Preparation of high specific surface area and narrow pore distribution porous carbon material

Abstract

The invention belongs to the preparing field of porous carbon materials, which relates to a porous carbon material with high specific surface area and narrow pore distribution and which is prepared by adopting pin needles with biomass materials. The specific surface area of the porous carbon materials is capable of surpassing 3000m / 2g by adjusting activating agent dosage, activating temperature and activating time. The method of the invention has low requirement for production facilities, and has simple preparing process and low time-consumption. The main byproduct of the reaction is tar which is a product with high value in use. The washing solution of the porous carbon materials is aqueous solution which is rich in potassium ions, and is perfect potash fertilizer for agricultural industry via simple dealing. The porous carbon materials have high application prospect in the fields like the storage and separation of gas, electrode materials, catalysts or catalyst carriers in a plurality of chemical reactions, sewage disposal, recovery of noble metals and the like. The method has the advantages of cheap, plentiful and easily gained raw materials, simple preparing process, preparingcondition without region limitation, thereby being adapted for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of porous carbon materials, and in particular relates to a method for preparing porous carbon materials with high specific surface area and narrow pore distribution by using pine needles, a biomass material, as a raw material. Background technique [0002] Due to the rich pore structure and high specific surface area, porous carbon materials are widely used in daily life and industrial production. At present, porous carbon materials are mainly used in the absorption of harmful gases, sewage treatment, gas storage and separation, electrode materials for batteries or capacitors, catalysts or catalyst carriers for various chemical reactions, and recovery of precious metals. With the development of society, the demand for porous carbon materials is also increasing. The more common porous carbon materials in daily life are mainly activated carbon, and the production process of activated carbon is also emerg...

AI Technical Summary

Problems solved by technology

Most of the activated carbon prepared by the traditional chemical activation method has a large specific surface area, which has good effects in various applications. However, due to the uneven pore size distribution of the activated carbon prepared by the chemical activation method, it is used in some fields. The application (such as gas separation) is subject to certain restrictions

The porous activated carbon prepared by the physical activation method has a narrow pore size distribution and has good effects in various application fields, but usually the specific surface area of ​​the porous carbon material prepared by this method is relatively low, making these porous carbon materials The ideal application effect is not yet achieved

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