Preparation method of yellow brown soil derived porous carbon material

A technology of porous carbon material and yellow-brown soil, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of complex hard template synthesis process, long investment return period, limited production scale, etc., and save preparation costs. , saving preparation time, convenient collection effect

Active Publication Date: 2021-01-01
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the limitation of the "artificial hard template" route is that the synthesis process of these hard templates is complex and time-consuming, resulting in increased preparation costs, limited production scale, and long return on investment period, resulting in most "artificial hard templates" Only in the laboratory research and development stage, it is difficult to introduce to the market

Method used

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  • Preparation method of yellow brown soil derived porous carbon material
  • Preparation method of yellow brown soil derived porous carbon material
  • Preparation method of yellow brown soil derived porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Collect the yellow-brown soil with a surface depth of 10cm in Yangzhou area, remove impurities and dry it at 105°C, grind the blocky sample into powder and pass through a 400-mesh standard sampling sieve to obtain a brown yellow-brown soil fine powder;

[0038] (2) Weigh yellow-brown soil fine powder and white potassium carbonate particles with a mass ratio of 0.5:1, put them into an agate ball mill jar and carry out mechanical ball milling to obtain brown fine powder, wherein the ball milling speed is 400r / min, and the ball milling time is 5h , the brown fine powder is passed through a 500-mesh standard sampling sieve, and stored for subsequent use; 15g of the brown fine powder is placed in a reaction vessel as a hard template material, and 30g of a mass concentration is added to be an ethanol solution of 10wt% resole phenolic resin, and the reaction vessel is opened The brown solid product was obtained by low-temperature heat treatment in the air. The low-temperatu...

Embodiment 2

[0042] (1) Collect the yellow-brown soil with a surface depth of 10cm in Yangzhou area, remove impurities and dry it at 105°C, grind the blocky sample into powder and pass through a 400-mesh standard sampling sieve to obtain a brown yellow-brown soil fine powder;

[0043] (2) Take by weighing the yellow-brown earth fine powder and white potassium carbonate particle that mass ratio is 1:1, put into the agate ball mill jar and carry out mechanical ball milling and obtain brown fine powder, wherein the rotating speed of ball milling is 400r / min, and the ball milling time is 5h, pass the brown fine powder through a 500-mesh standard sampling sieve, and save it for later use; take 15g of the brown fine powder as a hard template material and place it in a reaction vessel, add 30g of a mass concentration of 10wt% ethanol solution of resole phenolic resin, and place it in the reaction vessel The brown solid product was obtained by low-temperature heat treatment in the open air. The low...

Embodiment 3

[0047] (1) Collect the yellow-brown soil with a surface depth of 10cm in Nanjing area, remove impurities and dry it at 105°C, grind the bulk sample into powder and pass through a 400-mesh standard sampling sieve to obtain a brown yellow-brown soil fine powder;

[0048] (2) Weigh yellow-brown soil fine powder and white potassium carbonate particles with a mass ratio of 2:1, put them into an agate ball mill jar for mechanical ball milling to obtain brown fine powder, wherein the ball milling speed is 400r / min, and the ball milling time is 5h , pass through a 500-mesh standard sampling sieve, and save for subsequent use; take 15g of brown fine powder as a hard template material and place it in a reaction vessel, add 30g of a mass concentration of 10wt% ethanol solution of resole phenolic resin, and the reaction vessel is exposed to the air A brown solid product was obtained by low-temperature heat treatment, wherein the low-temperature heat treatment process was: successively kept...

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Abstract

The invention discloses a preparation method of a yellow brown soil derived porous carbon material. The preparation method comprises the following steps: by using yellow brown soil in Yangtze River Delta as the main component of a hard template, synthesizing yellow brown soil derived porous carbon by means of a mechanical ball milling path and a heat treatment technique under the assistance of carbonate, thereby showing a high-graphitization-degree graded porous structure; and rich specific surface area. The selected yellow brown soil not only has the characteristics of rich source, convenience in collection, environmental friendliness and the like, but also can improve the graphitization degree of the porous carbon, and embodies the advantages of recycling, high added value and industrialization; a mixed hard template obtained by the mechanical ball milling path can provide an effective place for constructing the hierarchical porous structure; the microstructure compounded by the two-dimensional carbon layer and the three-dimensional porous carbon skeleton can be adjusted by controlling the mass ratio of the yellow brown soil to the carbonate; and the low-cost carbonate is mainlyused as an activating agent and plays a positive role in the aspect of enhancing the carbon porosity.

Description

technical field [0001] The invention relates to a preparation method of a porous carbon material, in particular to a preparation method of a yellow-brown soil-derived porous carbon material. Background technique [0002] Driven by the needs of important fields such as renewable energy and environmental protection, the preparation of porous carbonaceous materials with well-developed pore structures and tunable surface properties not only reflects scientific and practical values, but is also conducive to future sustainable development. [0003] Nanocasting method (also known as template method), as a synthesis method of porous carbon materials, can effectively realize the precise regulation of templates in the microstructure. Among them, the common "artificial hard template" path mainly relies on carbon precursors to replicate the microstructure of the synthesized template material, and the template skeleton is removed to form a porous carbon material. The "artificial hard te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348C01B32/205
CPCC01B32/205C01B32/318C01B32/348
Inventor 仇实徐晴刘振凌毛宇帅朱警魁钱琛左志芳
Owner YANGZHOU POLYTECHNIC INST
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