【摘要】 目的研究一种能有效去除室内空气中甲醛的去除剂。方法以活性炭为原料,以KOH为活化剂,通过活化、浸渍,研究了活性炭的粒度、活化时间、活化温度、浸渍时间等对甲醛去除剂吸附量的影响。结果确定了制备甲醛去除剂的最适宜工艺条件以及吸附甲醛的最佳条件(粒度为100目,碱炭质量比为3∶1,活化温度为600℃,活化时间为1.5h,浸渍时间为2h)。甲醛去除剂对甲醛的质量吸附率达到49.6%,比表面积1591m2/g,孔容1.01cm3/g,因此经过改性处理的活性炭其质量吸附率、比表面积均大于未处理的活性炭。结论该甲醛去除剂可有效去除甲醛。更多还原

【Abstract】 Objective To develop a remover of formaldehyde in indoor air. Methods Activated carbon was used as the raw materials, potassium hydroxide as the activator. The activated carbon was modified through activation and impregnation. The influence factors for the formaldehyde adsorption property of activated carbons were evaluated, such as the size, activation temperature, activation time and impregnation time. Results The optimum technics conditions for developing the formaldehyde remover and the optimum conditions to absorb formaldehyde were confirmed. The mass adsorption capacity of the adsorbent was 49.6%, the BET surface area was about 1 591 m2/g and the total pore volume was 1.01 cm3/g. Conclusion The mass adsorption capacity of formaldehyde and the BET surface area of the modified activated carbon in the present paper are better than those of unmodified activated carbon.更多还原