CAJ | 학술논문

以杉木为原料,经苯酚液化、熔融纺丝、固化处理后,CO2活化制备出木质活性炭纤维,利用扫描电镜、拉曼光谱、比表面积测定对其形态结构进行了表征,并研究了活化工艺因素对其碘吸附性能的影响。结果表明,木质活性炭纤维的表面平滑,断面呈圆形；500℃以上的木质活性炭纤维拉曼图谱都出现炭材料典型的D峰和G 峰,且随着活化温度的提高,其石墨微晶尺寸La 逐渐增大,R 值逐渐减小；木质活性炭纤维的孔结构主要以微孔为主,其微孔率达到90%,只存在少许的中孔结构。随活化温度和活化剂用量的增加,木质活性炭纤维的碘吸附值明显增加,其收率随活化温度的升高呈现降低趋势；当活化时间增加到40min时,木质活性炭纤维的碘吸附值达到最大,而后降低。
이삼목위원료,경분분액화、용융방사、고화처리후,CO2활화제비출목질활성탄섬유,이용소묘전경、랍만광보、비표면적측정대기형태결구진행료표정,병연구료활화공예인소대기전흡부성능적영향。결과표명,목질활성탄섬유적표면평활,단면정원형；500℃이상적목질활성탄섬유랍만도보도출현탄재료전형적D봉화G 봉,차수착활화온도적제고,기석묵미정척촌La 축점증대,R 치축점감소；목질활성탄섬유적공결구주요이미공위주,기미공솔체도90%,지존재소허적중공결구。수활화온도화활화제용량적증가,목질활성탄섬유적전흡부치명현증가,기수솔수활화온도적승고정현강저추세；당활화시간증가도40min시,목질활성탄섬유적전흡부치체도최대,이후강저。
After melt-spinning by adding hexamethylenetetramine and the curing treatment,wooden activated carbon fibers are prepared from the phenolated Chinese fir (cunninghamia lanceolata)using CO2 activation,the microstructure characterization was investigated by SEM,Raman spectroscopy and BET specific surface area, and the effects of activation processes on iodine adsorption properties also are studied.The results show that wooden activated carbon fibers have smooth surface and a circular cross-section;when activating temperature reaches 500℃,Raman spectroscopy shows typical D peak and G peak of carbon materials,and the crystallite si-zes La increases and the value of the disordering R decreases with the activating temperature increasing;wooden activated carbon fibers have the highest micropores content of 90% and a little mesopores.Iodine adsorption of wooden activated carbon fibers increases significantly with the activating temperature and the flow rate of CO2 increasing,but the yield decreases with the activating temperature;iodine adsorption of wooden activated car-bon fibers was found to be maximum at the activating time 40min and then fall.