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Method for preparing amorphous carbon nano tube and SBA-15 mesoporous molecular sieve from attapulgite clay as template and raw material

A technology of attapulgite clay and mesoporous molecular sieve, which is applied in the directions of carbon nanotubes, molecular sieve compounds, chemical instruments and methods, etc., can solve the problems of HF toxicity, corrosiveness, environmental pollution, and the inability of silicon components to be effectively utilized, etc. Effective utilization and reduction of environmental pollution

Active Publication Date: 2014-06-18
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The HF used in the above method is poisonous and highly corrosive, and its leaching waste liquid also pollutes the environment to a certain extent, and at the same time, the silicon component in the attapulgite clay cannot be effectively utilized.

Method used

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  • Method for preparing amorphous carbon nano tube and SBA-15 mesoporous molecular sieve from attapulgite clay as template and raw material
  • Method for preparing amorphous carbon nano tube and SBA-15 mesoporous molecular sieve from attapulgite clay as template and raw material
  • Method for preparing amorphous carbon nano tube and SBA-15 mesoporous molecular sieve from attapulgite clay as template and raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Prepare amorphous carbon nanotubes and SBA-15 mesoporous molecular sieves according to the following steps

[0016] (1) Add 10g of attapulgite clay to 50mL of 3mol / L hydrochloric acid solution, transfer it to a reaction kettle lined with polytetrafluoroethylene, treat at 180°C for 18h, suction filter, wash with water, and dry to obtain acidified attapulgite clay , then put 1.5g of acidified attapulgite clay on a polytetrafluoroethylene tray and place it in a reaction kettle, pre-add 1.5g of furfuryl alcohol into the kettle, seal it and treat it at 130°C for 6h, take it out and put it in a porcelain crucible, and put it in a protective N in the atmosphere furnace 2 Carbonization at 800°C for 2 hours under protection to obtain C-attapulgite clay composite material;

[0017] (2) Add the obtained C-attapulgite clay composite material into 24mL1.8mol / L NaOH solution, stir evenly, then transfer to a reaction kettle, seal and treat at 180°C for 18h, and filter w...

Embodiment 2

[0019] Embodiment 2: Prepare amorphous carbon nanotubes and SBA-15 mesoporous molecular sieves according to the following steps

[0020] (1) Add 10g of attapulgite clay to 40mL of 4mol / L hydrochloric acid solution, transfer it to a reaction kettle lined with polytetrafluoroethylene, treat at 180°C for 15h, filter with suction, wash with water, and dry to obtain acidified attapulgite clay , then put 1.5g of acidified attapulgite clay on a polytetrafluoroethylene tray and place it in a reaction kettle, add 1.5g of furfuryl alcohol to the kettle, treat it at 130°C for 4.5h after sealing, take it out and put it in a porcelain crucible, Protective atmosphere furnace N 2 Carbonization at 700°C for 3 hours under protection to obtain C-attapulgite clay composite material;

[0021] (2) Add the obtained C-attapulgite clay composite material into 24mL2mol / L NaOH solution, stir evenly, then transfer it to a reaction kettle, seal it and treat it at 180°C for 15h, and filter it with suctio...

Embodiment 3

[0023] Embodiment 3: Prepare amorphous carbon nanotubes and SBA-15 mesoporous molecular sieves according to the following steps

[0024] (1) Add 10g of attapulgite clay to 30mL of 5mol / L hydrochloric acid solution, transfer it to a reaction kettle lined with polytetrafluoroethylene, treat at 180°C for 12h, suction filter, wash with water, and dry to obtain acidified attapulgite clay , then put 1.5g of acidified attapulgite clay on a polytetrafluoroethylene tray, place it in a reaction kettle, pre-add 1.5g of furfuryl alcohol into the kettle, seal it and treat it at 130°C for 3h, take it out and put it in a porcelain crucible, and put it in a protective N in the atmosphere furnace 2 Carbonization at 600°C for 4 hours under protection to obtain C-attapulgite clay composite material;

[0025] (2) Add the obtained C-attapulgite clay composite material into 24mL2.2mol / L NaOH solution, stir evenly, then transfer to the reaction kettle, seal and treat at 180°C for 12h, and filter wi...

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Abstract

The invention discloses a method for preparing an amorphous carbon nano tube and an SBA-15 mesoporous molecular sieve by using attapulgite clay as a template and a raw material. The method comprises the following steps: firstly soaking attapulgite clay in a high-temperature hot acid solution, carrying out vapor deposition polymerization and carbonization on furfuryl alcohol serving as a raw material to load a carbon material on the surfaces of acidified attapulgite grains; then, carrying out high-temperature alkaline leaching to remove the template (attapulgite clay), washing with hot water, and drying to obtain the amorphous carbon nano tube; and finally, adding P123-containing acid liquor to alkaline leachate, and carrying out hydrothermal crystallization, suction filtration, washing with ethyl alcohol, washing with water, drying and calcining to obtain the SBA-15 mesoporous molecular sieve. According to the method disclosed by the invention, HF (Hydrogen fluoride) with corrosivity is not required, so that the environmental pollution caused by waste liquid discharge is reduced; meanwhile, the leachate is used for preparing the SBA-15 mesoporous molecular sieve, so that the effective utilization of silicon component in the attapulgite clay is realized.

Description

technical field [0001] The invention relates to a method for preparing amorphous carbon nanotubes and SBA-15 mesoporous molecular sieves, specifically a method for synchronously preparing amorphous carbon nanotubes and SBA-15 mesoporous molecular sieves using attapulgite clay as a template and raw materials . Background technique [0002] Carbon nanotubes have the advantages of small size, large specific surface area, high mechanical strength, electrical conductivity and strong interface effect, and have broad application prospects in the fields of catalysis, adsorption separation, electrode materials, and energy storage materials. Carbon nanotubes are divided into two types: crystalline and amorphous. The wall of crystalline carbon nanotubes is formed by well-crystallized single-layer or multi-layer cylindrical graphite sheets, while the wall of amorphous carbon nanotubes is composed of randomly arranged carbon atoms, which is easy to chemically modify. It has good applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B37/00B82Y30/00B82Y40/00C01B32/16
Inventor 蒋金龙许莹固旭程中罡
Owner HUAWEI TEHCHNOLOGIES CO LTD
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