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A kind of preparation method of activated carbon mesoporous silicon composite material

A technology of composite materials and mesoporous silicon, applied in the direction of separation methods, chemical instruments and methods, alkali metal compounds, etc., can solve the problems of complex reaction process, difficult operation, environmental acidification, etc., and achieve simple production process, improved desulfurization effect, Strong adsorption effect

Active Publication Date: 2021-11-23
TAIYUAN UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The annual increase of flue gas emissions has caused serious air pollution, especially the SO 2 Lead to the formation of acid rain, serious environmental acidification, and adverse effects on human health
There are some desulfurization methods in the prior art, but there are defects that the reaction process is complicated, it is not easy to operate, and some desulfurization materials cannot be recycled

Method used

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  • A kind of preparation method of activated carbon mesoporous silicon composite material

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Effect test

Embodiment 1

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

[0038] (1) Stir and mix 2kg of wood flour and 2kg of phosphoric acid, keep stirring and place it in a drying oven at a temperature of 150-200°C for aging for 1-2 hours until the wood flour has plasticity to obtain the primary material of wood activated carbon;

[0039] (2) Dissolve 20g of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer in 200ml of distilled water, then add 60ml of hydrochloric acid solution with a solubility of 2mol / L and stir for 2 hours, then 45 g of tetraethyl orthosilicate was added and stirred for 15 minutes, after which the resulting mixture was vigorously stirred at a temperature of 40°C for 24 hours, after which it was aged at a temperature of 100°C for 24 hours, and finally the resulting product was filtered to obtain a solid The product is the primary material of mesoporous silicon;

[0040](3) Knead t...

Embodiment 2

[0042] A preparation method of activated carbon mesoporous silicon composite material, comprising the following steps:

[0043] (1) Stir and mix 2kg of wood flour and 3kg of phosphoric acid, keep stirring and place it in a drying oven at a temperature of 150-200°C for aging for 1-2 hours until the wood flour has plasticity to obtain the primary material of wood activated carbon;

[0044] (2) Dissolve 20g of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer in 200ml of distilled water, then add 60ml of hydrochloric acid solution with a solubility of 2mol / L and stir for 2 hours, then 50 g of tetraethyl orthosilicate was added and stirred for 15 minutes, after which the resulting mixture was vigorously stirred at a temperature of 40° C. for 24 hours, after which it was aged at a temperature of 100° C. for 24 hours, and finally the resulting product was filtered to obtain a solid The product is the primary material of mesoporous silicon;

[0045] (3) Kn...

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Abstract

The invention discloses a method for preparing an activated carbon mesoporous silicon composite material. The process is as follows: kneading the pretreated wooden activated carbon raw material and the mesoporous silicon raw material on a kneader, and then using a piston extrusion granulator to produce Sample 1 with a particle size of 2-5mm, pre-drying the sample 1 to harden the sample 1, and then setting the sample 2 for 8-36 hours to obtain the sample 2, and activating the sample 2, the activation atmosphere is oxygen concentration Less than 2%, the time is 0.5-2 hours to obtain sample three, rinse the sample three, and then dry at 120 ° C to obtain activated carbon mesoporous silicon composite material, which can effectively solve the problem of single adsorption capacity The problem can greatly improve the desulfurization effect.

Description

technical field [0001] The invention relates to the technical field of air pollution purification and desulfurization, in particular to a preparation method of an activated carbon mesoporous silicon composite material. Background technique [0002] With the development of economy and the acceleration of industrialization, environmental problems are increasingly concerned and valued by people. The annual increase of flue gas emissions has caused serious air pollution, especially the SO 2 It leads to the formation of acid rain, serious environmental acidification, and adverse effects on human health. There are some desulfurization methods in the prior art, but there are defects in that the reaction process is complicated, it is not easy to operate, and some desulfurization materials cannot be recycled. Therefore, it is urgent to develop a renewable and efficient desulfurization material. How to optimize the desulfurization synchronous treatment system to achieve low cost and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/302B01D2258/0283B01J20/10B01J20/20B01J20/28083
Inventor 张国杰张琪琦刘俊李俊华刘晓庆王影张永发臧鹏超
Owner TAIYUAN UNIV OF TECH
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