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Metal organic framework adsorbent with subvalent metal node prepared by steam reduction method as well as preparation method and application of metal organic framework adsorbent

A technology of metal-organic frameworks and metal nodes, applied in organic chemistry, adsorption purification/separation, chemical instruments and methods, etc., can solve problems such as weak adsorption and poor adsorption and separation effects, achieve high adsorption and separation efficiency, improve network Combined ability and large adsorption capacity

Pending Publication Date: 2021-05-28
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the current technology, the valence state of the metal site in the metal-organic framework material directly prepared by the reaction of the metal salt and the organic ligand is usually the highest valence state, and the adsorption effect between the adsorbate and the adsorbate is weak, and the adsorption and separation effect is insufficient. good

Method used

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  • Metal organic framework adsorbent with subvalent metal node prepared by steam reduction method as well as preparation method and application of metal organic framework adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 0.1g metal node as Fe 3+ The dry powder of MIL-100 is placed in a glass bottle and placed in isolation from 2mL N,N'-dimethylformamide to ensure that the two do not touch. After sealing, place it in an oven at 250°C for 10 hours. After cooling, you can get Fe 2+ Metal-organic framework adsorbents at metal nodes.

Embodiment 2

[0026] Weigh 0.1g metal node as Fe 3+ The dry powder of MIL-100 is placed in a glass bottle, separated from 2mL formamide to ensure that the two do not touch, sealed and placed in an oven at 250°C for 10h, and after cooling, the Fe-containing 2+ Metal-organic framework adsorbents at metal nodes.

Embodiment 3

[0028] Weigh 0.1g metal node as Fe 3+ The dry powder of MIL-100 is placed in a glass bottle, separated from 2mL of acetamide to ensure that the two are not in contact, sealed and placed in an oven at 250°C for 10 hours, and after cooling, the Fe-containing 2+ Metal-organic framework adsorbents at metal nodes.

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Abstract

The invention discloses a metal organic framework adsorbent with a subvalent metal node prepared by a steam reduction method as well as a preparation method and application of the metal organic framework adsorbent. The metal organic framework adsorbent is characterized in that the metal organic framework adsorbent is of a porous structure of a three-dimensional network which is prepared by loading the subvalent metal node and self-assembling the subvalent metal node and an organic ligand containing carboxylic acid, imidazole, pyrimidine or pyridine. The prepared metal organic framework adsorbent with the subvalent metal nodes is directly used for adsorption desulfurization of fuel oil, separation of olefin and alkane and recovery of carbon monoxide. The invention provides the metal framework adsorbent which is large in adsorption capacity and high in selectivity and adsorption separation efficiency.

Description

technical field [0001] The invention relates to the technical field of chemical separation, in particular to a steam reduction method for preparing a metal-organic framework adsorbent with subvalent metal nodes and a preparation method and application thereof. Background technique [0002] The environmental problems caused by the combustion of large amounts of sulfur-containing fuel oil are becoming more and more serious. Although hydrodesulfurization can effectively remove mercaptans, sulfides and disulfides in fuel oil and is widely used, it is helpless for the removal of thiophene sulfides, so the removal of thiophene sulfides in oil It is imperative. Due to the similar molecular size and similar volatility of alkenes and alkanes, the conditions for separating such mixtures are particularly harsh. Industrial separation of ethylene / ethane requires rectification under low temperature and high pressure conditions, followed by huge energy consumption. Therefore, it is of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/02B01J20/30C10G25/00C01B32/40C07C7/12C07C11/04C07C11/06
CPCB01J20/226B01J20/0229B01J20/0218B01J20/3085C07C7/12C07C11/04C07C11/06
Inventor 孙林兵李玉霞刘晓勤石姝
Owner NANJING UNIV OF TECH
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