高比表面积煤基活性炭的制备及其吸附性能的研究 -

以太西无烟煤为原料,KOH为活化剂,采用化学活化法制备高比表面积煤基活性炭,着重考察了碱炭比、活化温度、活化时间对活性炭吸附性能的影响。研究结果表明:当碱炭比为4、活化温度为800℃、活化时间为1h时,可以制得比表面积达3215m2/g,碘吸附值达2884mg/g,亚甲蓝吸附值达548mg/g的高比表面积煤基活性炭。 Adopting chemical activation method,the high specific surface area coal-based activated carbon was prepared from Taixi anthracite by KOH as activator. The influence of the ratio of KOH to carbon,activation temperature and activation time on adsorption properties were emphasized studied. The results show that high specific surface area coal-based activated carbon can be prepared when the ratio of KOH to carbon was 4,activation temperature was 800℃and activation time was 1h,which specific surface area was 3215m2/g,iodine adsorption value was 2884mg/g and methylene blue adsorption value was 548mg/g