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A multi-component doped hierarchical porous carbon material and its preparation method

A technology of hierarchical pores and carbon materials, applied in the field of composite materials, can solve the problems of single heteroatom doping type, low heteroatom doping ratio, complicated preparation process, etc., to achieve diversity, increase doping ratio, simple craftsmanship

Active Publication Date: 2020-07-07
四川金时新能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, there are mainly the following problems in the preparation process of hierarchical porous carbon materials: first, the preparation process of hierarchical porous carbon materials is complicated and the cost is high; second, the heterogeneous atoms of hierarchical porous carbon materials The doping ratio is low; third, the type of heteroatom doping is single; fourth, the atmosphere of heterogeneous elements is easy to cause environmental pollution

Method used

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  • A multi-component doped hierarchical porous carbon material and its preparation method
  • A multi-component doped hierarchical porous carbon material and its preparation method
  • A multi-component doped hierarchical porous carbon material and its preparation method

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preparation example Construction

[0018] The embodiment of the present invention proposes a method for preparing a multi-component doped hierarchical porous carbon material, which includes:

[0019] The alkaline lignin is directly heat-treated.

[0020] It should be noted that the preparation method of the multi-component doped hierarchical porous carbon material provided by the embodiment of the present invention converts alkaline lignin in situ into a multi-component doped hierarchical porous carbon material through direct heat treatment, which not only makes the multi-component doped hierarchical porous carbon material The porous carbon material forms a hierarchical pore structure and achieves a high proportion of heteroatom doping. Therefore, the preparation method of the multi-component doped hierarchical porous carbon material provided by the embodiment of the present invention is not only simple in process, low in preparation cost, and less in environmental pollution, but also can realize the diversity ...

Embodiment 1

[0034] This embodiment provides a method for preparing a multi-component doped hierarchical porous carbon material, the preparation process of which is as follows:

[0035] Alkaline lignin derived from papermaking waste liquid is used as raw material, and heat treatment is directly carried out under the protection of inert gas nitrogen. Among them, the specific heat treatment process is: first raise the temperature from room temperature to 400°C at a heating rate of 2°C / min, keep the temperature for one hour, then raise the temperature to 600°C at a heating rate of 4°C / min, keep the temperature constant for one hour, and finally cool at room temperature That's it.

[0036] This embodiment also provides a multi-element doped hierarchical porous carbon material, which is prepared by the preparation method of multi-element doped hierarchical porous carbon material introduced in this embodiment.

Embodiment 2

[0038] This embodiment provides a method for preparing a multi-component doped hierarchical porous carbon material, the preparation process of which is as follows:

[0039] Alkaline lignin derived from papermaking waste liquid is used as raw material, and heat treatment is directly carried out under the protection of inert gas nitrogen. Among them, the specific heat treatment process is: first raise the temperature from room temperature to 400°C at a heating rate of 2°C / min, keep the temperature for one hour, then raise the temperature to 700°C at a heating rate of 4°C / min, keep the temperature constant for one hour, and finally cool at room temperature That's it.

[0040] This embodiment also provides a multi-element doped hierarchical porous carbon material, which is prepared by the preparation method of multi-element doped hierarchical porous carbon material introduced in this embodiment.

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Abstract

The invention discloses a multi-element doped hierarchical porous carbon material and preparation method thereof, and mainly relates to the field of the composite material. The preparation method of the multi-element doped hierarchical porous carbon material comprises the step of synthesizing multi-element doped hierarchical porous carbon material by performing in-situ transformation on alkali lignin from papermaking waste liquor through a direct thermal treatment way, the waste is turned into wealth to acquire the biomass-based carbon material with the hierarchical hole structure, and the high proportion doping of heteroatom in the hierarchical porous carbon material is realized. Therefore, the preparation method of the multi-element doped hierarchical porous carbon material disclosed bythe invention is simple in process, low in preparation cost, and small in environment pollution; the diversity of the doping atom can be realized, and the doping proportion of the heteroatom in the hierarchal porous carbon material can be improved, and the multi-element doped hierarchical porous carbon material has important popularization and application value.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a multi-component doped hierarchical porous carbon material and a preparation method thereof. Background technique [0002] In the prior art, there are mainly the following problems in the preparation process of hierarchical porous carbon materials: first, the preparation process of hierarchical porous carbon materials is complicated and the cost is high; second, the heterogeneous atoms of hierarchical porous carbon materials The doping ratio is low; third, the type of heteroatom doping is single; fourth, the atmosphere of heterogeneous elements is easy to cause environmental pollution. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a multi-component doped hierarchical porous carbon material. The preparation process is simple, the cost is low, and the environmental pollution is small. Atom doping ratio. [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
Inventor 刘芳延杨维清张海涛
Owner 四川金时新能科技有限公司
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