Adsorbent as well as preparation method and application thereof

A technology of adsorbent and solvent, which is applied in the field of adsorbent and its preparation, can solve the problems such as the inability to prepare π-complex adsorption materials, and achieve the effects of increasing gas adsorption effect, simple and easy preparation method, and excellent specific surface area

Pending Publication Date: 2021-09-07
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the π-complex adsorption material with MOFs structure cannot be prepared by the organic solvent impregnation method in the prior art, thereby providing an adsorbent and its preparation method and application

Method used

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  • Adsorbent as well as preparation method and application thereof
  • Adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of adsorbent, wherein the content of Cu is about 35%, the specific preparation process is as follows:

[0028] (1) At 25°C, 22.1g copper acetylacetonate was dissolved in 80.0g chloroform to obtain a chloroform solution of copper acetylacetonate;

[0029] (2) Using the impregnation method, 10 g of the ZIF-8 carrier was impregnated in the above-mentioned chloroform solution of copper acetylacetonate, and dried at 80° C. to obtain a sample.

[0030] (3) The sample was reduced in a nitrogen atmosphere at 300°C for 3 hours to obtain Cu-loaded + the adsorbent.

Embodiment 2

[0032] A kind of adsorbent, wherein the content of Cu is about 10%, the specific preparation process is as follows:

[0033] (1) under normal temperature, 4.5g copper acetylacetonate is dissolved in 80.0g chloroform, obtain the chloroform solution of copper acetylacetonate;

[0034] (2) Using the impregnation method, 10 g of the ZIF-8 carrier was impregnated in the above-mentioned chloroform solution of copper acetylacetonate, and dried at 80° C. to obtain a sample.

[0035] (3) The sample was reduced in a nitrogen atmosphere at 300°C for 3 hours to obtain Cu-loaded + the adsorbent.

Embodiment 3

[0037] A kind of adsorbent, wherein the content of Cu is about 30%, the specific preparation process is as follows:

[0038] (1) At 25°C, 17.6g copper acetylacetonate was dissolved in 80.0g chloroform to obtain a chloroform solution of copper acetylacetonate;

[0039] (2) Using the impregnation method, 10 g of the ZIF-8 carrier was impregnated in the above-mentioned chloroform solution of copper acetylacetonate, and dried at 80° C. to obtain a sample.

[0040] (3) The sample was reduced under a nitrogen atmosphere at 200°C for 4 hours to obtain Cu-loaded + the adsorbent.

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Abstract

The invention discloses an adsorbent and a preparation method and application thereof. The preparation method of the adsorbent comprises the following steps: preparation of metal salt solution, specifically, metal salt is dissolved in a solvent to obtain the metal salt solution, the metal salt is copper salt, and the solvent is ethyl alcohol or chloroform; loading: dipping the ZIF-8 carrier in a metal salt solution, and drying to obtain a dried product; and reduction: reducing the dried product into an adsorbent containing monovalent metal ions in an inert atmosphere at the temperature of less than or equal to 400 DEG C. The adsorbent containing the monovalent metal ions can be effectively prepared by adopting an organic solvent impregnation method, the preparation method does not cause framework collapse of MOFs, and the preparation method is simple, easy to implement and suitable for large-scale production; and the prepared adsorbent has more efficient CO gas adsorption capacity.

Description

technical field [0001] The invention relates to the field of gas purification, in particular to an adsorbent and its preparation method and application. Background technique [0002] Industrial hydrogen production and hydrogen production from fossil energy are the main sources of industrial hydrogen, but the CO impurity contained in this hydrogen source has a poisonous effect on many catalysts, which limits its application in some industries. The adsorption separation method has a high adsorption capacity and selectivity for CO gas, and is currently recognized in the industry as a promising method for the purification of CO in hydrogen. [0003] The core of the adsorption separation method is the adsorbent. The adsorbent is generally composed of a carrier and an active center. The carrier is a porous material with a large specific surface area. The active center is a metal component that can interact with the adsorbed gas. The active center of the CO adsorbent is mainly a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02C01B3/56
CPCB01J20/226B01J20/0237B01D53/02C01B3/508C01B2203/042C01B2203/047
Inventor 宋小云康伟邓占锋徐桂芝陈国宏滕越
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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