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Preparation method and application of Nd-MOFs gas adsorption material

A gas adsorption and ligand technology, applied in the field of composite materials, can solve the problems of easy desorption of activated carbon, low recycling rate, high cost of use, etc., and achieve the effect of wide sources, excellent adsorption effect and low recycling cost

Active Publication Date: 2019-05-17
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a kind of Nd-MOFs gas adsorption material, overcome the easy desorption of activated carbon in high temperature environment, low reuse rate, high use cost, zeolite molecular sieve can not be used for strong inorganic The pH value of the solution needs to be strictly controlled in the process of adsorption under acid and strong alkali conditions, and the chemical modification process of the surface of montmorillonite, which is easy to cause changes in various factors, resulting in the decline of the adsorption performance of montmorillonite; used to treat domestic The VOCs gas (aldehydes, aromatic hydrocarbons, pinene, carbon tetrachloride and alkanes, etc.) released during the high and low temperature drying process of Pinus sylvestris has excellent adsorption effect

Method used

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  • Preparation method and application of Nd-MOFs gas adsorption material
  • Preparation method and application of Nd-MOFs gas adsorption material
  • Preparation method and application of Nd-MOFs gas adsorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A preparation method of Nd-MOFs gas adsorption material, including ligand AGE synthesis, material synthesis,

[0044] The ligand AGE synthesis specifically includes the following steps:

[0045] Accurately weigh 10.5 g of phthalic anhydride and pour it into a flat-bottomed flask, add 40 mL of acetone solution, stir magnetically, and dissolve it fully at 30°C, then add 4.5 g of methyl-α-D-galactopyran For glucoside, after heating up to 60°C, add 2mL catalyst N,N-diisopropylethylamine (DIEA), mix well, heat and stir, and reflux for 8 hours, cool the obtained liquid to room temperature, add 1g of anhydrous sulfuric acid Magnesium drying, filtration, and the obtained filtrate was evaporated to remove the acetone solvent by using a rotary evaporator at 58°C to obtain a viscous colorless liquid that is the ligand AGE;

[0046] The material synthesis specifically includes the following steps:

[0047] Ligand solution preparation: accurately weigh 5.5 g of the above-mentioned...

Embodiment 2

[0054] A preparation method of Nd-MOFs gas adsorption material, including ligand AGE synthesis, material synthesis,

[0055] The ligand AGE synthesis specifically includes the following steps:

[0056] Accurately weigh 12.5 g of phthalic anhydride and pour it into a flat-bottomed flask, add 55 mL of acetone solution, stir magnetically, and dissolve it fully at 50°C, then add 5.5 g of methyl-α-D-galactopyranoside , after heating up to 80°C, add 8mL catalyst N,N-diisopropylethylamine (DIEA), mix well, heat and stir, reflux for 8.5 h, cool the resulting liquid to room temperature, add 3 g of anhydrous sulfuric acid Magnesium drying, filtration, and the obtained filtrate was evaporated to remove the acetone solvent by using a rotary evaporator at 62°C to obtain a viscous colorless liquid that is the ligand AGE;

[0057] The material synthesis specifically includes the following steps:

[0058] Ligand solution preparation: accurately weigh 7.0 g of the above-mentioned ligand AGE ...

Embodiment 3

[0065] A preparation method of Nd-MOFs gas adsorption material, including ligand AGE synthesis, material synthesis,

[0066] The synthesis of the ligand AGE specifically includes the following steps: accurately weigh 11.5 g of phthalic anhydride and pour it into a flat-bottomed flask, add 50 mL of acetone solution, stir magnetically, fully dissolve it at 40°C, and then add 5 g Methyl-α-D-galactopyranoside, after heating up to 75 °C, add 4 mL of catalyst N, N-diisopropylethylamine (DIEA), mix well, heat and stir, and reflux for 9 h, the obtained Cool the liquid to room temperature, add an appropriate amount of 2g of anhydrous magnesium sulfate to dry, filter, and evaporate the acetone solvent from the obtained filtrate at 60°C using a rotary evaporator to obtain a viscous colorless liquid that is the ligand AGE;

[0067] The material synthesis specifically includes the following steps:

[0068] Ligand solution preparation: accurately weigh 6.25 g of the above-mentioned ligand ...

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Abstract

The invention discloses a preparation method of an Nd-MOFs gas adsorption material. The preparation method comprises ligand AGE synthesis and material synthesis, and comprises the following specific steps: adding a ligand solution and a neodymium chloride solution into a conical bottle respectively, mixing uniformly, adding N,N-diisopropylethylamine (DIEA) dropwise under a magnetic stirring condition to regulate the pH of the solution to 7 to 8, and stirring for reacting at a room temperature; then performing suction filtration with a vacuum pump, washing the obtained solid with acetone for 2to 5 times, and washing with distilled water for 2 to 4 times; then placing the solid into a drying oven for drying until constant weight to obtain the Nd-MOFs gas adsorption material. The Nd-MOFs gasadsorption material prepared by the method solves the problems of change of multiple factors, degradation in the montmorillonite adsorption performance and the like due to easy desorption of activated carbon under a high temperature environment, incapability of applying a zeolite molecular sieve to adsorption under strong inorganic acid and strong alkali conditions, and the need of strictly controlling the pH value of the solution in the process of chemical modification on the surface of montmorillonite, and has an excellent adsorption effect.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a Nd-MOFs gas adsorption material and its preparation method and application. Background technique [0002] In recent years, with the rapid development of my country's economy and society, the problem of environmental pollution has become increasingly serious, and has become a hot spot in today's society. According to statistics, after particulate matter and sulfur dioxide, the third atmospheric pollutant, volatile organic compounds (VOCs), was found. Most VOCs are toxic, and long-term exposure will seriously endanger human health, damage the human nervous center and immune system; even some VOCs have strong carcinogenic effects, threatening the health of residents. In addition, under the action of light, VOCs and nitrogen oxides will produce photochemical reactions to form photochemical smog, causing breathing difficulties for animals and wilting of plants. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCY02A50/20
Inventor 张晓涛王霞于建芳李淑静贺勤李丽丽王哲姚利宏王雅梅郝一男王喜明
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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