Low temperature hydrothermal preparation method of biomass carbon microsphere / nanosphere

A biomass carbon, nanosphere technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as unfavorable large-scale industrial production, unfavorable energy saving, safety issues, etc. The effect of rich oxygen-containing functional groups, high safety, and low hydrothermal carbonization temperature
CN104649246AInactive Publication Date: 2015-05-27HUNAN NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN NORMAL UNIVERSITY
Publication Date
2015-05-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a low temperature hydrothermal preparation method of alkali catalysis or Lewis acid / proton acid catalysis biomass. The method is as below: adding a certain amount of biomass, deionized water and a proper amount of alkali or Lewis acid / protonic acid into carbide carbon of biomass to a teflon inner liner, stirring to dissolve soluble biomass, filling into a stainless steel reaction kettle, and placing in an oven and reacting for a while at preset temperature, and reacting insoluble biomass in a device equipped with a heating sleeve and a thermostat magnetic stirrer under the preset temperature, wherein the reaction conditions are as below: temperature of 110-160 DEG C (preferably 120-140 DEG C) and reaction time of 6-72 h (preferably 12-36 h); naturally cooling to room temperature, conducting high speed centrifugal separation, and re-dispersing and repeatedly washing the obtained solid with deionized water and 95% ethanol to obtain a colorless supernatant, and drying to obtain carbon microsphere / nanosphere. The method provided by the invention has the advantages of low hydrothermal carbonation temperature and high carbon production rate of the biomass, and is applicable to large-scale industrial production; and the product can be used as a catalyst carrier or adsorbent.
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Description

technical field

[0001] The invention relates to the field of preparation of new carbon materials, in particular to a low-temperature hydrothermal preparation method of biomass carbon micro / nano spheres. Background technique

[0002] Type the Background Technical Description paragraph here. Activated carbon material has been playing a huge role in environmental protection, adsorption separation and purification because of its excellent adsorption performance. Especially in recent years, new micro / nano-carbon materials, such as carbon nanotubes, carbon nanofibers, graphene, and micro / nano-carbon solid or hollow spheres, have been widely used in biological Sensors, biodiagnostics, electrode materials, hydrogen storage, drug carriers, adsorbents and catalyst carriers have shown broad application prospects.

[0003] These new carbon materials are generally prepared by methods such as chemical vapor deposition and high-temperature thermal decomposition, but these traditional met...

Claims

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