不同变质程度的煤制活性炭孔隙结构分析  

Pore Structure Analysis of Activated Carbon Made by Different Metamorphic Grade Coal

作　　者：李书荣[1] 张文辉[1] 王岭[1] 单晓梅[1] 

机构地区：[1]煤炭科学研究总院北京煤化工分院,北京100013

出　　处：《洁净煤技术》2004年第1期43-45,共3页Clean Coal Technology

摘　　要：在Autosorb-1C全自动物理化学吸附仪上使用N2和CO2对宁夏太西、山西大同和内蒙古准格尔3种不同变质程度的煤为原料制备的活性炭进行孔隙结构分析,用BET方程处理N2等温吸附数据,计算比表面积;用DFT法处理CO2等温吸附数据,进行微孔分析;用BJH法计算中孔孔径分布。从得出的结果可以看出,随着原料煤变质程度的加深,所制备的活性炭微孔和比表面积增大,超微孔、中孔体积变小,平均孔径变窄。分析结果表明,原料煤的性质是影响活性炭孔隙结构的主要因素。A kind of activated carbon were made by using the different metamorphic grade Shanxi Datong coal, Ningxia Taixi coal and Inner Mongolia coal as raw material. The pore structure of them is analyzed by using N_2 and CO_2 on the full automatic absorption apparatus Autosorb-1C. N_2 isothermal absorption data was treated by BET equation and to calculate the special surface area. CO_2 isothermal absorption data was treated by DFT equation and to analyze the micro porous. The medium pore diameter distribution was calculated by BJH method. The result is shown that, micro pore and special surface area increasing, super micro pore and medium pore volume decreasing and average pore diameter tend to narrow in pace with metamorphic grade increasing of raw material coal. Obviously, the main effect factor on activated carbon pore structure is the raw material coal property.

关 键 词：煤 活性炭 孔隙结构 BET方程 DFT 变质程度 

分 类 号：TQ424.11[化学工程]