A kind of preparation method of multilayer chip carbon material

A kind of preparation method of multilayer chip carbon material

  • CN 104,925,780 B
  • Filed: 03/01/2015
  • Issued: 04/12/2019
  • Est. Priority Date: 03/01/2015
  • Status: Active Grant
First Claim
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1. a kind of preparation method of multilayer chip carbon material, which is characterized in that first with hydro-thermal method and subsequent high temperature calcining systemStandby to obtain cobaltosic oxide catalyst precursor, then by chemical vapour deposition technique, hydrogen is restored as catalyst precursorThe carbon material with multilayer chip structure has been prepared as carbon source in processing gas, acetylene gas, in the preparation process, behaviourMake simply, reaction condition is mild and easy to control, including following key step:

  • (1) cobalt nitrate and urea are utilized, the intermediate product with lamellar structure is prepared by hydro-thermal method, then it is carried outHigh-temperature calcination has obtained the cobaltosic oxide catalyst precursor with laminated structure;

    (2) it takes appropriate cobaltosic oxide catalyst precursor to be placed in porcelain boat, and puts it into the reaction tube of pipe reaction furnace;

    (3) reaction tube is vacuumized, then according to 3 DEG C/min~10 DEG C of setting/min heating rate by reaction tube by roomTemperature rise is to 260 DEG C~550 DEG C reaction temperatures;

    (4) hydrogen is passed through reaction tube to atmospheric pressure, the height of 20min~40min is carried out to cobaltosic oxide catalyst precursorWarm reduction treatment;

    (5) hydrogen reducing after treatment takes out hydrogen, then passes to carbon-source gas acetylene to atmospheric pressure, and keep 20minThe reaction time of~60min;

    (6) it when after reaction, the residual gas in reaction tube being taken out, and keep vacuum, after room temperature, receivesCollect the product in porcelain boat.

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