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Method for preparing sulfur-doped carbon material from biomass

A biomass, sulfur doping technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problem of no rapid pyrolysis, and achieve the effect of reducing processing time, wide source, and less time-consuming

Pending Publication Date: 2020-11-20
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Obviously, the method involved in the above-mentioned patent adopts a direct mixed doping method of sulfur, which is different from the pre-modification doping method adopted in this patent, neither pretreatment method nor rapid pyrolysis is used.

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  • Method for preparing sulfur-doped carbon material from biomass
  • Method for preparing sulfur-doped carbon material from biomass
  • Method for preparing sulfur-doped carbon material from biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] In this example, four different types of biomass, namely cellulose, glucose, sawdust, and waste paper, were selected for crushing, and 5 g of the above-mentioned biomass particles were weighed for use, and sulfur-doped carbon was prepared according to the following preparation method Material;

[0058] A method for preparing sulfur-doped carbon materials from biomass, comprising the following steps:

[0059] Step 1, crushing the biomass into fine particles;

[0060] Step 2, selecting 5 g of the pulverized biomass particles and mixing them with sulfuric acid solution at a ratio of 1:1 by sulfur / carbon mass ratio to form a homogeneous mixture,

[0061] Step 3, put the mixture into a hydrothermal reaction kettle with a volume of 100ml, seal the reaction kettle and place it in an oven at 200°C for 12 hours;

[0062] Step 4. After the hydrothermal reaction, take out the reaction kettle, and after the reaction kettle is cooled to room temperature, transfer the hydrothermal ...

Embodiment 2

[0068] In this embodiment, the influence of different sulfur sources and acid sources on the properties of boron-doped biomass carbon materials was tested, only the types of sulfur sources and acid sources were changed, and the amount of added acid sources was used to control the pH<3 of the solution, and follow the steps below The preparation method prepares the material;

[0069] A method for preparing sulfur-doped carbon materials from biomass, comprising the following steps:

[0070] Step 1, crushing the sawdust biomass into fine particles;

[0071] Step 2, selecting 5 g of the pulverized biomass particles and mixing them with a sulfuric acid solution at a ratio of 1:1 by sulfur / carbon mass ratio to form a homogeneous mixture;

[0072] Step 3, put the mixture into a hydrothermal reaction kettle with a volume of 100ml, seal the reaction kettle and place it in an oven at 200°C for 12 hours;

[0073] Step 4. After the hydrothermal reaction, take out the reaction kettle, and...

Embodiment 3

[0079] In this example, the influence of different sulfur-carbon ratios on the properties of sulfur-doped carbon materials was tested, only the ratio of sulfur-carbon was changed, and the materials were prepared according to the following preparation method;

[0080] A method for preparing sulfur-doped carbon materials from biomass, comprising the following steps:

[0081] Step 1, crushing the sawdust biomass into fine particles;

[0082] Step 2, selecting 5 g of the pulverized biomass particles and sulfuric acid solution to mix according to the ratio of 0.05:1, 0.2:1, 1:1, 4:1 according to the sulfur / carbon mass ratio to form a uniform mixture;

[0083] Step 3, put the mixture into a hydrothermal reaction kettle with a volume of 100ml, seal the reaction kettle and place it in an oven at 200°C for 12 hours;

[0084] Step 4. After the hydrothermal reaction, take out the reaction kettle, and after the reaction kettle is cooled to room temperature, transfer the hydrothermal prod...

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Abstract

The invention relates to a method for preparing a sulfur-doped carbon material from biomass. The method comprises the following steps: firstly, crushing biomass into tiny particles; uniformly mixing the crushed biomass particles with a sulfuric acid-containing solution according to a certain ratio to form a mixture, putting the mixture into a hydrothermal reaction kettle, carrying out hydrothermalreaction at a certain temperature, dehydrating and drying hydrothermal carbon obtained after the hydrothermal reaction, putting the dried hydrothermal carbon into a pyrolyzing furnace, and carrying out rapid pyrolysis at a certain temperature under the protection of an inert atmosphere to obtain the sulfur-doped carbon material subjected to rapid pyrolysis; biomass raw materials used in the method are forestry and agricultural residues, are wide in source and can be regenerated; the method is simple in process, low in time consumption and suitable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the field of preparing sulfur-doped carbon materials, especially the field of preparing sulfur-doped carbon materials from biomass. Background technique [0002] The diversification of carbon material structures and its excellent energy storage, adsorption, loading, and catalytic properties have attracted the attention and research of many scientists; carbon materials prepared from biomass, especially high-performance carbon materials, can generate high value-added adsorption materials or soil amendment materials, considered to be one of the most efficient ways to utilize biomass. In recent years, research on sulfur-doped carbon materials has increased, and compared with pure carbon materials, supercapacitors and field emission devices made of sulfur-doped carbon materials have broad application prospects. In addition, the surface of sulfur-doped carbon materials has more active sites and good hydrophilicity, which makes them ...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/342C01B32/348C01B32/318
CPCC01B32/324C01B32/342C01B32/348C01B32/318C01P2002/85C01P2004/04C01P2006/12C01P2002/80
Inventor 马培勇黄瑞毅张颖刘小好林凤飞祁风雷邢献军
Owner HEFEI UNIV OF TECH
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