Preparation and application of high-stability cuprous modified metal organic framework material

A metal-organic framework, high-stability technology, applied in the refining of hydrocarbon oil, processing of hydrocarbon oil, petroleum industry, etc. Point instability and other problems, to achieve the effect of simple method, improved moisture resistance, and high selectivity

Pending Publication Date: 2019-10-11
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Cu(I) modified metal-organic framework materials have a fatal flaw, that is, Cu(I) has poor stability, which limits its practical application.
Even in a normal environment, the Cu(I) active sites in Cu(I)-modified metal-organic framework materials are extremely unstable, which seriously affects the preparation and storage of Cu(I)-modified metal-organic framework materials. And application This is because Cu(I) is easily oxidized to Cu(II) under the combined action of water vapor and air, losing π complexation force and loss of adsorption activity

Method used

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  • Preparation and application of high-stability cuprous modified metal organic framework material
  • Preparation and application of high-stability cuprous modified metal organic framework material
  • Preparation and application of high-stability cuprous modified metal organic framework material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 0.1g Cu 2 Spread O@HKUST-1 powder in a glass bottle, put 0.1g of polydimethylsiloxane around it to ensure that the two do not touch, seal it and vacuumize it, put it in 215°C for 30 minutes, and let it cool down to room temperature naturally. A highly stable monovalent copper metal-organic framework material was obtained, and the deposited amount of polydimethylsiloxane was 5.9 wt%. After testing, the contact angle was 142°, and it was hydrophobic.

[0030] In the experiment, guarantee Cu 2 O@HKUST-1 powder is not in contact with polydimethylsiloxane, and under high temperature and vacuum conditions, polydimethylsiloxane is vapor-deposited on the surface of the metal-organic framework to form a uniform hydrophobic coating; if both After contact, polydimethylsiloxane does not become vapor-phase deposited on the surface of the metal-organic framework material, but if it is physically mixed, the amount of polydimethylsiloxane will increase, which will cause clogging...

Embodiment 2

[0036] According to Table 2, the monovalent copper-modified metal-organic framework material was dispersed in a solvent to form a suspension, and then the hydrophobic coating was also dispersed in the solvent. After the two are mixed, they are spray-dried in an inert gas, and the collected samples are washed with a solvent and dried in vacuum at 120°C to obtain a highly stable monovalent copper-modified MOF adsorbent.

[0037] Table 2

[0038]

[0039] The mass concentration ratio of the monovalent copper-modified metal-organic framework material to the hydrophobic coating determines the mass content of the hydrophobic coating coated on the surface of the material. When the mass concentration ratio is too large, the adsorbent is still hydrophilic. If the mass concentration ratio of the material is too small, an excessive amount of hydrophobic coating will be introduced to block the pores, which will seriously affect the adsorption performance. As can be seen from the exper...

Embodiment 3

[0041] According to Table 3, weigh the monovalent copper-modified metal-organic framework material, monomer and initiator, add a solvent, seal the reaction at a certain temperature, and naturally cool to room temperature to prepare a highly stable monovalent copper-modified metal-organic framework material Adsorbent.

[0042] table 3

[0043]

[0044]

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PUM

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Abstract

The invention discloses preparation and application of a high-stability cuprous modified metal organic framework material. The high-stability cuprous modified metal organic framework material is involved and comprises a hydrophobic coating and a cuprous modified metal organic framework material; the mass ratio of the hydrophobic coating to the cuprous modified metal organic framework material is (0.02-0.3):1. The preparation method of the high-stability cuprous modified metal organic framework material is further involved. The method comprises the step that the surface of the cuprous modifiedmetal organic framework is coated with the hydrophobic coating. The stability and humidity resistance of the high-stability cuprous modified metal organic framework material are high, and the high-stability cuprous modified metal organic framework material can be applied to desulfuration of fuel oil, separation of olefin and alkane and recycling of carbon monoxide.

Description

technical field [0001] The invention belongs to the technical field of chemical separation, and in particular relates to the preparation and application of a highly stable monovalent copper modified metal organic framework material. Background technique [0002] In today's industrially developed world, the burning of a large amount of sulfur-containing fuel oil has caused increasingly serious environmental problems. 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, and thiophene sulfides account for sulfides in oil. 60-80% of that, so it is imperative to remove thiophene sulfides in oil. [0003] The energy consumed in the rectification process accounts for 10-15% of the world's total energy consumption. Obtaining hydrocarbons from crude oil basically requires refining and separation. Since olefins and alkanes have similar molecular sizes and similar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C10G25/00
CPCB01J20/0237B01J20/226C10G25/003C10G2300/202
Inventor 孙林兵李玉霞刘晓勤
Owner NANJING UNIV OF TECH
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