钾盐活化法活性炭微观结构的分析  

Investigation on the Microstructure of Activated Carbons Prepared by Potassium Salts Activation Methods

作　　者：陈翠霞[1] 蔡政汉 林星[1] 林冠烽[2] 林咏梅[1] CHEN Cuixia;CAI Zhenghan;LIN Xing;LIN Guangfeng;LIN Yongmei(College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002;College of Jinshan,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002)

机构地区：[1]福建农林大学材料工程学院,福建福州350002 [2]福建农林大学金山学院,福建福州350002

出　　处：《武夷学院学报》2017年第12期11-14,共4页Journal of Wuyi University

基　　金：福建省中青年教师教育科研项目(JAT160684)

摘　　要：以杉木为原料,碳酸钾和醋酸钾为活化剂,制备杉木基活性炭,采用扫描电镜技术对其微观形貌结构进行观察研究,并根据比表面积分析仪测定活性炭N_2吸附-脱附等温线,分析其孔径分布。结果表明,钾盐活化法制备的活性炭表面均存在大量孔结构,呈现出较大的比表面积,高达137 0 m^2/g,但不同钾盐活化制得的活性炭孔结构特征又有较大区别:K_2CO_3法制备的活性炭孔结构基本为一端敞开的鼓泡式结构,醋酸钾法制备的活性炭孔结构基本为类蜂窝状,且表面孔结构更规整,均匀,平均孔径更大。Activated carbons were prepared from Chiness Fir sawdusts by activating with potassium carbonate and potassium acetate respectively.The surface characteristics of activated carbon were studied by using scanning electron microscope(SEM)and BET method.The results showed that there were a lot of pore structures on the surface of activated carbon prepared by potassium salt activation method,but the pore structure characteristics of activated carbon prepared by different activation of potassium salts were different greatly.The pore structure of activated carbon prepared by K2CO3 method was basically bubbling at one end,while prepared by CH3COOK method was honeycomb like.The surface structure of CH3COOK activated carbon was more regular and uniform with a larger pore size.

关 键 词：活性炭 扫描电镜 碳酸钾 醋酸钾 

分 类 号：TQ42[化学工程]