微波辐射_KOH活化兰炭粉制备活性炭.pdf

第38卷第10期化学工程Vo.l38No.10

2010年10月CHEMICALENGINEERING(CHINA)Oct.2010

微波辐射-KOH活化兰炭粉制备活性炭

田宇红1,2,兰新哲1,2,周军1,陈向阳1,李林波1
(1.西安建筑科技大学冶金工程学院,陕西西安710055;2.陕西省冶金工程技术研究中心,陕西西安710055)

摘要:研究了以兰炭粉为原料,KOH为活化剂,采用微波辐射法制备活性炭的可行性。探讨了微波功率、碱炭质量

比和活化时间对活性炭吸附性能的影响。同时采用美国ASAP-2020吸附仪测定了所制备活性炭的N2吸附脱附等
温线和孔径分布,采用红外光谱分析了样品的表面官能团。结果表明:微波功率为700W,碱炭质量比为3,活化时
间为15min工艺条件下制得的活性炭碘吸附值为694.5mg/g,比表面积为513.62m2/g,总孔容为0.5103cm3/g,平
均孔径为3.9738nm,该活性炭为中孔型。以兰炭粉为原料,传统加热和微波加热制备的活性炭红外光谱图其峰
形基本一致,只是峰强不同。
关键词:兰炭粉;微波辐射;活性炭;KOH;孔径分布
中图分类号:TQ424.1文献标识码:A文章编号:1005-9954(2010)10-0225-04

Preparationofactivatedcarbonfrombluecokepowderby
microwaveradiationandKOHactivation
TIANYu-hong1,2,LANXin-zhe1,2,ZHOUJun1,CHENXiang-yang1,LILin-bo1
(1.SchoolofMetallurgicalEngineering,XicanUniversityofArchitectureandTechnology,Xican710055,
ShaanxiProvince,China;2.ResearchCenterofMetallurgicalEngineering&Technologyof
ShaanxiProvince,Xican710055,ShaanxiProvince,China)
Abstract:UsingbluecokepowderasfeedstockandKOHasactivatingagen,tthefeasibilityofpreparationof
activatedcarbonbymicrowaveradiationwasstudied.Theeffectsofmicrowavepower,themassratioofKOHto
carbonandactivationtimeontheadsorptionpropertiesofactivatedcarbonwereinvestigated.Thenitrogen
adsorption-desorptionisothermandporesizedistributionoftheactivatedcarbonwereanalyzedbyASAP-2020,and
thefunctiongroupsonactivatedcarbonwereanalyzedbyFT-IRspectroscopy.Theresultsshowthatwhen
microwavepoweris700W,themassratioofKOHtocarbonis3andactivationtimeis15min,theiodine
adsorptionvalueoftheactivatedcarbonobtainedis694.5mg/g,thespecificsurfaceareais513.62m2/g,the
porevolumeis0.5103cm3/gandtheaverageporesizeis3.9738nm;andtheactivatedcarbonpossesses
predominantmesoporousstructures.Theinfraredspectrogramsoftheactivatedcarbonobtainedfrombluecoke
powderbytraditionalheatingandmicrowaveheatinghavetheapproximateconsistentshape,onlythepartialpeak
intensityisappreciablydifferen.t
Keywords:bluecokepowder;microwaveradiation;activatedcarbon;KOH;poresizedistribution

兰炭生产过程中,小于3mm的兰炭粉末[1-3]制备活性炭的有利方面。20世纪9