CAJ | 학술논문

以KOH为活化剂,采用化学活化法对橡木锯屑制取活性炭进行了实验研究.考察了活化温度、碱炭比和活化时间对活性炭比表面积的影响,得到了制取活性炭的最优工况,随后对此工况下的活性炭先后使用 HNO_3浸渍和乙酸镍Ni负载.结果表明,最优工况下制备的活性炭比表面积为1967 m~2/g.HNO_3浸渍可以增加活性炭表面含氧官能团的种类和含量,也能较大程度地降低活性炭的灰分,乙酸镍Ni负载后,活性炭体积电阻率降低了很多.
이KOH위활화제,채용화학활화법대상목거설제취활성탄진행료실험연구.고찰료활화온도、감탄비화활화시간대활성탄비표면적적영향,득도료제취활성탄적최우공황,수후대차공황하적활성탄선후사용 HNO_3침지화을산얼Ni부재.결과표명,최우공황하제비적활성탄비표면적위1967 m~2/g.HNO_3침지가이증가활성탄표면함양관능단적충류화함량,야능교대정도지강저활성탄적회분,을산얼Ni부재후,활성탄체적전조솔강저료흔다.
With KOH serving as an activation agent,experimentally studied was the active carbon prepared from oak wood sawdust by adopting a chemical activation method.The influence of the activation temperature,alkali/carbon ratio and activation time on the specific surface area of the active carbon was investigated.On this basis,the optimum operating condition for active carbon preparation was obtained. Subsequently,HNO_3 soaking and nickel acetate loading were used successively to the active carbon under the above-mentioned conditions. It has been found that the specific surface area of the active carbon prepared under the optimum operating condition is 1 967 m~2/g. HNO_3 soaking can increase the variety and content of oxygen-containing functional groups on the surface of the active carbon and decrease the ash content of the active carbon to a relatively big extent. After a load has been added to the active carbon by using nickel acetate,the volumetric resistivity of the active carbon will drop greatly.