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Low-cost preparation process for preparing three-dimensional porous graphene

A three-dimensional porous, preparation process technology, applied in the field of carbon nanomaterials, can solve the problems of expensive carbon powder and rising prices

Pending Publication Date: 2021-09-14
辽宁聚泰鑫新材料研究有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main raw material for the preparation of graphene and its derivatives is carbon powder, but the price of carbo

Method used

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  • Low-cost preparation process for preparing three-dimensional porous graphene
  • Low-cost preparation process for preparing three-dimensional porous graphene
  • Low-cost preparation process for preparing three-dimensional porous graphene

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Process for preparing a three-dimensional porous graphene produced at low cost, comprises the steps of:

[0036] Step 1, selected from the gangue anthracite, bituminous, sub-bituminous, lignite one kind of coal or coal residues in various combinations source.

[0037] Step 2, the selected source coal gangue residues mechanically pulverized coal.

[0038] Step 3, the organic component is separated from the mineral components and residual flotation of coal pulverized coal source.

[0039] The wet powder grinding step 4 the organic component, the isolated to 200-500 mesh.

[0040] Step 5, adding nanoscale organic component catalyst blend milled to obtain a homogeneous mixture wherein the mass ratio of the catalyst with the organic component is 0.1: 1.

[0041] Step 6, the above-described mixture was treated at a high temperature 2000-3000 ℃ 1-24h, processing charged purity nitrogen or high purity argon shielding gas, it graphitization.

[0042] Step 7, 1 part by mass of an orga...

Example Embodiment

[0052] Example 1.

[0053] Anthracite after taking the residue after mechanical comminution selected organic and mineral components float with carbon tetrachloride, the organic component of the obtained wet ground to 500 mesh powder without added iron powder catalyst 1: 0.1 mixed mass ratio of ball milling. Then placed in a graphite furnace temperature of 9h 2000 ℃. Take 40g 1g graphitized material and the concentrated sulfuric acid, concentrated phosphoric acid 6g, was stirred under ice-cooling conditions, mix well, then add 30g of potassium permanganate, the reaction 90min at 30 deg.] C environment. 50g of deionized water was added, the reaction was continued at 90 ℃ 15min, followed by addition of 7g of hydrogen peroxide, stir until golden brown, washing it by centrifugation, and broken by the ultrasonic shear graphene oxide to obtain a uniform suspension. The graphene oxide, the graphene oxide powder solution was dried in vacuo for 24h to obtain a sieve of 500 mesh to obtain. T...

Example Embodiment

[0054] Example 2.

[0055] After the organic and mineral components selected after mechanical pulverization residue was taken with chloroform floating bituminous, wet ground to 500 mesh powder to the organic component obtained without addition of the catalyst, the iron to 1: 0.1 by mass ratio mixed by a ball mill. Then placed in a graphite furnace temperature of 9h 2000 ℃. Take 50g 1g graphitized material and the concentrated sulfuric acid, 8g concentrated phosphoric acid, stirred under ice-cooling conditions, mix well, then add 40g of potassium permanganate, the reaction 90min at 40 ℃ environment. 50g of deionized water was added, the reaction was continued at 90 ℃ 15min, then 9g of hydrogen peroxide, stir until golden brown, washing it by centrifugation, and broken by the ultrasonic shear graphene oxide to obtain a uniform solution. The obtained graphene oxide through 500 mesh sieve to obtain graphene oxide powder after drying in vacuo 24h. Weigh 0.3g graphene oxide powder, 0.45...

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Abstract

The invention belongs to the field of carbon nanomaterials, and particularly relates to a low-cost preparation process for preparing three-dimensional porous graphene. According to the invention, the selected carbon source takes the waste coal gangue as a basic raw material so that resource reutilization of the waste coal gangue is realized, materials can be saved, and energy consumption can be reduced. The metal catalyst is added, so that the graphitization process is accelerated, the graphite temperature is reduced, the graphitization degree is increased, the interlayer spacing is increased, intercalation is easier, and the quality of graphene obtained by stripping is higher. In-situ self-assembly is carried out by using a graphene oxide aqueous solution as a precursor, so that stacking among graphene sheet layers is effectively reduced, and excellent performance of graphene is retained. The three-dimensional porous graphene with relatively high quality is prepared by adopting a low-cost preparation process and a low-cost carbon source, and can be prepared in a large scale so that research and development of downstream products such as pollutant adsorption, resistance type gas sensors, lithium ion batteries, supercapacitors, modified cement concrete and the like are facilitated.

Description

Technical field [0001] The present invention belongs to the field of carbon nano material, particularly relates to a preparation process of preparing a low-cost three-dimensional porous graphene. Background technique [0002] In 2004, Andre Geim and Konstantin Novoselov first peeling graphene from graphite, which is a conjugate sp 2 Hybrid material infinite two-dimensional six-membered ring C atoms form a unit to form a covalent bond. Graphene is considered to be the basic unit of all other dimensions of the carbon nanomaterial, may be wrapped into a zero-dimensional Shearer rich body, curled into a carbon nanotube-dimensional, three-dimensional stacked graphite. Graphene has the highest (1.0TPa) strength, maximum tensile strength (130 GPa and), the maximum specific surface area (2630 m 2 / G) and the like. Further, the electron mobility of graphene at room temperature up to 15000cm 2 / V, high thermal conductivity 3000-5000w / (m · K). Graphene, with its excellent performance at...

Claims

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Application Information

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IPC IPC(8): C01B32/19C01B32/198C01B32/205B01J21/18
CPCC01B32/19C01B32/198C01B32/205B01J21/18C01B2204/32
Inventor 付莹王荣政孔祥清张婷婷王学志郭峰瑞傅强孙艳
Owner 辽宁聚泰鑫新材料研究有限公司
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