富含中孔和微孔的生物质炭的制备及其吸附性能研究  

Preparation and adsorption performance of micro-mesoporous activated carbon from biomass

作　　者：腊明[1] 陈昌东[1] 冯云晓[1] 李松田[1] 

机构地区：[1]平顶山学院化学化工学院,河南平顶山467000

出　　处：《现代化工》2014年第9期103-105,107,共4页Modern Chemical Industry

基　　金：平顶山学院青年科研基金资助项目(20120014);河南省科技厅科技公关项目(142102310462);环境科学省级重点学科基金资助(2012186)

摘　　要：以花生壳为原材料,在无需N2保护条件下,以ZnCl2为活化剂制备富含中孔和微孔结构的活性炭。以Cu2+为探针分子,通过正交实验获得活性炭的最优制备工艺组合:陈化时间为18 h,陈放温度为120℃,物料质量比[m(花生壳)/m(ZnCl2)]为2∶1,400℃活化100 min,对重金属离子Cu(Ⅱ)的吸附率达85%。利用扫描电镜对花生壳活性炭的表面形态进行观察分析,结果表明,活性炭表面具有一定量微米级和大量纳米级的孔状结构。全自动表面分析仪测定结果表明,制备的活性炭比表面积和孔容积分别为728 m2/g和0.347 8 cm3/g,孔径主要集中在20 nm以下,吸附的平均孔径为1.98 nm,微孔和中孔的容积分别为0.266 7 cm3/g和0.081 1 cm3/g,表明该活性炭具有较好的吸附性能,为实现农业废弃物花生壳在重金属污水生态处理方面的利用提供有效途径。The micro-mesoporous activated carbon is prepared from peanut shell by activation of ZnCl2 in absence of N2 atmosphere. The optimal conditions are as follows by orthogonal experiments： 18 hours of aging time, 120℃ of aging temperature,2：1 of material ratio, 100 minutes of activation time and 400℃ of activation temperature. The obtained activated carbons are characterized by SEM and tested by nitrogen adsorption at 77 K. The results show that the specific surface area,the accumulated pore volume and the averaged pore size are 728 m^2 .g 1,0. 347 8 cm^3 .g ^-1 and 1.98 nm, respectively. These obtained meso- and microporous activated carbon is promising in ecological treatment of heavy metal ion-eontaining wastewater.

关 键 词：花生壳 活性炭 ZNCL2 吸附 

分 类 号：O69[理学—化学]