Waste plastic derived nano-porous carbon material as well as preparation method and application thereof

A technology of nanoporous carbon and waste plastics, applied in the direction of nanocarbon, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of increased preparation costs, environmental hazards, and complicated processes, so as to avoid equipment loss and Effects of waste acid treatment, avoiding corrosion, and simple process

Pending Publication Date: 2022-07-08
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method obtains a nitrogen-enriched carbon material, the process is complicated and requires the assistance of various activators to complete the preparation, which not only increases the preparation cost, but also brings certain problems to the equipment due to the use of activators. Corrosion
At the same time, under the condition of 100-300 ℃, the dechlorination of chlorine-containing polymeric organic substances will inevitably produce organic substances such as chlorinated dioxins, which will bring great harm to the environment without effective treatment.

Method used

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  • Waste plastic derived nano-porous carbon material as well as preparation method and application thereof
  • Waste plastic derived nano-porous carbon material as well as preparation method and application thereof
  • Waste plastic derived nano-porous carbon material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 The preparation method of waste plastic-derived nanoporous carbon material specifically includes the following steps:

[0032] (1) get a polyvinyl chloride waste plastic handbag and put it into a crusher for crushing to obtain polyvinyl chloride waste plastic powder;

[0033] (2) Weigh 10g of melamine and 10g of polyvinyl chloride waste plastic powder respectively in a ball mill jar, add 20mL of N,N-dimethylformamide and 200g of stainless steel balls, and ball-mill at 500 rpm for 4h to obtain a mixed product ;

[0034] (3) Washing the mixed product with deionized water and drying at 100 °C for 10 h to obtain a porous carbon precursor;

[0035] (4) Put the porous carbon precursor into a tube furnace, and under a nitrogen atmosphere (the flow rate of nitrogen is 50 mL / min, and the inert gas conditions of Example 3-8 are the same), the temperature is raised to 600 ° C at a heating rate of 5 ° C / min After calcining for 2 hours, naturally cooled to room temper...

Embodiment 2

[0036] Embodiment 2 The preparation method of waste plastic-derived nanoporous carbon material specifically comprises the following steps:

[0037] (1) get a polyvinyl chloride waste plastic handbag and put it into a crusher for crushing to obtain polyvinyl chloride waste plastic powder;

[0038] (2) respectively weighing 5g melamine and 10g polyvinyl chloride waste plastic powder in a ball mill jar, adding 20mL tetrahydrofuran, adding 225g stainless steel balls, then ball milling at 600 rpm for 2h to obtain a mixed product;

[0039] (3) Washing the mixed product with deionized water and drying at 80 °C for 12 h to obtain a porous carbon precursor;

[0040] (4) Put the porous carbon precursor into a tube furnace, under a helium gas atmosphere (the flow rate of helium gas is 100mL / min), heat up to 900°C for 1 h at a heating rate of 10°C / min, and cool to room temperature naturally, That is, a nanoporous carbon material derived from polyvinyl chloride waste plastic is obtained, ...

Embodiment 3

[0041] Embodiment 3 The preparation method of waste plastic-derived nanoporous carbon material specifically includes the following steps:

[0042] (1) get a polyvinyl chloride waste plastic handbag and put it into a crusher for crushing to obtain polyvinyl chloride waste plastic powder;

[0043] (2) Weigh 20g of melamine and 10g of polyvinyl chloride waste plastic powder respectively in a ball mill jar, add 20mL of N,N-dimethylformamide, add 300g of stainless steel balls, and then ball-mill at 500 rpm for 4h to obtain a mixed solution product;

[0044] (3) Washing the mixed product with deionized water and drying at 100 °C for 10 h to obtain a porous carbon precursor;

[0045] (4) Put the porous carbon precursor into a tube furnace, heat it up to 600 °C for 2 h at a heating rate of 8 °C / min under a nitrogen atmosphere, and cool it to room temperature naturally to obtain nanoporous carbon derived from polyvinyl chloride waste plastics. Material, carbon yield: 11.5%, nitrogen ...

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Abstract

The invention discloses a waste plastic derived nano porous carbon material and a preparation method and application thereof.The preparation method comprises the steps that waste plastic is crushed into powder, the powder, a solvent and melamine are added into a ball milling tank to be subjected to a grinding reaction, a porous carbon precursor mixture is obtained, the mixture is washed with deionized water and dried, and a porous carbon precursor is obtained; and carrying out heat treatment on the porous carbon precursor at a certain temperature under the protection of an inert atmosphere, and cooling to room temperature to obtain the waste plastic derived nano-porous carbon material. According to the waste plastic derived nano-porous carbon material and the preparation method thereof, waste can be turned into wealth, the production process is simple, a green and environment-friendly technology is achieved, the national policy about waste resource utilization is met, and the prepared nano-porous carbon material is rich in nitrogen element, has defects and is suitable for industrial production. The catalyst can meet the requirement when being used as the catalyst, can be used for producing vinyl chloride monomers by a calcium carbide method, and can also be used as a capacitor and an electrode material-based adsorption material.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a waste plastic-derived nanoporous carbon material and a preparation method thereof. The waste plastic is used as a precursor, and a nitrogen-rich and nitrogen-rich carbon material is obtained by grinding and carbonization with the aid of melamine. Defect-derived nanoporous carbon materials. Background technique [0002] Halogen-containing waste plastics are one of the most produced and widely used plastics in the world, and are widely used in infrastructure, packaging, electrical and service industries. As a typical waste plastic, polyvinyl chloride (PVC), in 2020, my country's total production of polyvinyl chloride will reach 20.74 million tons, and the apparent consumption will be 21.07 million tons, ranking first in the world. However, with the sharp increase in the consumption of halogen-containing waste plastic products and the continuous enhancement...

Claims

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Application Information

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IPC IPC(8): C01B32/15B01J20/20B01J20/30B01J21/18B01J35/10C07C17/08C07C21/06B82Y30/00B82Y40/00
CPCC01B32/15B01J21/18C07C17/08B01J20/205B82Y30/00B82Y40/00B01J35/60B01J35/40C07C21/06Y02W30/62
Inventor 李瑛魏抒豪邱一洋蓝国钧韩文锋唐浩东
Owner ZHEJIANG UNIV OF TECH
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