Method and apparatus for manufacturing graphite oxide

摘要

There is provided a method and an apparatus for preparing graphite oxide. In accordance with the present disclosure, when an oxidizer is added by stages into a sequencing batch oxidizer mixer connected in multiple stages at a constantly low temperature, the oxidizer is mixed therein while suppressing an oxidation reaction. During an oxidation reaction of graphite, in a risky range of overheating and explosion, a tube type reactor equipped within a heat exchanger is used to accurately control a local temperature and the oxidizer can permeate between layers of the graphite with increased efficiency under ultrasonication. In an additional reaction range out of the risky range, a continuous stirred tank reactor is used to mature the oxidation reaction, so that a risk of explosion during manufacturing of graphite oxide can be reduced and a great amount of graphite oxide can be mass-produced economically.

主权项

1. A method for manufacturing graphite oxide, the method comprising:
preparing graphite slurry by mixing graphite and a sulfuric acid; mixing the graphite slurry with an oxidizer selected from the group consisting of a permanganic acid, permanganate, and a permanganate sulfuric acid solution by supplying the oxidizer by stages into sequencing batch oxidizer mixers connected to one another in multiple stages; making an intermediate reaction by pressing a reaction mixture mixed with the oxidizer into a tube type reactor equipped within a thermostat bath to be applied with ultrasonic waves; making an additional reaction by supplying a reaction mixture of the intermediate reaction into a continuous stirred tank reactor; mixing a reaction mixture of the additional reaction with water added; adding a hydrogen peroxide aqueous solution to the reaction mixture mixed with the water and mixing them to terminate an oxidation reaction; washing and separating graphite oxide from the reaction mixture of the terminated oxidation reaction; and drying the separated graphite oxide.