Metal-organic framework film preparation solution, metal-organic framework film and preparation method of metal-organic framework film

An organic framework and metal technology, applied in the field of metal-organic framework membrane and its preparation, can solve the problems of heavy metal chromium pollution and other problems

Active Publication Date: 2020-06-02
GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0022] The purpose of the present invention is to provide a metal-organic framework membrane preparation solution, the metal-organic framework membrane preparation solution belongs to metal "chrome-free" pretreatment technology, can solve the pollution problem of heavy metal chromium from the source, and use the metal-organic framework membrane The metal-organic framework membrane formed by the framework membrane preparation solution has good compatibility with fluorocarbon powder coatings, so that the pollution of heavy metal chromium and VOCs can be eliminated at the source

Method used

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  • Metal-organic framework film preparation solution, metal-organic framework film and preparation method of metal-organic framework film
  • Metal-organic framework film preparation solution, metal-organic framework film and preparation method of metal-organic framework film
  • Metal-organic framework film preparation solution, metal-organic framework film and preparation method of metal-organic framework film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Metal-organic framework membranes were prepared by the following method:

[0087] (1) Etching treatment is carried out on the metal surface to be treated, and the etching amount is 1.2g / m 2 ;

[0088] (2) Spray the metal-organic framework membrane preparation solution evenly on the surface of the metal to be treated, the spray pressure is 0.03MPa, and the treatment time is 20s to form a metal-organic framework membrane, and the metal-organic framework membrane is prepared The solution includes the following components by weight percentage: 0.3mmol / L of 2,4,6-trihydroxybenzoic acid, 0.5mmol / L of sodium fluozirconate, 0.1mmol / L of dilute sulfuric acid solution of manganese fluoride dihydrate, potassium fluoride 0.1mmol / L, sodium diisooctyl sulfonate maleate 6×10 -6 mmol / L, adjust the pH to 4.2;

[0089] (3) Drying the metal-organic framework membrane at a temperature of 80° C. for 20 minutes.

Embodiment 2

[0091] Metal-organic framework membranes were prepared by the following method:

[0092] (1) Etching treatment is carried out on the metal surface to be treated, and the etching amount is 1.5g / m 2 ;

[0093] (2) Soak the metal to be treated in the metal-organic framework membrane preparation solution for 12 minutes to form a metal-organic framework membrane. The metal-organic framework membrane preparation solution includes the following components by weight percentage: 3,4,5-trihydroxy Benzoic acid 1.0mmol / L, fluorotitanic acid 0.3mmol / L, dilute sulfuric acid solution of manganese fluoride dihydrate 0.5mmol / L, potassium sulfate 0.2mmol / L, diisooctyl ammonium maleate 2× 10 -6 mmol / L, adjust the pH to 2.6;

[0094] (3) Drying the metal-organic framework membrane at a temperature of 100° C. for 10 minutes.

Embodiment 3

[0096] Metal-organic framework membranes were prepared by the following method:

[0097] (1) Etching treatment is carried out on the metal surface to be treated, and the etching amount is 1.3g / m 2 ;

[0098] (2) The metal-organic framework membrane preparation solution is evenly coated on the surface of the metal to be treated, and the treatment time is 20s to form a metal-organic framework membrane. The metal-organic framework membrane preparation solution includes the following components by weight percentage: 3 , 0.2mmol / L of 4,5-trihydroxybenzaldehyde, 0.1mmol / L of ammonium fluorozirconate, 0.3mmol / L of dilute sulfuric acid solution of manganese fluoride dihydrate, 0.5mmol / L of potassium hexafluorochlorate, maleic acid Sodium diisooctyl sulfonate 4×10 -6 mmol / L, adjust the pH to 3.0;

[0099] (3) Drying the metal-organic framework membrane at a temperature of 120° C. for 15 minutes.

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Abstract

The invention discloses a metal-organic framework film preparation solution. The metal-organic framework film preparation solution is prepared from the following components: an organic compound A withan aromatic ring and two or more phenolic hydroxyl groups in molecules or a hydrate of the compound A, an ionic compound B containing zirconium and / or titanium and fluorine elements, a mixed solutionC containing manganese fluoride, and an inorganic salt D containing potassium ions or sodium ions. The metal-organic framework film preparation solution belongs to a metal 'chromium-free' pretreatment technology, the pollution problem of heavy metal chromium can be solved from the source, and a metal-organic framework film formed by using the metal-organic framework film preparation solution hasgood compatibility with fluorocarbon powder coating, so that the pollution problem of the heavy metal chromium and VOCs is eliminated from the source. The invention further discloses the metal-organicframework film and a preparation method thereof.

Description

technical field [0001] The invention belongs to the scientific and technical field of pollution control of heavy metals and volatile organic compounds (VOCs), and specifically relates to a metal-organic framework film preparation solution and a liquid that is compatible with fluorocarbon powder coatings so as to eliminate heavy metal chromium and VOCs pollution at the source. Metal-organic framework membrane and its preparation method. Background technique [0002] Heavy metal chromium, especially hexavalent chromium, is a highly toxic pollutant. The National Poison Administration of the United States has concluded through experiments that drinking water containing hexavalent chromium can cause cancer in experimental mice. Because hexavalent chromium is extremely harmful, it has attracted great attention from all over the world to the control of chromium pollution. [0003] In the past, the treatment methods of heavy metal pollution in countries around the world mostly bel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/34C23C22/56C23C22/76C23C22/73
CPCC23C22/34C23C22/56C23C22/76C23C22/73
Inventor 张凯杨仕超马扬
Owner GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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