous step to obtain white powder, adding a mixed solution formed by an organic solvent and water and heating to dissolve the white powder, standing for a while and forming a colorless transparent colloid. Under the irradiation of an ultraviolet lamp, the colloid is changed into a solution, and placing the solution for a period at room temperature and condensing to form colorless transparent colloid. The methods for preparation of the rare-earth complex gel and realization of reversible transformation operation on the gel are simple and convenient, and has strong novelty and practicality.

Description

technical field [0001] The invention relates to the technical field of synthesizing rare earth complex gel and realizing the reversible interconversion of gel, solution and powder, in particular to the technology of preparing rare earth complex gel by reacting 4-methylphthalic acid with rare earth ions and realizing its Reversible interconversion with solution and solid powder. Background technique [0002] The colloidal particles or macromolecules in the solution are connected to each other under certain conditions to form a three-dimensional network structure, and the structural voids are filled with liquid molecules as the dispersion medium. Such a special dispersion system is called gel. Gels have no fluidity and often contain a large amount of liquid inside. For example, the water content of agarose gel and blood gel can reach more than 99%. Gels can be divided into brittle gels and elastic gels. When the brittle gel loses solvent or reabsorbs solvent, its shape and ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C07C63/16C07C51/00C07C51/41C07F5/00C09K11/06B01J13/00
CPCC07C63/16B01J13/0065C07F5/003C09K11/06C09K2211/182
Inventor曾承辉叶杰孟徐松松钟声亮丁立稳
OwnerJIANGXI NORMAL UNIV