Preparation method of graphene oxide-loaded asphalt-based activated carbon composite material

A composite material and graphene technology, applied in chemical instruments and methods, coking carbonaceous materials, petroleum industry, etc., can solve the problems of unfavorable stirring, difficulty in graphene oxide loading, high viscosity, etc., to improve thermal conductivity and pore size distribution Uniform, energy-intensive effect

Active Publication Date: 2021-06-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has high viscosity in the molten state of asphalt, which is not conducive to stirring, and it is not easy for graphene oxide to be well loaded on activated carbon.

Method used

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  • Preparation method of graphene oxide-loaded asphalt-based activated carbon composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A pitch-based activated carbon composite material loaded with graphene oxide, consisting of 100g deionized water, 15g pitch particles, 45gKOH, 0.15g coupling agent, 0.48g emulsifier, 0.0075g dispersant and 0.015g graphene oxide.

[0032] Preparation method: as figure 1 As shown, the emulsifier, asphalt, and water are selected according to the above contents, and the emulsified asphalt with good performance is prepared at a temperature of 55°C. Dissolving KOH in distilled water, and then adding the dissolved KOH aqueous solution to graphene oxide and a dispersant to prepare a stable dispersion containing an activator. Then mix it with emulsified asphalt, add coupling agent, stir and heat until viscous KOH / GO / emulsified asphalt mixture is obtained. Put the prepared KOH / GO / emulsified asphalt mixture into a tube-type resistance furnace, pass high-purity nitrogen into the furnace, make the entire carbonization environment in a nitrogen atmosphere, set the heating rate of 5°...

Embodiment 2

[0034] A pitch-based activated carbon composite material loaded with graphene oxide, consisting of 100g deionized water, 15g pitch particles, 45gKOH, 0.15g coupling agent, 0.48g emulsifier, 0.0075g dispersant and 0.03g graphene oxide.

[0035] Preparation method: Select emulsifier, asphalt, and water according to the above content, and prepare emulsified asphalt with good performance at a temperature of 60°C. Dissolving KOH in distilled water, and then adding the dissolved KOH aqueous solution to graphene oxide and a dispersant to prepare a stable dispersion containing an activator. Then mix it with emulsified asphalt, add coupling agent, stir and heat until viscous KOH / GO / emulsified asphalt mixture is obtained. Put the prepared KOH / GO / emulsified asphalt mixture into a tube-type resistance furnace, pass high-purity nitrogen into the furnace, make the entire carbonization environment in a nitrogen atmosphere, set the heating rate of 5°C / min for heating, and raise the temperatur...

Embodiment 3

[0037] A pitch-based activated carbon composite material loaded with graphene oxide, consisting of 100g deionized water, 15g pitch particles, 45gKOH, 0.15g coupling agent, 0.48g emulsifier, 0.0075g dispersant and 0.075g graphene oxide.

[0038]Preparation method: Select emulsifier, asphalt, and water according to the above contents, and prepare emulsified asphalt with good performance at a temperature of 58°C. Dissolving KOH in distilled water, and then adding the dissolved KOH aqueous solution to graphene oxide and a dispersant to prepare a stable dispersion containing an activator. Then mix it with emulsified asphalt, add coupling agent, stir and heat until viscous KOH / GO / emulsified asphalt mixture is obtained. Put the prepared KOH / GO / emulsified asphalt mixture into a tube-type resistance furnace, pass high-purity nitrogen into the furnace, make the entire carbonization environment in a nitrogen atmosphere, set the heating rate of 5°C / min for heating, and raise the temperatu...

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Abstract

The invention discloses a preparation method of a graphene oxide-loaded asphalt-based activated carbon composite material, which comprises the following steps: shearing or grinding asphalt particles, adding an emulsifier, and uniformly dispersing in water to prepare emulsified asphalt; dissolving KOH in distilled water, and adding graphene oxide and a dispersing agent to prepare a graphene oxide stable dispersion liquid containing an activating agent; mixing the emulsified asphalt and the graphene oxide stable dispersion liquid, adding a coupling agent, heating, and evaporating to obtain a KOH / GO / emulsified asphalt mixture; carrying out carbonization treatment on the KOH / GO / emulsified asphalt mixture; and washing and drying the graphene oxide-loaded asphalt-based activated carbon obtained by carbonization. According to the method, the activated carbon-graphene oxide composite material with controllable pore diameter and adjustable heat conduction is realized, so that the technical bottlenecks of an adsorption / desorption process with low heat conductivity coefficient, high desorption and regeneration difficulty, low efficiency, high energy consumption and short service life of activated carbon are broken through.

Description

technical field [0001] The invention relates to a preparation method of a pitch-based activated carbon composite material loaded with graphene oxide, and belongs to the technical field of composite material preparation. Background technique [0002] As a large amount of by-products produced in the refining process of crude oil, especially heavy crude oil, bitumen is expected to replace coal as an ideal raw material for activated carbon due to its high carbon content and low volatile content. The preparation of activated carbon materials from bitumen can meet the needs of preparing high-performance activated carbon and solve the high value-added utilization of heavy crude oil, which will become one of the research hotspots in the field of carbon science. [0003] Using emulsified pitch as the carbon source and KOH as the activator, the activated carbon material prepared has the characteristics of high specific surface area, many pores and uniform distribution. [0004] Graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C10B55/00C10B57/00
CPCB01J20/20C10B55/00C10B57/00C10B57/045B01J2220/4812
Inventor 黄维秋朱嘉慧浮历沛李旭飞孙宪航朱兵
Owner CHANGZHOU UNIV
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