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笔者采用微波加热的方式以松木片为原料、KOH为活化剂制备活化生物质炭,探索了3种不同KOH/生物质炭的配比(0.5、1.5和3.0)条件下的活化生物质炭的孔结构和甲苯吸附量。甲苯吸附量的测试采用了一种简便、高效、环保和廉价的方法。结果表明,配比为3.0的活化生物质炭达到最高的比表面积2044m~2/g,微孔比表面积也达到最高值1712m~2/g。对不同浓度的甲苯进行吸附,在甲苯浓度为400ppmv时,配比为3.0的活化生物质炭显示了最大的吸附量56.0%。而对高浓度甲苯吸附,配比为3.0的活化生物质炭的吸附量则可达到71.9%,并且其吸附等温线数据能很好的拟合DQSAR吸附模型。
The author uses microwave heating to pine wood chips as raw materials, KOH as activator to prepare activated carbon, to explore the three different KOH / biomass carbon ratio (0.5, 1.5 and 3.0) under the conditions of activated carbon Pore structure and toluene adsorption capacity. Toluene adsorption testing using a simple, efficient, environmentally friendly and cheap method. The results showed that activated carbon with the ratio of 3.0 reached the highest specific surface area of 2044m ~ 2 / g and the micropore surface area reached the highest value of 1712m ~ 2 / g. The adsorption of different concentrations of toluene, the toluene concentration of 400ppmv, the ratio of 3.0 activated carbon showed the largest amount of 56.0% adsorption. On the other hand, for the high concentration toluene adsorption, the adsorption capacity of activated charcoal with the ratio of 3.0 can reach 71.9%, and the adsorption isotherm data can well fit the DQSAR adsorption model.