红麻杆芯活性炭的制备及其孔结构  

Preparation and Pore Structures of Kenaf-based Activated Carbons

作　　者：陈燕丹[1] 黄明堦[2] 黄彪[1] 廖喜明[1] 

机构地区：[1]福建农林大学材料工程学院 [2]福建农林大学生命科学学院,福建福州350002

出　　处：《河南科技大学学报（自然科学版）》2010年第1期70-73,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(30771682);福建省自然科学基金项目(2008J0037);福建省青年人才创新基金项目(2007F3009)

摘　　要：以红麻杆芯为原料,经450℃低温炭化制备麻炭前驱体。在麻炭中添加乙酸镍为催化活化剂,在900℃下炭化2h,制备出高比表面积且中孔较发达的活性炭。借助原子吸收分光光度计和比表面积测定仪,研究了镍催化剂负载量对麻杆基活性炭吸附性能和孔结构的影响。结果表明:在麻炭中负载适当含量的乙酸镍可有效提高麻炭的性能。用8%的乙酸镍溶液水热浸渍麻炭后再进行二次炭化,所制活性炭的比表面积、总孔容积和中孔率分别为:1002m2/g,0.78cm3/g和41%。Carbon precursor was prepared from kenaf cores carbonized at 450 ℃.By addition of nickel acetate as catalysis activation agent,activated carbons with high specific surface area and relative rich mesoporosity were prepared when kenaf-based carbon precursor was carbonized at 900 ℃ for 2 h.Influences of nickel catalyst loading levels on the adsorption properties and pore structures of kenaf-based activated carbons were investigated by atomic absorption spectrophotometer and nitrogen adsorption analysis,and catalyzed activation effect of nickel acetate was proposed.Results indicated that addition of an appropriate amount of nickel acetate can notably improve the properties of kenaf-based carbons.When kenaf-based carbon precursor was hydrothermally impregnated with 8% nickel acetate followed by another step of carbonization,the specific surface area,total volume and mesopore ratio of as-prepared activated carbons were 1 002 m2/g,0.78 cm3/g and 41%,respectively.

关 键 词：红麻杆芯 乙酸镍 催化活化 活性炭 

分 类 号：X712[环境科学与工程—环境工程]