石油焦活化机理的研究

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2 900 m2/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。

RESEARCH ON THE ACTIVATION MECHANISM OF PETROLEUM COKE

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.