【摘要】 研究了石油焦在高温、碱性条件下的活化机理。扫描电镜和低温N2吸附法测定孔结构结果表明,石油焦在750℃～800℃下活化得到的产品,比表面达2900m2/g,微孔率到90%,吸附甲烷的体积比为115∶1,是较理想的活化反应温度范围。气相色谱分析结果证明,在活化过程中产生的气体为H2,CO2,CO,CH4。X射线衍射结果表明,吸附剂产物属于部分石墨化的无定形体。更多还原

【Abstract】 The activation mechanism of petroleum coke with KOH at higher temperature was studied. Methods including SEM, XRD, pore structure analysis by adsorbing N₂ and GC were employed during the study. The result showed that the petroleum coke was well activated at 750℃～800℃. The XRD result revealed that the product was mainly made of amorphous carbon partly graphited. The pore structure analysis showed that the products had a surface area of 2900m²/g^-1 and the content of micropore over 90%. The CH₄ volumetric adsorption was 115∶1. GC results showed that the gases produced during the activation were made up of H₂, CO₂, CO, CH₄. According to the gas composition, the reactions probably taking place during the activation were put forward.更多还原