KARBON MESOPORI DARI PIROLISIS POLIMER SINTETIS DAN APLIKASINYA UNTUK PENJERAPAN GAS RUMAH KACA

Abstract

Pore structures are needed to be tuned depending on utilizations of carbons, hence obtaining high application performances. In this work, mesoporous carbon was synthesized by pyrolysis of polymeric resin of resorcinol-phenol-formaldehyde-ethylene glycol (RPFEG) and employed to adsorb a greenhouse gas of CO₂. Carbons were produced at 650-775 ^oC pyrolysis temperatures. Pore structure was studied by N₂-sorption analysis. The results showed that a high quality of carbon results, proven by high specific surface areas and pore volumes in the range of 1000-1300 m²/g and 0,6-1,4 cm³/g, respectively. Mesoporous carbon (>80% mesopores) was obtained when employing pyrolysis temperature of 750 ^oC. Isotherm curves showed that adsorption at lower temperature is appropriate to obtain a high adsorption capacity. Capillary condensation assisted to obtain high adsorption volume of CO₂ up to 30 mmol/g at 25 °C and 30 bar pressure.