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Compound of biological metal organic framework packaging corrosion inhibitor as well as preparation method and application of compound

A metal-organic framework and organic framework technology are applied in the field of biological metal-organic framework-encapsulated corrosion inhibitor composites and the field of preparation thereof, which can solve the problems of lack of corrosion inhibitor function and inability to play dual corrosion inhibition, and achieve long-term performance. Effective anti-corrosion performance, efficient and easy to degrade

Pending Publication Date: 2022-03-25
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the current metal-organic frameworks are applied to encapsulate corrosion inhibitors, they are only used as a carrier, and they do not have the effect of corrosion inhibitors, which makes this kind of corrosion inhibitor encapsulation system unable to achieve dual corrosion inhibition effects.

Method used

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  • Compound of biological metal organic framework packaging corrosion inhibitor as well as preparation method and application of compound
  • Compound of biological metal organic framework packaging corrosion inhibitor as well as preparation method and application of compound
  • Compound of biological metal organic framework packaging corrosion inhibitor as well as preparation method and application of compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 Preparation of bio-MOF-1 encapsulated imidazole corrosion inhibitor complex

[0047] The synthetic route of bio-MOF-1 is as follows figure 1 Shown, its preparation method comprises the following steps:

[0048] 1. Preparation of bio-based metal-organic framework bio-MOF-1 carrier:

[0049] (1) 15.14mg (0.0625mmol) 4'4-biphenyl dicarboxylic acid (H 2 BPDC) was added to 10 mL of DMF solvent, heated and stirred at 50°C until completely dissolved, then 8.50 mg (0.0625 mmol) of adenine was added to the solution and stirred until dissolved to obtain ligand mixture A.

[0050] (2) Weigh 41.00mg (0.187mmol) of zinc acetate dihydrate (Zn(CH 2 COOH) 2 2H 2 0) added to 3.5mL DMF solvent, stirred for 5min to obtain solution B.

[0051] (3) Quickly add solution B to ligand mixture A (at this time, the molar ratio of zinc source, 4'4-biphenyldicarboxylic acid and adenine in the mixture is 3:1:1), and then pour into the mixture Add 0.5mL of 0.1M nitric acid and 0.5mL ...

Embodiment 2

[0057] Example 2 Preparation of bio-MOF-1 encapsulated imidazole corrosion inhibitor complex

[0058] 1. The preparation of the bio-based metal-organic framework bio-MOF-1 carrier is the same as in Example 1, the difference is that the amount of 4'4-biphenyl dicarboxylic acid (H2BPDC) is 30.30 mg (0.125 mmol), so that the mixed solution The molar ratio of zinc source, 4'4-biphenyldicarboxylic acid and adenine is 3:2:1.

[0059] 2. The preparation of the corrosion inhibitor composite is the same as that in Example 1. The loading amount of the benzimidazole corrosion inhibitor in bio-MOF-1 is 12.57wt%, and the loading efficiency is 90.62%.

Embodiment 3

[0060] Example 3 Preparation of bio-MOF-1 encapsulated imidazole corrosion inhibitor complex

[0061] 1. The preparation of the bio-based metal-organic framework bio-MOF-1 carrier is the same as in Example 1, the difference is that 4'4-biphenyl dicarboxylic acid (H 2 The usage amount of BPDC) is 45.42mg (0.188mmol), makes the mol ratio of zinc source, 4'4-biphenyl dicarboxylic acid and adenine in the mixed solution be 3:3:1.

[0062] 2. The preparation of the corrosion inhibitor composite is the same as that in Example 1. The loading amount of the benzimidazole corrosion inhibitor on bio-MOF-1 is 11.68wt%, and the loading efficiency is 89.21%.

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Abstract

The invention belongs to the technical field of marine steel corrosion protection, and particularly relates to a biological type metal organic framework packaging corrosion inhibitor compound and a preparation method and application thereof.From the active adsorption molecule design level, firstly, a biological type metal organic framework (bio-MOF-1) with corrosion inhibition components is synthesized through a hydrothermal synthesis method; and then the compound is used as a carrier to package a corrosion inhibitor object, so that the synergistic corrosion inhibition effect of the active components of the compound is fully exerted, and the compound is used for inhibiting corrosion of carbon steel and other metal material products serving in a seawater circulation system. In a corrosion induction stage of a metal corrosion area, an object imidazole molecule is firstly diffused to inhibit corrosion, and when corrosion is further intensified, an aromatic heterocyclic organic ligand is dissociated to generate a synergistic corrosion inhibition effect with imidazole, so that an excellent anti-corrosion effect is achieved. The preparation method is simple in synthesis and high in yield, and the obtained corrosion inhibitor compound has the characteristics of targeted protection, dual corrosion inhibition, efficient effect and the like.

Description

technical field [0001] The invention belongs to the technical field of marine steel corrosion protection, and in particular relates to a bio-type metal-organic framework-encapsulated corrosion inhibitor compound and a preparation method and application thereof. Background technique [0002] Corrosion of service steel in the marine environment has always been a serious problem, causing great economic losses and threatening personal safety. According to statistics, my country's annual economic loss caused by marine corrosion is about 3.1 trillion yuan, accounting for 3.34% of my country's gross national product. In addition, there are countless cases of major safety accidents and casualties caused by steel corrosion every year. Studies have shown that if the corresponding effective protective measures can be taken according to the actual situation, 15-35% of losses can be avoided every year. Therefore, the development of efficient and green corrosion protection technology has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/10
CPCC23F11/10
Inventor 薛铭冯锦华陈俊男张智宇刘亚鑫
Owner SUN YAT SEN UNIV
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