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以脱油沥青调制的高软化点沥青为原料,水蒸气为活化剂制备柱状活性炭。考察了活化温度、沥青与黏结剂比例对柱状活性炭强度、收率、碘吸附值、比表面积和孔径分布的影响。研究表明:黏结剂含量一定时,随着活化温度的升高,活性炭强度、碘吸附值和比表面积呈先增大后减小的趋势;而当活化温度一定时,随着黏结剂含量的增加,活性炭强度、碘吸附值和比表面积也呈现先增大后减小的趋势。当活化温度800℃,黏结剂含量13%时,可以得到比表面积为1156m~2/g,总孔容为0.62cm~3/g,微孔率为60%,灰分为0.48%的活性炭。
Dehydrated asphalt prepared by high softening point asphalt as raw material, water vapor as activator to prepare columnar activated carbon. The effects of activation temperature, proportion of asphalt and binder on the columnar activated carbon strength, yield, iodine adsorption value, specific surface area and pore size distribution were investigated. The results show that with the increase of activation temperature, the strength of activated carbon, iodine adsorption value and specific surface area increase first and then decrease with the increase of activation temperature. When the activation temperature is constant, with the increase of binder content , Activated carbon intensity, iodine adsorption value and specific surface area also showed the first increase and then decrease. When the activation temperature is 800 ℃ and the binder content is 13%, the activated carbon with specific surface area of 1156m ~ 2 / g, total pore volume of 0.62cm ~ 3 / g, microporosity of 60% and ash of 0.48% can be obtained.