▎ 摘　　要

NOVELTY - Preparation of three-dimensional microporous graphene involves (a) taking transition metal simple substance powder or transition metal-containing compound as catalyst, placing catalyst in reactor, increasing temperature of reactor at 5-100 degrees C/minute, introducing inert gas to remove air, heating, stopping inert gas to change through 1-2000 ml/minute in reducing atmosphere, carrying out reduction annealing treatment, and (b) introducing carbon source into microporous metal catalyst framework to grow graphene to obtain catalyst framework-containing three-dimensional graphene. USE - The method is useful for preparing three-dimensional microporous graphene, which is useful in spatial heat conduction, electric conduction, medicine, energy and catalyst carrier applications. ADVANTAGE - The method ensures simple, rapid, convenient and environmentally-friendly preparation of three-dimensional microporous graphene with high yield, quality and density and small gap and without participation of solution. DETAILED DESCRIPTION - Preparation of three-dimensional microporous graphene without participation of solution involves (a) taking transition metal simple substance powder or transition metal-containing compound as catalyst, placing catalyst in a reactor, increasing temperature of reactor at 5-100 degrees C/minute, during heating, introducing inert gas to remove air, heating at 100-1200 degrees C, stopping inert gas to change through 1-2000 ml/minute in reducing atmosphere, carrying out reduction annealing treatment for 1 minute to 10 hours to obtain microporous metal catalyst framework, (b) introducing a carbon source into catalyst to start to grow graphene at 400-1200 degrees C and pressure of 1 mTorr to 1 atm for 30 seconds to 10 hours to obtain catalyst framework-containing three-dimensional graphene, and (c) continuously increasing reactor temperature to metal evaporation temperature, simultaneously vacuumizing, discharging metal vapor and cooling to room temperature.