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Mg-MOFs monocrystalline absorption material and preparation method and application thereof

An adsorption material, single crystal technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problem of destroying the pore structure, surface active sites and surface chemical properties of activated carbon materials, cumbersome preparation process, and difficult activation. and other problems, to achieve excellent adsorption effect, simple preparation process, and the effect of increasing activity.

Active Publication Date: 2020-11-24
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the adsorption materials reported in the literature mainly include activated carbon and its modified materials and molecular sieves. Among them, the preparation process of activated carbon and its modified materials is relatively cumbersome, and its adsorption performance is greatly affected by the carbonization time. In the process of carbonization, not only is it easy to cause graphitization of amorphous fixed carbon, which leads to difficulty in activation, but also destroys the internal pore structure, surface active sites and surface chemical properties of activated carbon materials, reducing the adsorption capacity.
There are energy loss and environmental pollution problems in the preparation process of molecular sieves, the cost is relatively expensive, and it cannot be used for adsorption under strong acid / strong alkali conditions, resulting in low purification efficiency

Method used

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  • Mg-MOFs monocrystalline absorption material and preparation method and application thereof
  • Mg-MOFs monocrystalline absorption material and preparation method and application thereof
  • Mg-MOFs monocrystalline absorption material and preparation method and application thereof

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Embodiment 1

[0073] This embodiment provides a kind of Mg-MOFs ([Mg(Bpdc)(DMF) 2 ] n ) A preparation method for a single crystal adsorption material, comprising the following steps:

[0074] S1. Grind magnesium chloride into powder with a mortar, mix 2,2'-bipyridine-4,4'-dicarboxylic acid and magnesium chloride at a molar ratio of 2:5, add 5mL of DMF, stir well to obtain a mixed solution, put Ultrasound into the ultrasound machine for 30 minutes;

[0075] Wherein, the ratio of the volume of DMF to the amount of 2,2'-bipyridine-4,4'-dicarboxylic acid is 20:1mL / mmol;

[0076] S2. After sealing the mixed solution of S1 in the inner liner of the reactor, place the reactor in an electric blast drying oven (SY101BS-OD-C-CX), raise the temperature to 120°C at 30°C / h, and keep it warm for 48h. Then cool down to 30°C at 2.5°C / h;

[0077] S3. Wash the reaction product of S2 with DMF for 3-5 times, then observe and screen the Mg-MOFs adsorption material with a specific structure under a microscop...

Embodiment 2

[0104] The present embodiment provides a kind of [Mg(Bpdc)(DMF) 2 ] n A method for preparing a single crystal adsorption material, comprising the following steps:

[0105] S1. Grind magnesium chloride into powder with a mortar, mix 2,2'-bipyridine-4,4'-dicarboxylic acid and magnesium chloride at a molar ratio of 1:10, add DMF, stir well, and obtain a mixed solution, put Ultrasound in the ultrasound machine for 30 minutes;

[0106] The ratio of the volume of DMF to the amount of 2,2'-bipyridyl-4,4'-dicarboxylic acid is 20:1mL / mmol;

[0107] S2. After sealing the mixed solution of S1 in the inner liner of the reactor, place the reactor in an electric blast drying oven (SY101BS-OD-C-CX), raise the temperature to 120°C at 30°C / h, and keep it warm for 48h. Then cool down to 30°C at 2.5°C / h;

[0108] S3. Wash the reaction product of S2 with DMF for 3-5 times, then observe and screen the Mg-MOFs adsorption material with a specific structure under a microscope, pick crystals with ...

Embodiment 3

[0110] The present embodiment provides a kind of [Mg(Bpdc)(DMF) 2 ] n A method for preparing a single crystal adsorption material, comprising the following steps:

[0111] S1. Grind magnesium chloride into powder with a mortar, mix 2,2'-bipyridine-4,4'-dicarboxylic acid and magnesium chloride at a molar ratio of 4:5, add DMF, stir well, and obtain a mixed solution, put Ultrasound in the ultrasound machine for 30 minutes;

[0112] The ratio of the volume of DMF to the amount of 2,2'-bipyridyl-4,4'-dicarboxylic acid is 20:1mL / mmol;

[0113] S2. After sealing the mixed solution of S1 in the inner liner of the reactor, place the reactor in an electric blast drying oven (SY101BS-OD-C-CX), raise the temperature to 120°C at 30°C / h, and keep it warm for 48h. Then cool down to 30°C at 2.5°C / h;

[0114] S3. Wash the reaction product of S2 with DMF for 3-5 times, then observe and screen the Mg-MOFs adsorption material with a specific structure under a microscope, pick crystals with r...

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Abstract

The invention provides a Mg-MOFs monocrystalline absorption material and a preparation method and application thereof. A structural formula of the Mg-MOFs monocrystalline absorption material is [Mg(Bpdc)(DMF)2]n, wherein Bpdc is 2,2'-dipyridyl-4-4'-dicarboxylic acid, DMF is N,N-dimethyl formamide, n is a natural number, and n is greater than or equal to 1. The invention further provides a preparation method of the Mg-MOFs monocrystalline absorption material and application of the Mg-MOFs monocrystalline absorption material to absorption for VOCs gas discharged in the wood drying process. The Mg-MOFs monocrystalline absorption material provided by the invention shows an excellent absorption effect on VOCs gas such as specific benzene, beta-pinene, carbon tetrachloride, alpha-pinene and thelike discharged by woods such as pinus sylvestris in China in the high-temperature / normal-temperature drying process, and has high purifying efficiency.

Description

technical field [0001] The invention relates to a Mg-MOFs single crystal adsorption material and its preparation method and application, belonging to the technical field of VOCs gas adsorption. Background technique [0002] Volatile organic compounds (volatile organic compounds, VOCs) refer to volatile organic compounds with a boiling point lower than 260°C and a saturated vapor pressure greater than 133.322Pa at normal temperature and pressure, which have the characteristics of strong volatility, irritation and toxicity , is currently a major inducing factor of human carcinogenesis. [0003] Wood often releases specific VOCs gas pollutants during normal temperature or high temperature drying, such as terpenoids (α-pinene, β-pinene, myrcene, camphene, etc.), non-terpenes (tetrachloride carbon, aromatic hydrocarbons, carboxylic acids, formaldehyde, acetaldehyde, etc.), etc. Among them, for α-pinene, inhalation, ingestion or absorption through the skin will cause harm to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/226B01J20/28059B01J20/28078B01J20/3085B01D53/02B01D2253/204B01D2257/708Y02A50/20
Inventor 张晓涛左娅王喜明李淑静刘哲辰赵浩田高建鹏冯泽明
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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