Method for preparing graphite oxide

Method for preparing graphite oxide

CN
  • CN 102,757,037 B
  • Filed: 04/26/2011
  • Issued: 11/05/2014
  • Est. Priority Date: 04/26/2011
  • Status: Active Grant
First Claim
Patent Images

1. a preparation method for graphite oxide, is characterized in that, this preparation method comprises the steps:

  • S1, the vitriol oil is cooled to 0 DEG C;

    S2, in the vitriol oil in step S1, add dry graphite, then add potassium permanganate, and at 0~

    20 DEG C insulated and stirred reaction 2~

    4h;

    S3, the reaction system in step S2 is warming up at 32~

    38 DEG C to insulated and stirred reaction 0.5~

    1h;

    S4, the reaction system of step S3 is slowly poured into 460~

    920mL temperature is in the water of 20~

    80 DEG C, and controlling temperature of reaction system is 10 DEG C, 20 DEG C, 40 DEG C, 60 DEG C, 70 DEG C or 90 DEG C, and insulated and stirred reaction 15~

    45min, subsequently toward adding hydrogen peroxide, and after purifying treatment, obtain described graphite oxide;

    Wherein, in step S4, described purifying treatment also comprises the steps;

    S41, filter reaction system, use subsequently salt acid elution in filtrate not till containing sulfate radicals, obtain solid product;

    S42, washing, suction filtration the solid product obtaining in vacuum drying step S41 at 50 DEG C, cooling after, obtain described graphite oxide.

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