论文部分内容阅读
以新疆棉花秸秆为原料,Zncl2/Alcl3为活化剂制备棉秆活性炭,探讨了Zncl2/Alcl3与棉秆比例、Zncl2与Alcl3比例、浸渍时间、活化温度及活化时间对棉秆活性炭收率和碘吸附值的影响,并采用SEM对制备的棉秆活性炭进行了表征。结果表明,Zncl2/Alcl3活化制备棉秆活性炭表面有较清晰的孔道结构,分布有形状、大小不一的发达的孔洞;在试验范围内得到Zncl2/Alcl3活化制备棉秆活性炭的较优工艺条件为:Zncl2/Alcl3与棉秆比例1:1、Zncl2与Alcl3比例9:1、浸渍时间16h、活化温度600℃、活化时间90min,在此条件下制备的棉秆活性炭的收率为24.18%,碘吸附值为693.71mg/g,BET比表面积410m2/g,平均孔径3.19nm,孔容0.327cm3/g。
The cotton stalk activated carbon was prepared from cotton stalk in Xinjiang and ZnCl2 / AlCl3 as activator. The effects of ZnCl2 / AlCl3 ratio and cotton stalk ratio, ZnCl2 to AlCl3 ratio, impregnation time, activation temperature and activation time on the yield and iodine adsorption Value of the impact, and the use of SEM prepared cotton stalk activated carbon was characterized. The results showed that the ZnCl2 / AlCl3 activation activated carbon surface of cotton stalk has a clear pore structure, distribution of well-shaped pores of different sizes; within the experimental range obtained Zncl2 / Alcl3 activation of cotton stalk activated carbon prepared better conditions The ratio of ZnCl2 / AlCl3 to cotton stalks was 1: 1, the ratio of ZnCl2 to AlCl3 was 9: 1, the impregnation time was 16h, the activation temperature was 600 ℃, and the activation time was 90min. The yield of activated carbon prepared under these conditions was 24.18% The adsorption value was 693.71mg / g, the BET specific surface area was 410m2 / g, the average pore diameter was 3.19nm and the pore volume was 0.327cm3 / g.