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Preparation method and application of carbon nanospheres

A nano-carbon ball, hydrolysis reaction technology, applied in nano-carbon, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of difficulty in forming uniform particle size, no system, economical and effective, etc.

Active Publication Date: 2020-08-04
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lignocellulose hardly forms charcoal spheres during the HTC process, and it is more difficult to form uniform particle sizes
Therefore, the characteristics of nano-carbon spheres are affected by different raw materials and preparation methods. At present, there is no systematic, economical and effective method for preparing nano-carbon spheres from biomass materials.

Method used

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  • Preparation method and application of carbon nanospheres
  • Preparation method and application of carbon nanospheres
  • Preparation method and application of carbon nanospheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of nano carbon spheres, comprising the steps of:

[0038] Ordinary commercial straws, the straws are elephant grass, reed straws, wheat straws and corn straws, which are processed separately. The treatment conditions are: drying in an oven at 40°C, then pulverizing with a pulverizer and passing through a 20-mesh sieve to prepare into powder; the powder is uniformly mixed with LiBr-HCl solution to prepare a mixture, the molar concentration of HCl in the LiBr-HCl solution is 0.5M, and the mixture includes components as powder by weight ratio: LiBr: water=5 :57:38, add the mixture into the pressure melting bomb, put the pressure melting bomb into the oven, control the heating rate to 2°C / min, heat up to the reaction temperature of 140°C, keep the temperature constant for 150min, and then cool down to 50°C ℃, take the pressure bomb out of the oven, and wait until the temperature drops to room temperature; use a sand core funnel to separate the solid fro...

Embodiment 2

[0040] A preparation method of nano carbon spheres, comprising the steps of:

[0041] Ordinary commercial straws, the straws are elephant grass, reed straws, wheat straws and corn straws, which are processed separately. The treatment conditions are: drying in an oven at 40°C, then pulverizing with a pulverizer and passing through a 20-mesh sieve to prepare into powder; the powder is uniformly mixed with LiBr-HCl solution to prepare a mixture, the molar concentration of HCl in the LiBr-HCl solution is 0.5M, and the mixture includes components as powder by weight: LiBr: water=10 :54:36, add the mixture into the pressure melting bomb, put the pressure melting bomb into the oven, control the heating rate to 2°C / min, heat up to the reaction temperature of 120°C, keep the temperature for 90min, and then cool down to 50°C, take the pressure melting bomb out of the oven, and wait until the temperature drops to room temperature; use a sand core funnel to separate the solid from the rea...

Embodiment 3

[0043] A preparation method of nano carbon spheres, comprising the steps of:

[0044]Ordinary commercial straws, the straws are elephant grass, reed straws, wheat straws and corn straws, which are processed separately. The treatment conditions are: drying in an oven at 40°C, then pulverizing with a pulverizer and passing through a 20-mesh sieve to prepare into powder; the powder is uniformly mixed with LiBr-HCl solution to prepare a mixture, the molar concentration of HCl in the LiBr-HCl solution is 0.5M, and the mixture includes components as powder by weight: LiBr: water=20 :48:32, add the mixture into the pressure melting bomb, put the pressure melting bomb into the oven, control the heating rate to 2°C / min, heat up to the reaction temperature of 140°C, keep the temperature for 120min, and then cool down to 50°C, take the pressure melting bomb out of the oven, and wait until the temperature drops to room temperature; use a sand core funnel to separate the solid from the rea...

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Abstract

The invention discloses a preparation method of nano carbon spheres, and the method comprises the following steps: crop straw crushing, acidic lithium bromide hydrolysis, charcoal separation, drying and the like to obtain the nano carbon spheres. Compared with the prior art, the nano carbon spheres have the advantages that the reaction activity is higher, and the application potential is higher, particularly, the carbon nanospheres prepared by treating pennisetum purpureum are uniform and dispersed, the diameter is about 100 nm, and the application potential is wider.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and in particular relates to a preparation method and application of nano carbon spheres. Background technique [0002] At present, there are many reports on the preparation of biochar, and the structures of the prepared biochar are various. There are many factors in the preparation process that will cause the difference in the structure of the biochar, such as raw material composition, preparation conditions, post-processing conditions and other factors. [0003] Functional carbon materials with nanoscale spherical, linear, tubular, and capsule structures are widely used as templates, catalyst supports, electrode materials, and composite materials. [0004] Due to its isotropy, stable chemical properties, well-developed pores, and good biocompatibility, nanocarbon spheres have important applications in the fields of energy storage, catalysis, adsorption, and drug loading. [0005] F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/162B01J20/20B01J20/28B01J20/30C02F1/28C02F101/22
CPCC01B32/15B01J20/205B01J20/28016B01J20/28057B01J20/2808B01J20/28054C02F1/283C02F2101/22
Inventor 夏涛卢宪芹
Owner QILU UNIV OF TECH
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