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Iron-based metal-organic-framework material water oxidation catalyst and preparation method thereof

An organic framework, iron-based metal technology, applied in the preparation of cyanide reaction, preparation of organic compounds, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of high cost of water oxidation catalysts and achieve good catalytic effect , good effect, high yield effect

Inactive Publication Date: 2017-01-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to solve the above-mentioned problem of high cost of existing water oxidation catalysts, to propose an iron-based metal-organic framework material water oxidation catalyst and its preparation method, to realize the efficient combination of porous materials and active sites, enrich the water Types of oxidation reaction catalysts, effectively promoting the research of water oxidation reactions and their applications in energy, environment and biomedicine

Method used

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  • Iron-based metal-organic-framework material water oxidation catalyst and preparation method thereof
  • Iron-based metal-organic-framework material water oxidation catalyst and preparation method thereof
  • Iron-based metal-organic-framework material water oxidation catalyst and preparation method thereof

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Effect test

Embodiment 1

[0033] Preparation of Terephthalic Acid-Fe-Based Metal-Organic Framework Water Oxidation Catalyst

[0034] (1) Take terephthalic acid (166mg, 1.0mmol), dissolve it in 16-24mL N,N-dimethylformamide (DMF) (or only add 16mL), stir at room temperature for 5-20min Obtain a clear and transparent solution for subsequent use;

[0035] (2) Add 270~1350mg FeCl to the clear and transparent solution obtained in step (1) 3 ·6H 2 0, stirred at room temperature for 5-20 min to obtain a mixed solution for subsequent use;

[0036] (3) Transfer the mixed solution obtained in step (2) to the reaction kettle, react at 100-150°C for 48-72 hours, filter after cooling, wash with ethanol, and obtain the solid product Fe III (OH)[O 2 C-C 6 h 4 -CO 2 ] is the iron-based metal-organic framework water oxidation catalyst.

[0037] The obtained iron-based metal-organic framework material is characterized by XRD, which proves that the framework structure of the material is MIL-53 (see attached figu...

Embodiment 2

[0046] Preparation of 2-aminoterephthalic acid-iron-based metal-organic framework as catalyst for water oxidation

[0047] (1) Take 2-aminoterephthalic acid (181mg, 1.0mmol), and dissolve it in 16-24mL N,N-dimethylformamide (DMF) (or just add 24mL), stir at room temperature 5 ~ 20min to get a clear and transparent solution, set aside;

[0048] (2) Add 270~1350mg FeCl to the clear and transparent solution obtained in step (1) 3 ·6H 2 0, stirred at room temperature for 5-20 min to obtain a mixed solution for subsequent use;

[0049] (3) Transfer the mixed solution obtained in step (2) to the reaction kettle, react at 100-150°C for 48-72 hours, filter after cooling, wash with ethanol, and obtain the solid product Fe III (OH)[O 2 C-C 6 h 4 -CO 2 ]NH 2 That is, the iron-based metal-organic framework material water oxidation catalyst.

Embodiment 3

[0051] Preparation of 2-Hydroxyterephthalic Acid-Fe-Based Metal-Organic Framework Water Oxidation Catalyst

[0052] (1) Take 2-hydroxyterephthalic acid (182mg, 1.0mmol), dissolve it in 16-24mL N,N-dimethylformamide (DMF), stir at room temperature for 5-20min to obtain clear and transparent solution, spare;

[0053] (2) Add 270~1350mg FeCl to the clear and transparent solution obtained in step (1) 3 ·6H 2 0, stirred at room temperature for 5-20min to obtain a mixed solution for subsequent use;

[0054] (3) Transfer the mixed solution obtained in step (2) to the reaction kettle, react at 100-150°C for 48-72 hours, filter after cooling, wash with ethanol, and obtain the solid product Fe III (OH)[O 2 C-C 6 h 4 -CO 2 ]OH is the iron-based metal-organic framework water oxidation catalyst.

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Abstract

The invention provides an iron-based metal-organic-framework material water oxidation catalyst and a preparation method thereof. The preparation method includes the steps of firstly, dissolving an organic ligand [HO2C-C6H4-CO2H]R into N, N- dimethyl formamide, and stirring under room temperature to obtain a clear and transparent solution for standby; secondly, adding Fe III into the clear and transparent solution obtained in the first step, and evenly stirring under room temperature to obtain a mixed solution for standby; thirdly, transferring the mixed solution obtained in the second step into a reaction kettle, performing constant-temperature thermal reaction, cooling after the reaction, filtering obtained solid products, and washing with ethanol to obtain solid products, namely the iron-based metal-organic-framework material water oxidation catalyst FeIII(OH)[O2C-C6H4-CO2]R. The preparation method has the advantages that the structural unit with the water oxidation catalyzing function is implanted into a metal organic framework material, and the prepared iron-based metal-organic-framework material has excellent pore structures and is beneficial to the increasing of the water oxidation reaction catalyzing ability and efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysts, in particular to an iron-based metal organic framework material water oxidation reaction catalyst and a preparation method thereof. Background technique [0002] With the increasingly prominent energy and environmental issues, new energy and new energy conversion and storage technologies have attracted more and more attention from researchers, and water oxidation reaction is one of the key reactions in many clean energy systems. It is the core step of water splitting in the hydrogen energy system, and is also closely related to various renewable energy devices, sewage treatment and biomedicine. However, the high overpotential of this reaction process makes the water oxidation reaction the bottleneck of the water splitting process. At present, most of the catalysts with good catalytic water oxidation effect use noble metals such as Ru or Ir as the catalytic active center, which is expe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C51/41C07C63/28C07C65/21C07C65/05C07C227/18C07C229/62
CPCB01J31/1691B01J31/2213B01J2531/0238B01J2531/842C07C51/418C07C227/18
Inventor 曲玲玲蔡佳陈秋云
Owner JIANGSU UNIV
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