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Synthesis and preparation of series of pillared metal organic framework materials and low-carbon hydrocarbon separation application of series of pillared metal organic framework materials

A pillared and series technology, which is applied in the field of synthesis and preparation of D-camphoric acid series pillared metal-organic framework materials, can solve problems such as restricting industrial applications and increasing production energy consumption, and achieves reduced energy consumption, low price, and structural simple effect

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

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Problems solved by technology

In actual production, if one wants to obtain higher purity ethylene products, multiple adsorption-desorption cycles are required, which significantly increases production energy consumption and restricts its industrial application.

Method used

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  • Synthesis and preparation of series of pillared metal organic framework materials and low-carbon hydrocarbon separation application of series of pillared metal organic framework materials
  • Synthesis and preparation of series of pillared metal organic framework materials and low-carbon hydrocarbon separation application of series of pillared metal organic framework materials
  • Synthesis and preparation of series of pillared metal organic framework materials and low-carbon hydrocarbon separation application of series of pillared metal organic framework materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1: Weigh 10 mg D-camphoric acid, 16 mg pyrazine, and 20 mg anhydrous copper acetate, and dissolve them in a mixed solution of 3 mL N,N-dimethylacetamide (DMA), 3 mL water and 75 μL tetrafluoroboric acid. After sonicating and obtaining a homogeneous solution, it was then transferred into a 20mL glass reaction vial, and subjected to a constant temperature reaction at 95°C for 48h to obtain the Cu-cam-pyz crystalline sample with a yield of 70% (calculated based on the metal salt).

Embodiment 2

[0043] Step 1: Weigh 10 mg of D-camphoric acid, 28 mg of pyrazine, and 29 mg of cobalt nitrate hexahydrate, and dissolve them in 8 mL of N,N-dimethylacetamide (DMA). After sonicating and obtaining a homogeneous solution, it was then transferred into a 20mL glass reaction vial and subjected to a constant temperature reaction at 95°C for 48h to obtain the Co-cam-pyz crystalline sample with a yield of 66% (calculated based on the metal salt).

Embodiment 3

[0045] Step 1: Weigh 10 mg of D-camphoric acid, 16 mg of pyrazine, and 15 mg of nickel nitrate hexahydrate, and dissolve them in 5 mL of N,N-dimethylformamide (DMF). After sonicating and obtaining a homogeneous solution, it was then transferred into a 20mL glass reaction vial, and subjected to a constant temperature reaction at 120°C for 48h to obtain the Ni-cam-pyz crystalline sample with a yield of 50% (calculated based on the metal salt).

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Abstract

The invention discloses synthesis and preparation of a series of pillared metal organic framework materials and application of the pillared metal organic framework materials in low-carbon hydrocarbon separation, and belongs to the technical field of crystalline porous material preparation and gas separation. The D-camphoric acid series pillared microporous MOF material is formed by cheap and easily available organic ligand D-camphoric acid (cam) and columnar ligands pyrazine (pyz), 2-aminopyrazine (apyz), triethylene diamine (dabco) and metal copper salt, cobalt salt and nickel salt under solvothermal conditions. The MOF crystal structure has high porosity and also has a regular pore channel structure, the channel size is slightly larger than the dynamic size of low-carbon hydrocarbon molecules, a structural basis is provided for low-carbon hydrocarbon gas molecule adsorption separation, and the MOF material is applied to efficient adsorption separation of ethane / ethylene mixed gas. The ethane gas molecules and the framework have stronger acting force, so that the effect of preferentially adsorbing the ethane gas in the ethane-ethylene mixed gas is realized, the ethylene component in the mixed gas is purified, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of preparation of crystalline porous materials and gas separation, and specifically relates to a synthesis and preparation method of D-camphoric acid series pillared metal organic frameworks (Metal organic frameworks, MOF). Purification of ethylene from ethane / ethylene mixtures. Background technique [0002] Ethylene (C 2 h 4 ) is an important basic chemical raw material, which can be used to make rubber and plastic, and to process alcohol. The production scale, output and technology of ethylene indicate the development level of a country's petrochemical industry. It is usually passed through ethane (C 2 h 6 ) produced by steam cracking and thermal decomposition. This process will inevitably produce by-products such as ethane. In order to obtain high-purity polymer-grade ethylene products, it is often necessary to perform ethylene purification operations. C 2 h 6 / C 2 h 4 The separation is also very...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02C07C7/12C07C11/04
CPCB01J20/226B01D53/02C07C7/12B01D2257/7022B01D2256/24C07C11/04Y02C20/40
Inventor 李建荣张鹏丹伍学谦谢亚勃
Owner BEIJING UNIV OF TECH
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