CAJ | 학술논문

以稻壳为原料,ZnCl2-CuCl2为复合活化剂,制备稻壳活性炭,并以BET比表面积和吸附性能为指标,通过正交试验对制备的工艺条件进行优化,并对制得的稻壳活性炭采用氮气吸附等温线、X射线衍射仪( XRD)表征。结果表明,稻壳可以被制得大比表面积活性炭。影响活性炭比表面积和吸附性能最重要的因素是氯化锌浓度和活化温度,最佳制备工艺条件是氯化锌浓度5 mol/L,氯化铜浓度0.4 mol/L,活化温度500℃,活化时间2 h。该条件下制得的稻壳活性炭比表面积为1924 m2/g,碘吸附值为1041 mg/g,亚甲基蓝吸附值为188 mg/g。
이도각위원료,ZnCl2-CuCl2위복합활화제,제비도각활성탄,병이BET비표면적화흡부성능위지표,통과정교시험대제비적공예조건진행우화,병대제득적도각활성탄채용담기흡부등온선、X사선연사의( XRD)표정。결과표명,도각가이피제득대비표면적활성탄。영향활성탄비표면적화흡부성능최중요적인소시록화자농도화활화온도,최가제비공예조건시록화자농도5 mol/L,록화동농도0.4 mol/L,활화온도500℃,활화시간2 h。해조건하제득적도각활성탄비표면적위1924 m2/g,전흡부치위1041 mg/g,아갑기람흡부치위188 mg/g。
A range of activated carbons were prepared from rice husk with ZnCl2-CuCl2 composite activator. The preparation conditions were optimized by orthogonal test using ZnCl2 concentration,CuCl2 concentration,activation temperature and activation time as effect factors. The adsorption properties of produced activated carbons were investigated. Rice husk-based activated carbon (RAC) was characterized by nitrogen adsorption-desorption isotherms and X-ray diffraction (XRD). Results indicated that rice husk could produce activated carbon with high surface area. The optimized conditions were as follows:5mol/L ZnCl2 ,0. 4 mol/L CuCl2 ,activation temperature 500℃,and activation time 2 h. The Iodine number,methylene blue value and BET surface area of the prepared activated carbon were 1 041 mg/g,188 mg/g and 1 924 m2/g,respectively.