Preparation method of formed carbon-based material

Abstract

The invention relates to a preparation method of a formed carbon-based material, which is characterized by comprising the following steps: (1) performing ball milling on powdery activated carbon or granular activated carbon; (2) mixing the activated carbon powder subjected to ball milling with iron nitrate, aluminum silicate, asphalt and chitosan; (3) heating and stirring the slurry to form a stable slurry with a high solid content; (4) pouring the treated slurry onto the top end surface of a carrier, vertically arranging the carrier along the pore path direction or vertically arranging the carrier in a manner that the angle between the pore path direction of the carrier and the vertical direction is not bigger than 30 degrees, and then enabling the carrier to vibrate in a vertical reciprocating manner, wherein the vibration frequency is 10-60 Hz, the vibration amplitude is 1-10 mm, and the slurry is quickly and evenly coated on the carrier under the action of self weight in the vibration process, thus forming a slurry layer with a thickness of 0.5-5 mm; and (5) performing heating / cooling drying treatment four times to obtain the formed carbon-based material. The preparation method provided by the invention can increase the spatial contact area of the activated carbon formed material and effectively reduce gas-flow resistance, and is beneficial to secondary development such as surface modification and the like.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of an activated carbon catalyst, in particular to a preparation method of a shaped carbon-based material. Background technique [0002] As we all know, carbon-based materials represented by activated carbon have the advantages of rich micropores, large specific surface area, many active sites, and large loading capacity of active components, and have extensive and important applications in adsorption materials and catalytic materials. [0003] The main sources of activated carbon are coal and biomass. The finished products are generally crushed granular activated carbon and columnar granular activated carbon. flow resistance. [0004] In the past, the application of activated carbon was mostly used for adsorption and purification of waste water, waste gas and other occasions. Due to the low flow rate, the activated carbon filling layer ...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing activated carbon adsorption materials will produce greater resistance under the requirements of high flow rate and high space velocity, which will easily lead to difficulties in application. The preparation method of forming carbon-based materials for forming materials can effectively reduce airflow resistance while increasing the space contact area of ​​activated carbon forming materials, and facilitate secondary development such as surface modification