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Preparation method and application of H2S selective oxidization catalyst

An oxidation catalyst and selective technology, applied in the direction of physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., to achieve the effect of expanding application fields and simple and easy preparation methods

Active Publication Date: 2017-05-31
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 The application in the field of S selective catalytic oxidation has not been reported yet

Method used

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  • Preparation method and application of H2S selective oxidization catalyst
  • Preparation method and application of H2S selective oxidization catalyst
  • Preparation method and application of H2S selective oxidization catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 1.236 g organic ligand H 2 BDC and 4.05g FeCl 3 ·6H 2 O was dissolved in 45 mL of DMF solution and ultrasonicated for 15 min at 100 W to disperse and dissolve evenly. Transfer the obtained solution to the inner lining of a polytetrafluoroethylene high-pressure reactor, seal the reactor, put it in an oven at 170 °C for 24 h, and after the reaction drops to room temperature, wash the obtained product with methanol and centrifuge three times. It was dried at 80 °C for 6 h, and then treated under static vacuum at 100 °C for 6 h to obtain MIL-53(Fe).

Embodiment 2

[0031] 1.236 g organic ligand H 2 BDC and 4.05 g FeCl 3 ·6H 2 O was dissolved in 45 mL of DMF solution and ultrasonicated for 15 min at 100 W to disperse and dissolve evenly. Transfer the obtained solution to the inner lining of a polytetrafluoroethylene autoclave, add 3 mL of glacial acetic acid and stir evenly, seal the reactor, put it in an oven at 170 °C for 24 h, and after the reaction drops to room temperature, the obtained The product was washed with anhydrous methanol, centrifuged three times, dried at 80 °C for 6 h, and then treated under static vacuum at 100 °C for 6 h to finally obtain MIL-53(Fe)-3H.

Embodiment 3

[0033] 1.236 g organic ligand H 2 BDC and 4.05g FeCl 3 ·6H 2 O was dissolved in 45 mL of DMF solution and ultrasonicated for 15 min at 100 W to disperse and dissolve evenly. Transfer the obtained solution to the lining of a polytetrafluoroethylene high-pressure reactor, add 5 mL of glacial acetic acid and stir evenly, then seal the reactor, put it in an oven at 170 °C for 24 h, and after the reaction drops to room temperature, the obtained The product was washed with anhydrous methanol, centrifuged three times, dried at 80 °C for 6 h, and then treated under static vacuum at 100 °C for 6 h to finally obtain MIL-53(Fe)-5H.

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Abstract

The invention discloses a preparation method and application of an H2S selective oxidization catalyst, and relates to preparation, and regulation and control of a metal-organic framework material (MOFs) and study on the performance of the catalyst for selectively and catalytically oxidizing H2S into sulphur. FeCl3 6H2O and H2BDC are used as raw materials for synthesizing Fe-MOFs MIL-53(Fe) by a mild solvent thermal method. Performance tests show that in the H2S selective oxidization reaction, the Fe-MOFs MIL-53(Fe) shows good catalytic activity and selectivity; in addition, the activity stability is high; meanwhile, in the process of synthesizing Fe-MOFs MIL-53(Fe), the effective regulation and control on the appearance and the performance can be realized through adding acetic acid; the H2S selective oxidization performance can be further improved. The performance of the obtained sample is superior to that of the conventional Fe2O3.

Description

technical field [0001] The invention relates to the preparation of metal-organic framework materials (MOFs), in particular to a novel H 2 Preparation of S selective oxidation catalyst and its application, which can not only eliminate highly toxic H 2 S gas can realize resource utilization of sulfur element. Background technique [0002] Hydrogen sulfide (H 2 S) Widely present in the chemical raw material gas produced from coal, coke, residual oil and natural gas, etc., if it enters the downstream reactor directly without purification, it will cause downstream catalyst poisoning and equipment corrosion, and it will also be discharged into the atmosphere. Will pollute the environment. Currently, H 2 The removal of S mainly adopts the Claus method. The process needs to absorb H 2 Concentrate after S, and then prepare elemental sulfur through further catalytic treatment. can achieve the removal of H 2 The purpose of S gas can also realize the recovery and utilization of ...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01D53/86B01D53/52
CPCB01D53/8612B01J31/1691B01J31/2213B01J2531/0241B01J2531/842B01J35/50
Inventor 江莉龙沈丽娟郑笑笑徐聪波雷淦昌曹彦宁
Owner FUZHOU UNIV
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