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Modified activated carbon composite material and preparation method thereof

A technology of composite materials and activated carbon, applied in separation methods, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve problems such as no antibacterial effect, achieve improved adsorption capacity, effective degradation, enhanced The effect of adsorption capacity

Inactive Publication Date: 2020-09-01
吴丹妮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the patent does not have antibacterial effect

Method used

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  • Modified activated carbon composite material and preparation method thereof

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Embodiment 1

[0029] A preparation method of modified activated carbon composite material, comprising the following steps:

[0030] Step A, put the vermiculite in dilute sulfuric acid with a concentration of 10%, soak it for 14 hours, then put it in an oven and dry it for 20 minutes, then heat treat it at 560°C for 1 hour, crush and screen the particles with a particle size of 100 mesh to 200 mesh, and obtain pre-treated vermiculite;

[0031] Step B, mix coconut shell and sawdust at a weight ratio of 1:4, under the protection of nitrogen, first raise the temperature to 200°C at a rate of 1.0°C / min, keep the temperature for 20min, and then raise the temperature to 650°C at a rate of 3.5°C / min Cracking reaction for 2.5 hours, after crushing to 100 mesh to 200 mesh, biochar is obtained;

[0032] Step C, mixing the biochar obtained in step B with sodium hydroxide at a weight ratio of 1:1.5, treating at 680°C for 90 minutes under a nitrogen atmosphere, washing with water until neutral, and dryi...

Embodiment 2

[0037] A preparation method of modified activated carbon composite material, comprising the following steps:

[0038] Step A, put the vermiculite in dilute sulfuric acid with a concentration of 12%, soak it for 16 hours, then put it in an oven and dry it for 20 minutes, then heat treat it at 500°C for 1 hour, crush and screen the particles with a particle size of 100 mesh to 200 mesh, and obtain pre-treated vermiculite;

[0039] Step B, mix coconut shell and wood chips at a weight ratio of 1:3, under the protection of nitrogen, first raise the temperature to 200°C at a rate of 1.0°C / min, keep the temperature for 35min, and then raise the temperature to 600°C at a rate of 3.5°C / min Cracking reaction for 2.0 hours, after crushing to 100 mesh to 200 mesh, biochar is obtained;

[0040] Step C, mixing the biochar obtained in step B with sodium hydroxide at a weight ratio of 1:1.5, treating at 680°C for 70 minutes under a nitrogen atmosphere, washing with water until neutral, and d...

Embodiment 3

[0045] A preparation method of modified activated carbon composite material, comprising the following steps:

[0046]Step A, put the vermiculite in dilute sulfuric acid with a concentration of 14%, soak it for 12 hours, then put it in an oven and dry it for 20 minutes, then heat treat it at 580°C for 1 hour, crush and screen the particles with a particle size of 100 mesh to 200 mesh, and obtain pre-treated vermiculite;

[0047] Step B, mix coconut shell and wood chips at a weight ratio of 1:2.5, under the protection of nitrogen, first raise the temperature to 200°C at a rate of 1.0°C / min, keep the temperature for 30min, and then raise the temperature to 750°C at a rate of 3.5°C / min Cracking reaction for 3 hours, crushing to 100 mesh to 200 mesh, to obtain biochar;

[0048] Step C, mixing the biochar obtained in step B with sodium hydroxide at a weight ratio of 1:1.5, treating it at 680°C for 60 minutes under a nitrogen atmosphere, washing with water to neutrality, and drying ...

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Abstract

The invention discloses a preparation method of a modified activated carbon composite material. The preparation method comprises the following steps: A, soaking vermiculite in dilute sulfuric acid, drying in an oven, and carrying out heat treatment; B, mixing coconut shells and wood chips, and carrying out heating cracking to obtain charcoal; C, mixing biochar with sodium hydroxide, and performinghigh-temperature treatment to obtain activated carbon; D, mixing and ball-milling the pretreated vermiculite, activated carbon and expanded graphite to obtain mixed powder; E, dropwise adding butyl titanate and nitric acid into absolute ethyl alcohol, stirring for reacting, and then adding the mixed powder to obtain a mixed solution; and F, carrying out vacuum drying on the mixed solution to obtain the modified activated carbon composite material. According to the prepared modified activated carbon composite material, activated carbon is mixed in the process of preparing nanometer titanium dioxide, the adsorption capacity of the activated carbon to harmful gas is enhanced; and in addition, the nanometer titanium dioxide has certain sterilization and bacteriostasis capacity, and the purification effect is improved.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a modified activated carbon composite material and a preparation method thereof. Background technique [0002] Indoor pollutants mainly include formaldehyde, benzene, ammonia, TVOC, etc. Although the concentration is not high, the human body will seriously endanger human health if the human body is in this environment for a long time. At present, there are two main methods to remove indoor pollutants: one is adsorption The second method is to use porous substances with adsorption capacity (such as activated carbon, diatomaceous earth, etc.) to transfer pollutants from the gas phase to the adsorbent; the other is the photocatalytic purification method, which uses photocatalysts to produce pollutants under ultraviolet or visible light irradiation. Holes have the ability to oxidize and decompose, and can decompose organic pollutants into inorganic substances such as carb...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02C01B32/348C01B32/324C01G23/053B82Y30/00B01J21/06B01J21/18B01D53/86
CPCB01J20/20B01J20/12B01D53/02C01B32/348C01B32/324C01G23/053B82Y30/00B01J21/063B01J21/18B01D53/86C01P2004/80B01D2258/06B01J35/39
Inventor 吴丹妮
Owner 吴丹妮
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