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Gas adsorbing material and preparation method thereof

A gas adsorption and slurry technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of secondary pollution, unsuitable indoor environment, waste, etc.

Inactive Publication Date: 2019-01-22
SHANDONG OBO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, simple activated carbon adsorption is physical adsorption, and the adsorbed harmful substances are easy to desorb.
At present, in order to improve the ability of activated carbon to purify the air, some researches use catalysts to modify activated carbon to achieve air purification, but most of the catalysts are heavy metals or precious metals, which are easy to cause secondary pollution or waste; most catalysts also need ultraviolet radiation to work, which is not suitable for indoor environment

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  • Gas adsorbing material and preparation method thereof
  • Gas adsorbing material and preparation method thereof
  • Gas adsorbing material and preparation method thereof

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preparation example Construction

[0067] The present invention also provides a method for preparing a gas adsorption material, comprising the following steps:

[0068] A) After mixing the graphene oxide aqueous solution, adhesive, solidified binder and expansion agent, the slurry is obtained;

[0069] B) After kneading the slurry obtained in the above steps with activated carbon, a mixture is obtained;

[0070] C) After the intermediate product obtained in the above steps is granulated, the gas adsorbent material is obtained.

[0071] In the above-mentioned preparation method of the present invention, the selection and ratio of the materials and their preferred ranges are consistent with the selection and ratio of the materials in the aforementioned gas adsorption materials and their preferred ranges, and will not be repeated here.

[0072] In the present invention, the slurry is obtained by firstly mixing the graphene oxide aqueous solution, the binder, the solidified binder and the expansion agent.

[0073...

Embodiment 1

[0110] Graphene oxide aqueous solution dispersion: put 100 parts of graphene oxide aqueous solution in an ultrasonic disperser, and ultrasonically disperse 40mim.

[0111] Adhesive preparation: Add 3 parts of adhesive (CMC), 6 parts of curing binder (acrylic acid), and 2 parts of expansion agent (potassium bicarbonate, calculated by the amount of bicarbonate) to the dispersed graphene oxide aqueous solution , and fully stirred at high speed to disperse the raw materials evenly to obtain a slurry.

[0112] Material kneading: add 81 parts of activated carbon to the kneader, add 91% of the binder, and knead at a high speed until the activated carbon powder disappears and becomes particles with a particle size of 1-5mm; then add 5% of the binder agent, kneading at a high speed until the particle size of the material is 10-15 mm; finally adding the remaining binder, kneading at a high speed until the material forms a large mass to obtain a mixture.

[0113] see figure 1 , figure...

Embodiment 2

[0122] Graphene oxide aqueous solution dispersion: put 240 parts of graphene oxide aqueous solution in an ultrasonic disperser, and ultrasonically disperse 40mim.

[0123] Adhesive preparation: Add 6 parts of adhesive (CMC), 9 parts of curing adhesive (acrylic acid), and 3.5 parts of expansion agent (sodium bicarbonate) into the dispersed graphene oxide aqueous solution, and stir fully at high speed to make The raw materials are uniformly dispersed to obtain a slurry.

[0124] Material kneading: add 79.5 parts of activated carbon to the kneader, add 89% of the binder, and knead at a high speed until the activated carbon powder disappears and becomes particles with a particle size of 1-5mm; then add 4% of the binder agent, kneading at a high speed until the particle size of the material is 10-15 mm; finally adding the remaining binder, kneading at a high speed until the material forms a large mass to obtain a mixture.

[0125] Granulation: Add the kneaded mixture into the gran...

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Abstract

The invention provides a gas adsorbing material. The gas adsorbing material is prepared from 100 to 300 parts by weight of an aqueous graphene oxide solution and 79 to 81 parts by weight of activatedcarbon. According to the invention, the form of the aqueous graphene oxide solution is adopted for mixing with the activated carbon, so the activated carbon is enhanced in toxic substance adsorption capacity and particularly has strong capacity in adsorbing benzenes and polar molecules; moreover, the aqueous graphene oxide solution is directly used as a raw material, so the quality of graphene oxide can be ensured, and production is simplified. The graphene oxide / activated carbon gas adsorbing material for air purification provided by the invention has enhanced adsorption capacity compared with pure granular activated carbon and especially has obvious adsorption effect on benzenes and polar molecules; and the prepared material and a preparation method thereof are environmentally friendly,and the method is simple in process and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of gas adsorption materials, and relates to a gas adsorption material and a preparation method thereof, in particular to a granular graphene oxide / activated carbon gas adsorption material and a preparation method thereof. Background technique [0002] Adsorbent, also known as absorbent, can make active ingredients adhere to the surface of its particles, and turn liquid trace compound additives into solid compounds, which is conducive to uniform mixing. solid matter. Adsorbents generally have the following characteristics: large specific surface, suitable pore structure and surface structure; strong adsorption capacity for adsorbate; generally do not chemically react with adsorbate and medium; easy to manufacture and easy to regenerate; excellent Adsorptive and mechanical properties. [0003] Adsorbents can be classified according to pore size, particle shape, chemical composition, surface polarity, etc., s...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/7027B01D2258/06B01J20/20B01J20/28016B01J20/2803
Inventor 赵永彬张在忠陈巍钱陆明程金杰
Owner SHANDONG OBO NEW MATERIAL CO LTD
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