Biomass charcoal material and preparation method thereof

A technology of biomass carbon and carbon materials, applied in nano carbon and other directions, can solve the problems of poor plasticity, low specific surface area of ​​easy agglomeration, long production cycle, etc. Fast response time

Inactive Publication Date: 2017-06-13
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, carbon-based materials are prepared from crop waste such as cotton stalks, bagasse, rice husks, tea residues, jujube pits, pomelo peels, and coconut shells. Poor plasticity, easy to agglomerate and low specific surface area

Method used

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  • Biomass charcoal material and preparation method thereof
  • Biomass charcoal material and preparation method thereof
  • Biomass charcoal material and preparation method thereof

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preparation example Construction

[0036] Combustion synthesis is a fast and energy-saving preparation method. Currently, combustion synthesis has been used to synthesize more than 1000 kinds of oxide powders. Based on the physical properties of the reactants and the reaction medium, combustion synthesis can be divided into self-propagating combustion synthesis and solution combustion synthesis. Self-propagating combustion synthesis uses the self-propagating exothermic reaction between reactants to synthesize materials; its biggest feature is that the synthesis process does not require continuous supply of external energy, and once ignited, it can be maintained spontaneously, that is, self-propagating characteristics. The solution combustion method dissolves soluble reactants in water, which can achieve uniform mixing at the molecular level, and the reaction temperature is low; and the reaction speed is fast, which can prevent the agglomeration of generated nanoparticles. Therefore, it is suitable for the prep...

Embodiment 1

[0046] The specific operation steps are as follows:

[0047] (1) Preparation of a carbon source mixed solution: Weigh 10 g of glucose, add it into a beaker filled with 20 ml of deionized water, stir until completely dissolved, and obtain a carbon source mixed solution. (The mass ratio of glucose to carbon source mixed solution is 1:3)

[0048] (2) Preparation of combustion liquid: add 1 g of glycine, 1 ml of 65% nitric acid solution and 1 ml of 25% hydrogen peroxide solution into the beaker, stir evenly and completely dissolve the combustion agent to obtain the combustion liquid. (The mass ratio of biomass carbon source to combustion agent is 1:0.1, the volume of carbon source mixed solution: the volume of oxidant: the volume of blowing agent=20:1:1=1:0.05:0.05)

[0049] (3) Transfer the combustion liquid to a crucible, put it into a muffle furnace preheated to 300°C, calcinate for 30 minutes, continue to heat up to 500°C, calcinate for 60 minutes, take it out and naturally c...

Embodiment 2

[0058] The specific operation steps are as follows:

[0059] (1) Preparation of a carbon source mixed solution: Weigh 10 g of glucose, add it into a beaker filled with 40 ml of deionized water, stir until completely dissolved, and obtain a carbon source mixed solution. (The mass ratio of glucose to carbon source mixed solution is 1:5)

[0060] (2) Preparation of combustion liquid: add 0.5 g of urea, 8 ml of 60% mass fraction of sulfuric acid solution and 1 ml of 40% hydrogen peroxide solution into the beaker, stir evenly and completely dissolve the combustion agent to obtain the combustion liquid. (The mass ratio of biomass carbon source to combustion agent is 10:0.5=1:0.05, the volume of carbon source mixed solution: the volume of oxidant: the volume of blowing agent=40:8:1=1:0.2:0.025)

[0061] (3) Transfer the combustion liquid to a crucible, put it into a muffle furnace preheated to 450°C, calcinate for 10 minutes, continue to heat up to 500°C, calcinate for 3 hours, take...

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Abstract

The invention relates to a biomass carbon material and a preparation method thereof, and relates to the technical field of carbon material preparation. The preparation method comprises the following steps: (1) preparing a carbon source mixed liquid: adding a biomass carbon source into deionized water, stirring evenly to obtain a carbon source mixed liquid; (2) preparing a combustion liquid: adding Combustion agent, oxidant and foaming agent are stirred evenly to obtain combustion liquid; (3) calcining combustion liquid to obtain initial carbon material; (4) washing initial carbon material; (5) drying and washing initial carbon material to obtain the described biochar material. A kind of biomass charcoal material and preparation method described in the present invention adopts the solution combustion method, which is very energy-saving, and can be charcoalized in one step; the preparation method is simple, the preparation period is short, and the reproducibility is good; the prepared biomass charcoal material The nano-thin layer structure is uniform, and the microstructure and specific surface area are good.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, and in particular relates to a biomass carbon material and a preparation method. Background technique [0002] Nano-carbon materials refer to structural carbon materials with at least one dimension less than 100nm in the scale of the dispersed phase, mainly including fullerenes, carbon nanotubes, graphene, and nano-mesoporous carbons. Nano-carbon materials have the characteristics of good stability, high strength, high specific surface area, and abundant sources. They are the most potential new nano-materials. They have been applied in energy and chemical fields such as composite materials, supercapacitors, hydrogen storage materials, and catalysts. It has even become an irreplaceable material in the high-tech field. The national "New Material Industry "Twelfth Five-Year" Development Plan" determined to focus on the development of new functional materials, advanced structural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15
CPCC01P2002/72C01P2004/03C01P2006/12C01P2006/14C01P2006/16C01P2006/17
Inventor 代斌祁佩荣王超于锋
Owner SHIHEZI UNIVERSITY
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