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Schiff base type bio-based porous material based on organic aldehyde and melamine and preparation method thereof

A technology of melamine and porous materials, applied in the field of material science, can solve the problems of refractory degradation, secondary pollution of the environment, high cost of raw materials, and achieve the effects of rapid adsorption, good repeatability and high yield

Pending Publication Date: 2020-03-31
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current common porous adsorption materials are mostly derived from fossil resources, the cost of raw materials is high and it is difficult to degrade in the environment, and it is easy to cause secondary pollution to the environment in the process of production, use and recycling

Method used

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  • Schiff base type bio-based porous material based on organic aldehyde and melamine and preparation method thereof
  • Schiff base type bio-based porous material based on organic aldehyde and melamine and preparation method thereof
  • Schiff base type bio-based porous material based on organic aldehyde and melamine and preparation method thereof

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preparation example Construction

[0027] The preparation method of the Schiff base type bio-based porous material is characterized in that it specifically comprises the following steps:

[0028] A certain amount of bio-based organic aldehyde compounds and melamine are dissolved in solvent A, mixed evenly, and stirred and reacted at 80-200° C. for 6-84 hours in the presence of inert gas B atmosphere and catalyst C. After the reaction is completed, the insoluble crude product is obtained by filtration, the unreacted monomer and oligomer in the crude product are removed by washing with solvent D, and the Schiff base type bio-based porous material is obtained after drying.

[0029] The bio-based organic aldehyde compounds are vanillin, 3,5-dimethoxy 4-hydroxybenzaldehyde, 3-hydroxy 4-methoxybenzaldehyde, 3,4,5-trihydroxybenzaldehyde, 3 ,4,5-trimethoxybenzaldehyde, 2,6-dimethoxy4-hydroxybenzaldehyde, 3,4-dioxymethylenebenzaldehyde, 5-hydroxymethylfurfural, 2,5-furan di Any one or more of formaldehyde.

[0030] Th...

Embodiment 1

[0032] In a Shrek bottle, dissolve 1.1g of vanillin and 0.5g of melamine in 100mL of N,N-dimethylformamide solution, add 0.2g of acetic acid, and 2 The reaction was carried out at 150°C for 72h in the atmosphere. After the reaction was completed, it was cooled to room temperature, and a gray solid was precipitated. The solid was filtered, washed with tetrahydrofuran, acetone, and ethanol to remove unreacted raw materials, acetic acid, and oligomers, and vacuum-dried at 60° C. to obtain a light gray vanillin-based porous material (yield 83%).

[0033] According to infrared spectrum analysis, the molecular structure of vanillin-based porous materials contains characteristic peaks of functional groups such as phenolic hydroxyl groups and amino groups ( figure 1 ).

[0034] As determined by the BET analyzer, the specific surface area of ​​the vanillin-based porous material is 562m 2 / g.

[0035] According to the ultraviolet spectrum analysis, the adsorption capacity of the van...

Embodiment 2

[0041]In a Shrek bottle, dissolve 2.7g of 2,5-furandicarbaldehyde and 1.8g of melamine in 100mL of dimethyl sulfoxide solution, add 0.2g of formic acid, and react at 180°C for 80h in a helium atmosphere. After the reaction was completed, it was cooled to room temperature, and a brown solid was precipitated. The solid was filtered, washed with tetrahydrofuran, ethyl acetate, and deionized water to remove unreacted raw materials, formic acid, and oligomers, and freeze-dried at -20°C to obtain a brown furandicarbaldehyde-based porous material (yield 90%).

[0042] Through XRD spectrum analysis, the furandicarbaldehyde-based porous material is an amorphous configuration ( image 3 ).

[0043] As determined by the BET analyzer, the specific surface area of ​​the furandicarbaldehyde-based porous material is 319m 2 / g.

[0044] As determined by inductively coupled plasma optical emission spectrometry, the furandicarbaldehyde-based porous material has a positive reaction to Cu in a...

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Abstract

The invention discloses a Schiff base type bio-based porous material based on organic aldehyde and melamine and a preparation method thereof. A bio-based organic aldehyde compound and melamine are subjected to condensation polymerization to prepare the Schiff base type bio-based porous material. The preparation method disclosed by the invention is simple and convenient and high in yield; the molecular structure of the prepared porous material contains rich adsorption sites such as phenolic groups, amido groups and methoxyl groups, has the advantages of high capacity, rapid adsorption of organic pollutants and heavy metal ions in water and repeated recycling, and can be applied to the fields of organic dye and heavy metal ion-containing wastewater treatment, water resource purification andthe like in the industries of printing and dyeing, electroplating and the like.

Description

technical field [0001] The invention relates to a Schiff-base type porous material and a preparation method thereof, in particular to a method for preparing a Schiff-base type bio-based porous material through polycondensation reaction using bio-based organic aldehyde compounds and melamine, and belongs to the field of material science. Background technique [0002] Pollution sources such as dyes and heavy metal ions in soil and water are highly toxic. They will not only accumulate in soil and water and cause serious environmental pollution, but will also be transferred to the ecosystem through the food chain, causing serious harm to humans and the environment. Adsorption has many advantages, such as convenient operation, low cost, and high treatment efficiency, and has become one of the most widely used dye and heavy metal ion pollutant treatment technologies. [0003] Porous materials have the advantages of high specific surface area, rich pore structure space, etc., and h...

Claims

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Application Information

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IPC IPC(8): C08G12/32B01J20/26B01J20/30C02F1/28C02F101/20C02F101/30
CPCC08G12/32B01J20/262C02F1/285C02F2101/20C02F2101/308
Inventor 金灿孔振武刘贵锋吴国民霍淑平
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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