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A kind of super-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 complex preparation process, high doping ratio of heteroatoms, low doping ratio of heteroatoms, etc., and achieves simple process, high doping ratio, important The effect of promoting application value

Active Publication Date: 2019-12-27
四川金时新能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a super-doped hierarchical porous carbon material, which proposes a one-step heat treatment method for alkaline lignin in view of the disadvantages of the current hierarchical porous carbon preparation process complexity and low doping ratio of heterogeneous atoms , in-situ synthesis of heterogeneous element super-doped functional carbon materials with hierarchical pore structure, the whole process is simple to prepare, the proportion of heteroatom doping is high, and the expected effect is achieved

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  • A kind of super-doped hierarchical porous carbon material and its preparation method
  • A kind of super-doped hierarchical porous carbon material and its preparation method
  • A kind of super-doped hierarchical porous carbon material and its preparation method

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preparation example Construction

[0020] A method for preparing a super-doped hierarchical porous carbon material provided by an embodiment of the present invention, which includes:

[0021] The alkaline lignin is placed in a doping atmosphere for heat treatment.

[0022] It should be noted that, the preparation method of a hyper-doped hierarchical porous carbon material provided by the embodiment of the present invention realizes variable The purpose of turning waste into treasure, and the prepared hyper-doped hierarchical porous carbon material has a higher doping ratio.

[0023] Further, in the embodiment of the present invention, during the heat treatment process, the heat treatment temperature is 400-1200° C., and the heat treatment time is 0.1-10 h.

[0024] It should be noted that the reason why the embodiments of the present invention limit the temperature and time during the heat treatment process is that the heat treatment temperature and time are not conducive to obtaining the product with the targ...

Embodiment 1

[0033] This embodiment provides a method for preparing a super-doped hierarchical porous carbon material, the preparation process of which is as follows:

[0034] The basic lignin in the papermaking waste residue is placed in a doping atmosphere for heat treatment, specifically, the doping atmosphere includes an inert gas argon and a doping gas ammonia, wherein the heat treatment temperature is 700° C., and the heat treatment time is 2 hours.

[0035] This embodiment also provides a super-doped hierarchical porous carbon material, which is prepared by the preparation method of the super-doped hierarchical porous carbon material introduced in this embodiment.

Embodiment 2

[0037] This embodiment provides a method for preparing a super-doped hierarchical porous carbon material, the preparation process of which is as follows:

[0038] The basic lignin in the papermaking waste residue is placed in a doping atmosphere for heat treatment, specifically, the doping atmosphere includes an inert gas argon and a doping gas oxygen, wherein the heat treatment temperature is 400° C., and the heat treatment time is 2 hours.

[0039] This embodiment also provides a super-doped hierarchical porous carbon material, which is prepared by the preparation method of the super-doped hierarchical porous carbon material introduced in this embodiment.

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Abstract

The invention discloses a super doping layered pore carbon material and a preparation method thereof, and mainly relates to the field of composite materials. The preparation method of the super dopinglayered pore carbon material comprises the steps that alkaline lignin is in-situ converted and synthesized to be the super doping layered pore carbon material through a directly thermal treatment mode, not only is the super doping layered pore carbon material formed the layered pore structure finally, and meanwhile, the atom doping proportion reaches 10-30 at% as well. By arranging different doping gases to serve as components of doping atmosphere, the layered pore carbon material can obtain different doping elements; and by conducting adjustment on thermal treatment parameters of the different doping elements, the super doping layered pore carbon material with the heteroatoms and the pore structure being controllable is achieved. Therefore, the preparation method of the super doping layered pore carbon material is simple in technology, and the prepared super doping layered pore carbon material has the relatively high doping ratio, and therefore the super doping layered pore carbon material has the important popularization and application value.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a super-doped hierarchical porous carbon material and a preparation method thereof. Background technique [0002] There are currently two main problems in the preparation process of hierarchical porous carbon materials in the prior art: first, the preparation process of hierarchical porous carbon materials is complicated; second, the doping ratio of heteroatoms in hierarchical porous carbon materials is low For example, the doping ratio of nitrogen element in hierarchical porous carbon is approximately 3-10 at%. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a super-doped hierarchical porous carbon material, which proposes a one-step heat treatment method for alkaline lignin in view of the disadvantages of the current complex preparation process of hierarchical porous carbon and the low doping ratio of heterogeneou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
Inventor 张海涛刘芳延王子兴杨维清苏海高育育
Owner 四川金时新能科技有限公司