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Metal-organic framework MOF material with high methane adsorption and storage density

A storage density, organic framework technology, applied in organic chemistry, bismuth organic compounds, iron organic compounds, etc., can solve the problems of complex preparation and molding process, small methane adsorption capacity, unstable quality, etc., and achieve excellent molecular diffusion and adsorption. --Desorption performance, large adsorption capacity, stable and reliable quality

Inactive Publication Date: 2014-07-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For the natural gas MOF adsorbents developed in the past, there are problems in the adsorption and storage of natural gas such as special organic ligands, high synthesis costs, complicated preparation and molding processes, unstable quality, and small methane adsorption capacity.

Method used

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  • Metal-organic framework MOF material with high methane adsorption and storage density

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 0.92 g of 5-sulfonic acid group, 0.92 g of 2,7-naphthalene dicarboxylic acid and 0.30 g of ferric chloride hydrate into a 100 mL Teflon stainless steel reaction kettle, then add 15 mL of cyclohexanol, 10 mL of ethanol and 20 mL of deionized water, and stir After uniform sealing, react at 110-120°C for 20-24 hours. The product is cooled to room temperature to obtain a colorless block crystal, which is filtered and dried, and then evaporated in a nitrogen stream at 110°C to remove water and solvents to make MOF. Adsorbent I.

Embodiment 2

[0023] Add 0.78 g of 1-nitro, 2, 6-naphthalene dicarboxylic acid and 0.35 g of aluminum chloride hydrate into a 100 mL Teflon stainless steel reaction kettle, then add 10 mL of cyclohexanol, 15 mL of ethanol and 20 mL of deionized water, and stir well After sealing, react at 110-120°C for 20-24 hours. The product is cooled to room temperature to obtain a colorless block crystal, which is filtered and dried, and then volatilized in a nitrogen stream at 110°C to remove water and solvent to make MOF adsorption. Agent II.

Embodiment 3

[0025] Add 0.95 g of 3-amino, 2,6-naphthalene dicarboxylic acid and 0.62 g of hydrated lanthanum nitrate into a 100mL Teflon stainless steel reaction kettle, then add 5 mL of methylcyclohexanol, 12 mL of ethanol and 20 mL of deionized water, stir evenly and seal Afterwards, react at 110-120°C for 20-24 hours. The product is cooled to room temperature to obtain a colorless block crystal, which is filtered and dried, and then evaporated to remove water and solvent in a nitrogen stream at 110°C to make a MOF adsorbent. III.

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Abstract

The invention relates to a metal-organic framework MOF material with the high methane adsorption and storage density. According to the metal-organic framework MOF material, naphthalene binary or ternary carboxylic acid organic ligands and derivatives of naphthalene binary or ternary carboxylic acid organic ligands are used in match with metal cations of ferric iron, lanthanum, bismuth, nickel, aluminum and cerium to form a three-dimensional neat network porous channel structure in the presence of coordinate bonds or ionic bonds; nitrogenous, oxygenic and sulfuric functional groups with the extremely strong polarity are introduced into the organic ligands, so that the methane adsorption and storage amount of the MOF material can be effectively increased; the metal-organic framework material has a suitable porous channel size being 1.0-2.0nm, a specific surface area being greater than 2000m<2> / g, a pore volume performance and the good heat stability, so that the material can be reused; meanwhile, the material is relatively low in synthetic cost and has the methane absorption and storage amount of 190-210V / V under 3.5MPa. By adopting the metal-organic framework MOF material with the high methane adsorption and storage density, the problems of low methane absorption capacity, high operation pressure and dissatisfactory absorption / desorption rate in the prior art are solved. The metal-organic framework material can be used as an efficient methane adsorbent and is wide in application prospects.

Description

technical field [0001] The invention belongs to the technical field of adsorbents for chemical materials, and in particular relates to a metal-organic framework MOF material with high methane adsorption storage density. Background technique [0002] Natural gas methane is an important energy source, and coal-to-clean methane natural gas technology is an important direction of my country's energy utilization and national strategy. Coal-to-natural gas is based on the characteristics of the domestic energy structure. Through the efficient use of coal and clean and reasonable conversion to produce natural gas, its energy conversion efficiency is much higher than that of coal-to-oil, coal-to-dimethyl ether, coal-to-methanol, and power generation. However, how to efficiently transport large-scale coal-based natural gas is one of the bottleneck problems that need to be solved urgently in the development of this industry. [0003] The storage and transportation of methane by adsorb...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01D53/02C07C309/35C07C303/22C07C205/57C07C201/12C07C65/11C07C51/347C07C63/40C07F15/02C07F5/06C07F5/00C07F9/94C07F15/04
Inventor 朱志荣郝志显李明王凯
Owner TONGJI UNIV
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