液相聚合相分离技术制备孔径可控的多孔碳的研究

采用液相聚合相分离技术制备了多孔碳,并用压汞仪、BET比表面仪及扫描电镜对多孔碳性能进行表征.研究了制备工艺(热聚合制度和醇的种类)对多孔碳性能的影响.结果表明:热解后的多孔碳为无定形的碳,随着热聚合温度的升高,多孔碳粒子减小,平均孔径也减小,孔隙率增加,当采用40℃(3h)→100℃(24h)热聚合制度时,多孔碳的平均孔径为1.75μm,孔隙率为51.86％;选用不同的醇得到平均孔径在20.00-0.01μm之间变化,BET比表面积为350-400m2·g^-1及孔径分布非常窄的多孔碳.

Preparation of Porous Carbon with Controlled Pore Size Distribution by Polymerization-dependent Phase Separation Technique

Porous carbon was prepared by the polymerization-dependent phase separation technique. The characterizations of the porous carbon were determined with mercury porosimetry, scanning electron microscope and BET surface analyzer. The effects of various processing parameters (thermal process and the type of used glycols) on the properties of porous carbon were studied. The results show that porous carbon obtained is amorphous. The carbon particulate size and pore size decrease with increasing thermal polymer temperature, whereas porosities increase. When the thermal process [40℃(3h)→100℃(24h)] employed, the porous carbon is with average pore size of 1.75μm and porosity of 51.86%. By varying glycol, porous carbon with narrow pore size distributions can be obtained and the average pore size of porous carbon is between 0.01 and 5μm, with BET surface area range from 350 to 400m²·g^-1$.