A kind of composite adsorbent used for vocs purification in reagent cabinet and preparation method thereof

A composite adsorption and reagent cabinet technology, which is applied in chemical instruments and methods, separation methods, and other chemical processes, can solve the problems of low ignition point and inapplicability, and achieve the effects of increasing adsorption capacity, improving adsorption efficiency, and high porosity

Active Publication Date: 2022-03-22
NINGBO SHENGGUANG INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used reagent cabinets need to have the characteristics of explosion-proof and high temperature resistance, and traditional activated carbon adsorbents are not suitable for the treatment of ketone-containing VOCs in the narrow storage space of reagent cabinets due to their low ignition point. Therefore, there is an urgent need for traditional activated carbon Modification of other adsorbent materials to improve the refractory properties of the adsorbent, or use other new adsorbents such as MOFs materials to further improve the adsorption efficiency and adsorption capacity of the adsorbent, etc.

Method used

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  • A kind of composite adsorbent used for vocs purification in reagent cabinet and preparation method thereof
  • A kind of composite adsorbent used for vocs purification in reagent cabinet and preparation method thereof
  • A kind of composite adsorbent used for vocs purification in reagent cabinet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) 250g of Fe(NO 3 ) 3 9H 2 O, 250g of Mn(NO 3 ) 2 4H 2 O and 50 g of ZrCl 4 Put in a 2L beaker, add 500mL of 0.01mol / L hydrochloric acid solution, stir to dissolve, add 500mL of DMF and shake well, then add 100g of 3-aminoterephthalic acid, react at 100°C for 24h, after centrifugation The crude product was obtained, washed twice with 300 mL of DMF and 300 mL of absolute ethanol, and finally dried in vacuum at room temperature to obtain MOFs material A.

[0040] (2) Mix 1kg activated alumina, 0.8kg activated carbon and 0.5kg kaolin, take by weighing 15g indole acetic acid and dissolve it in 1000mL ethanol to make a concentration of 15g / L indole acetic acid ethanol solution, every 100g activated alumina, A mixture of activated carbon and kaolin was added to 30 mL of indole acetic acid ethanol solution, sealed and stirred in a water bath at 80 °C for 24 h, and then the remaining liquid was blown off with nitrogen to obtain a mixture B.

[0041] (3) Mix MOFs materi...

Embodiment 2

[0052] (1) 250g of Fe(NO 3 ) 3 9H 2 O, 200g of Mn(NO 3 ) 2 4H 2 O and 30 g of ZrCl 4 Put in a 2L beaker, add 500mL of 0.01mol / L hydrochloric acid solution, stir to dissolve, add 500mL of DMF and shake well, then add 80g of 3-aminoterephthalic acid, react at 100°C for 24h, after centrifugation The crude product was obtained, washed twice with 300 mL of DMF and 300 mL of absolute ethanol, and finally dried in vacuum at room temperature to obtain MOFs material A.

[0053] (2) Mix 1.5kg of activated alumina, 0.7kg of activated carbon and 0.6kg of kaolin, weigh 2.5g of indole acetic acid and dissolve it in 100mL of ethanol to form an indole acetic acid ethanol solution with a concentration of 2.5g / 100mL. A mixture of alumina, activated carbon, and kaolin was added to 35 mL of indole acetic acid ethanol solution, sealed and stirred in a water bath at 70°C for 24 hours, and then the remaining liquid was blown off with nitrogen to obtain mixture B.

[0054] (3) Mix MOFs materia...

Embodiment 3

[0056] (1) 250g of Fe(NO 3 ) 3 9H 2 O, 375g of Mn(NO 3 ) 2 4H 2 O and 250 g of ZrCl 4 Put in a 2L beaker, add 500mL of 0.01mol / L hydrochloric acid solution, stir to dissolve, add 500mL of DMF and shake well, then add 250g of 3-aminoterephthalic acid, react at 100°C for 24h, after centrifugation The crude product was obtained, washed twice with 500 mL of DMF and 500 mL of absolute ethanol, and finally dried in vacuum at room temperature to obtain MOFs material A.

[0057] (2) Mix 1.2kg activated alumina, 2kg activated carbon and 0.4kg kaolin, weigh 3g of 2-methylquinoline and dissolve it in 100mL ethanol to make a 2-methylquinoline ethanol solution with a concentration of 3g / 100mL For every 100 g of activated alumina, activated carbon, and kaolin mixture, 50 mL of 2-methylquinoline ethanol solution was added, sealed and stirred in a water bath at 50 °C for 36 h, and then the remaining liquid was blown off with nitrogen to obtain a mixture B.

[0058] (3) Mix MOFs materia...

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Abstract

The invention discloses a composite adsorbent used for purifying VOCs in a reagent cabinet and a preparation method thereof, belonging to the technical field of adsorbents. In the present invention, MOFs material A is mixed with mixture B, and a composite adsorbent is obtained after baking, and MOFs material A is Fe(NO 3 ) 3 9H 2 O, Mn(NO 3 ) 2 4H 2 O and ZrCl 4 After mixing, it is dissolved in the mixed solution of hydrochloric acid and DMF, and it is obtained after adding aminophthalic acid for reaction; the mixture B is obtained by mixing activated alumina, activated carbon and kaolin and adding them to the ethanol solution of nitrogen-containing heterocyclic compounds. Through the preparation method of the present invention, the overall porosity, specific surface area and refractory characteristics of the adsorbent are improved, and the adsorption efficiency and adsorption capacity of the composite adsorbent to VOCs are also improved, which can be used for common halogenated hydrocarbons in reagent cabinets, Efficient adsorption and removal of VOCs such as benzene, ethers, ketones, alcohols, etc.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a composite adsorbent used for purifying VOCs in a reagent cabinet and a preparation method thereof. Background technique [0002] VOCs (Volatile Organic Compounds) usually refer to organic compounds that are easily volatile at room temperature. According to the category of organic compounds, they can be divided into halogenated hydrocarbons, benzenes, lipids, ethers, ketones, alcohols, organic amines, etc. Chemical reagents, especially low-boiling organic chemical reagents (such as chloroform, carbon tetrachloride, benzene, toluene, ethyl acetate, ether, acetone, methyl ethyl ketone, methanol, ethanol, triethylamine, etc.) often have a small amount of Volatilization, resulting in higher air VOCs inside the reagent cabinet and storage room. Adsorption is a simple and practical VOCs treatment technology, and it is also an effective measure for VOCs governance. [0003] The co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01J20/20B01J20/226B01J20/08B01J20/12B01J20/22B01D53/02B01D2257/708Y02A50/20
Inventor 江鹏
Owner NINGBO SHENGGUANG INSTR CO LTD
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