Method for rapidly preparing micron-sized carbon sphere with good dispersibility

A micron-scale, dispersive technology, applied in the field of adsorption materials, can solve the problems of strong corrosiveness and easy damage to the spherical structure of HTCS, and achieve the effect of excellent performance, maintaining the shape unchanged, and low temperature.
CN109704337AActive Publication Date: 2019-05-03GUANGZHOU UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU UNIVERSITY
Publication Date
2019-05-03

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Abstract

The invention belongs to the technical field of adsorption materials and discloses a method for rapidly preparing a micron-sized carbon sphere with good dispersibility. The method disclosed by the invention comprises the following steps: (1) mixing 6 parts by mass of sugar and 0.2-5 parts by mass of strong oxidant and FeSO4 in water, carrying out heating for a reaction, and carrying out separationto obtain a hydrothermal carbon sphere; and (2) mixing 1 part by mass of hydrothermal carbon sphere obtain in step (1) with 1-5 parts by mass of potassium oxalate, and carrying out high-temperature roasting at an inert atmosphere and the temperature of 500-900 DEG C for 1-5 h to obtain the micron-sized carbon sphere. The method disclosed by the invention is high in reaction speed, the carbon sphere is started to be generated within 5 min since heating is started, and the reaction is to be completed within 1-4 h, so that the reaction time is greatly shortened, and the energy consumption is reduced; the prepared porous activated carbon sphere has abundant micropores and good dispersibility and has the specific surface area of 975-1430 m<2> / g; the adsorption quantity of CO2 at normal temperature and normal pressure is 3.43-3.74 mmol / g; and the method can be used for capturing CO2 at room temperature.
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Description

technical field

[0001] The invention belongs to the technical field of adsorption materials, in particular to a method for rapidly preparing micron-sized carbon spheres with good dispersibility. Background technique

[0002] Micro- and nano-scale carbon spheres are important materials for catalysis, separation and energy storage. Among them, micro-scale carbon spheres have very ideal properties in many application fields, especially carbon microspheres with hierarchical structure or hierarchical porous structure. This structure is conducive to the transport of substances within it or the spatiotemporal control of certain chemical reaction processes. In addition, carbon microspheres are easier to separate than nanoscale carbon spheres. Therefore, the efficient and rapid preparation of stable, non-toxic, and versatile porous carbon microspheres has attracted more and more attention.

[0003] Sugars (monosaccharides, disaccharides, polysaccharides) are common raw materials fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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