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Metal organic skeleton-graphite oxide nano composite adsorption material and preparing method thereof

A metal-organic framework and nanocomposite technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low atomic arrangement density and low physical adsorption force of alkane molecules, and achieve excellent cycle performance, easy desorption and regeneration. , the effect of high porosity

Active Publication Date: 2012-02-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the pore structure of this type of material and the low density of atomic arrangement in the open pore space, its physical adsorption force on alkane molecules is relatively small.

Method used

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  • Metal organic skeleton-graphite oxide nano composite adsorption material and preparing method thereof
  • Metal organic skeleton-graphite oxide nano composite adsorption material and preparing method thereof
  • Metal organic skeleton-graphite oxide nano composite adsorption material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 2.395g Cr(NO 3 ) 3 9H 2 O and 1.988g of terephthalic acid were dissolved in 43mL of deionized water; while stirring, 0.26mL of hydrofluoric acid with a mass concentration of 40% was added dropwise, then 0.2192g of graphite oxide was added, and placed on a magnetic stirrer and stirred for 30min to obtain a reaction Then pour the reaction solution into a stainless steel high-pressure reaction kettle, seal it, and put it into a temperature-programmed furnace for hydrothermal reaction. After constant temperature for 8 hours, the solution was lowered to 25°C at a cooling rate of 0.4°C / min; after the reaction was completed, the precipitates were washed with water and ethanol in turn, centrifuged at 5000r / min for 40min, and the lower layer was dried in an oven at 100°C After 10 hours, the metal-organic framework-graphite oxide nanocomposite adsorption material was obtained.

Embodiment 2

[0031] 2.395g Cr(NO 3 ) 3 9H 2 O and 0.994g of terephthalic acid were dissolved in 30mL of deionized water; while stirring, 0.13mL of hydrofluoric acid with a mass concentration of 40% was added dropwise, then 0.3389g of graphite oxide was added, and placed on a magnetic stirrer and stirred for 35min to obtain a reaction Then pour the reaction solution into a stainless steel high-pressure reaction kettle, seal it and put it into a temperature-programmed furnace for hydrothermal reaction. After constant temperature for 8 hours, the solution was lowered to 35°C at a cooling rate of 1°C / min; after the reaction was completed, the precipitates were washed with water and ethanol in turn, centrifuged at 7000r / min for 30min, and the lower layer was dried in an oven at 130°C 8h, the metal-organic framework-graphite oxide nanocomposite adsorption material was obtained.

Embodiment 3

[0033] 2.395g Cr(NO 3 ) 3 9H 2 O and 0.994g of terephthalic acid were dissolved in 30mL of deionized water; while stirring, 0.13mL of hydrofluoric acid with a mass concentration of 40% was added dropwise, then 0.5084g of graphite oxide was added, and placed on a magnetic stirrer and stirred for 30min to obtain a reaction Then pour the reaction solution into a stainless steel high-pressure reaction kettle, seal it and put it into a temperature-programmed furnace for hydrothermal reaction. After constant temperature for 9 hours, the solution was lowered to 35°C at a cooling rate of 0.4°C / min; after the reaction was completed, the precipitates were washed with water and ethanol in sequence, centrifuged at 5000r / min for 40min, and the lower layer was dried in an oven at 130°C 8h, the metal-organic framework-graphite oxide nanocomposite adsorption material was obtained.

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Abstract

The invention discloses a metal organic skeleton-graphite oxide nano composite adsorption material and a preparing method thereof. The material is composed of graphite oxide and chromium-based metal organic skeleton. The preparing method of the material comprises the following steps of: dissolving chromium nitrate and terephthalic acid in deionized water, stirring and simultaneously adding hydrofluoric acid dropwise, then adding graphite oxide and uniformly stirring to obtain reaction liquid, and conducting hydro-thermal reaction under program temperature controlling; and after sequentially conducting washing with water and washing with ethanol for the decomposed materials, centrifuging, drying and obtaining the metal organic skeleton-graphite oxide nano composite adsorption material. Theadsorption capacity of the adsorption material for hydrocarbon volatile organic matters is greatly increased, and the adsorption material is easy for desorption and regeneration. The preparing methodhas simple process and low cost.

Description

technical field [0001] The invention belongs to the technical field of volatile organic matter treatment, and relates to an adsorption material for volatile organic matter and a preparation method thereof, in particular to a metal-organic framework-graphite oxide nanocomposite adsorption material for absorbing volatile organic matter and a preparation method thereof. Background technique [0002] Volatile Organic Compounds (Volatile Organic Compounds, referred to as: VOCs) pollution has become an important source of air pollution. In recent years, with the rapid development of my country's social economy and the rapid increase in the number of motor vehicles, the consumption of oil products has also increased rapidly. In the process of oil refining, storage, transportation and refueling, gaseous hydrocarbon volatile organic compounds will inevitably be produced. , whose main components are hydrocarbon compounds, mainly including C 3 ~C 7 alkanes, naphthenes, aromatics and a...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/22
Inventor 夏启斌李忠奚红霞
Owner SOUTH CHINA UNIV OF TECH
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