Process for preparing intermediate-phase carbon microspheres

Abstract

An intermediate-phase carbon microspheres (0.1-100 microns) is prepared through preparing raw material composed of basic material material and catalyst, polymerizing reaction, separating the resultant and drying. The said basic raw material is aromatic heavy oil and / or asphalt. The said catalyst is chosen from the oxides of Fe, Ni and Co. Its advantages are high output rate (20-70% and controllable granularity.

Description

technical field [0001] The invention belongs to the field of carbon materials, and mainly relates to the preparation of mesophase carbon microspheres. Background technique [0002] Mesophase carbon microspheres are one of the key new carbon materials developed in the field of carbon materials. It is a key material for the breakthrough and development of related cutting-edge technologies. Mesophase carbon microspheres can be used in various functional materials, and its graphitized products are excellent negative electrode materials for lithium-ion batteries. Special carbon products made from mesophase carbon microspheres have ultra-fine structure and excellent isotropy, oxidation resistance and ablation resistance, and can be used as various structural components. [0003] The production of earlier mesophase carbon microspheres was mostly carried out without using a catalyst, so the polymerization reaction time was long, the temperature was high, and the product yield was l...

AI Technical Summary

Problems solved by technology

There are still deficiencies in the above-mentioned various improvement methods, or the production process is complicated, or the catalyst is not easy to obtain, or the yield is not very obvious.

[0004] In JP04-161183, pure naphthalene is used as raw material and HF-BF3 is used as catalyst to produce mesophase carbon microspheres. Although the yield can be improved, using pure naphthalene as raw material limits the choice of raw materials, and the cost is also greatly increased