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Metal organic skeleton material and preparation method thereof

A metal-organic framework and framework material technology, applied in the field of new metal-organic framework materials and their preparation, can solve the problems of physical and chemical properties that do not have selective adsorption and separation capabilities, and achieve good hydrothermal stability, high adsorption effect, and operating conditions mild effect

Inactive Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal-organic framework material has a certain ability to store methane, but due to the pore size factor, it does not have a good selective adsorption and separation ability for mixed gases with little difference in physical and chemical properties.

Method used

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  • Metal organic skeleton material and preparation method thereof
  • Metal organic skeleton material and preparation method thereof
  • Metal organic skeleton material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1.02mg 2,7-bis(3,5-dibenzoic acid)-9-fluorenone, 1.95mg Cu(NO 3 ) 2 ·2.5H 2 O was dissolved in 3 mL of a mixture of N,N'-dimethylformamide and deionized water with a volume ratio of 8:1, and the mixture was sealed and stirred at room temperature. Subsequently, 60 μL of a nitric acid solution with a mass concentration of 70 wt % was added to the reaction flask, and after uniform mixing, the airtight container was moved to an oven, and crystallized at 60° C. for 72 h. Open the reaction bottle, wash the obtained blue-green hexagonal crystal, wash three times with N,N'-dimethylformamide solvent, and dry at room temperature for 24h to obtain metal organic framework material A.

[0033] The determination of the structure of the metal-organic framework material A has been tested on a Shimadzu XRD-6000 X-ray single crystal diffractometer. It shows that the chemical formula of the crystal is C. 29 H 14 Cu 2 O 10 , belongs to orthorhombic crystal system, unit cell parameter...

Embodiment 2

[0035] In Example 1, 2,7-bis(3,5-dibenzoic acid)-9-fluorenone was reduced to 0.408 mg, and other reaction conditions and material composition remained unchanged to obtain metal organic framework material B.

Embodiment 3

[0037] In Example 1, the mixed solution of N,N'-dimethylformamide and deionized water with a volume ratio of 8:1 was increased to 6 mL, and other reaction conditions and material compositions were unchanged to obtain metal organic framework material C .

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Abstract

The invention discloses a metal organic skeleton material and a preparation method thereof. The metal organic skeleton material comprises a secondary structural unit, which is formed through coordination between a Cu2(COO)4 structural unit and oxygen atoms of carboxylic acid. The secondary structural units are linked to each other so as to form a three dimensional channel structure. The chemical formula of the skeleton material is C29H14Cu2O10. The preparation method comprises the following steps: dissolving an organic ligand namely 2,7-bis(3,5-dibenzoic acid)-9-fluorenone and a copper source into an amine solvent and deionized water, evenly stirring in an enclosed container; then adding a nitric acid solution, evenly mixing, then transferring the enclosed container to a baking oven to carry out crystallization; and washing and drying obtained blue-green hexagonal crystals to obtain the metal organic skeleton material. The metal organic skeleton material has a specific pore structure, and is especially suitable for selective adsorption separation of mixed gas (acetylene, ethylene, and ethane), the operation conditions are mild, and the service life is long.

Description

technical field [0001] The invention relates to a metal-organic framework material and a preparation method thereof, more particularly to a novel metal-organic framework material for selective adsorption and separation of methane and a preparation method thereof. Background technique [0002] Methane is the main component of natural gas, coalbed methane, shale gas and biogas, and is a clean, environmentally friendly and economical energy gas resource. In the actual use process, it often coexists with acetylene, ethylene and ethane, and the highly selective adsorption and separation of methane helps to improve the storage density and combustion calorific value of natural gas and other fossil gas resources on the one hand, and also helps to improve the additional higher value of C 2 The utilization rate of gas resources. Therefore, it is of great significance to develop new methane adsorption separation materials with high selectivity and low operating requirements. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08B01J20/22B01D53/02C07C7/12C07C9/04C07C9/06C07C11/04C07C11/24
Inventor 赵亮王海洋王刚方向晨
Owner CHINA PETROLEUM & CHEM CORP
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