Preparation and application of amino-functionalized MOFs material

A technology of amino functionalization and catalytic reaction, which is applied in the field of metal-organic framework material preparation, can solve the problems of few application reports, and achieve the effect of expanding the application field and making the preparation method simple and feasible.

Active Publication Date: 2017-09-15
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the above characteristics, it can be known that MOFs materials are a class of potential catalysts, but currently MOFs materials are in H 2 There are not many application reports in the field of selective catalytic oxidation of S

Method used

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  • Preparation and application of amino-functionalized MOFs material
  • Preparation and application of amino-functionalized MOFs material
  • Preparation and application of amino-functionalized MOFs material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 0.370 g organic ligand H 2 ATA and 0.808 g Fe(NO 3 ) 2 9H 2 O was dissolved in 20 mL of DMF solution, ultrasonicated for 20 min at 100 W to disperse and dissolve evenly. The obtained solution was transferred to the lining of a polytetrafluoroethylene autoclave, and the autoclave was sealed and placed in an oven at 140 °C for 6 h. After the reaction dropped to room temperature, the obtained product was washed with methanol, centrifuged several times, dried at 80 °C for 4 h, and then treated under static vacuum at 80 °C for 8 h to finally obtain catalyst A.

Embodiment 2

[0037] 0.370 g organic ligand H 2 ATA and 0.808 g Fe(NO 3 ) 2 9H 2 O was dissolved in 20 mL of DMF solution, ultrasonicated for 20 min at 100 W to disperse and dissolve evenly. The obtained solution was transferred to the lining of a polytetrafluoroethylene autoclave, and the autoclave was sealed and placed in an oven at 150 °C for 6 h. After the reaction was cooled to room temperature, the obtained product was washed with methanol, centrifuged several times, dried at 80 °C for 4 h, and then treated under static vacuum at 80 °C for 8 h to finally obtain catalyst B.

Embodiment 3

[0039] 0.370 g organic ligand H 2 ATA and 0.808 g Fe(NO 3 ) 2 9H 2 O was dissolved in 20 mL of DMF solution, ultrasonicated for 20 min at 100 W to disperse and dissolve evenly. The obtained solution was transferred to the lining of a polytetrafluoroethylene high-pressure reactor, and the reactor was sealed and placed in an oven at 160 °C for 6 h. After the reaction was cooled to room temperature, the obtained product was washed with methanol, centrifuged several times, dried at 80 °C for 4 h, and then treated under static vacuum at 80 °C for 8 h to obtain catalyst C.

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Abstract

The invention discloses preparation and application of an amino-functionalized MOFs material. According to the invention, iron salt and 2-aminoterephthalic acid (H2ATA) are taken as raw materials, and a mild solvothermal method is adopted for synthesizing the amino-functionalized MOFs material (NH2-MIL-53(Fe)). The prepared amino-functionalized MOFs material shows good catalytic activity, selectivity and activity stability in H2S selective catalytic oxidation reaction and is more excellent than MIL-53(Fe) carrying no amino, traditional Fe2O3 and activated carbon. According to the invention, the amino-functionalized MOFs material is applied to H2S selective oxidation for the first time, so that the application field of the MOFs material is expanded, and an experimental basis is provided for the design and development of a novel H2S selective catalyst.

Description

technical field [0001] The invention belongs to the field of preparation of metal-organic framework materials, in particular to the preparation of an amino-functionalized MOFs material and its preparation in H 2 Application of selective catalytic oxidation of S. Background technique [0002] During oil and gas processing, large amounts of hydrogen sulfide (H 2 S) gas, harmful to the ecological environment. At present, the Claus process is widely used in the industry to treat H 2 S gas. The process first absorbs H 2 Concentrate after S, and then prepare sulfur element through catalytic reaction. This method can remove H 2 S gas, reducing its harm to the environment, and realizing the recycling of sulfur in it. However, limited by the chemical reaction balance at the reaction temperature, even under good equipment and operating conditions, 3-5% of sulfides in the Claus tail gas are not completely converted. With the increasingly stringent environmental regulations, it ...

Claims

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Application Information

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IPC IPC(8): C08G83/00B01J31/22B01D53/86B01D53/52
CPCB01D53/8612B01J31/1691B01J2231/76B01J2531/0213B01J2531/842C08G83/008
Inventor 江莉龙郑笑笑沈丽娟曹彦宁雷淦昌
Owner FUZHOU UNIV
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