摘要
分别以沸石矿和人造沸石为模板、蔗糖为碳源、采用模板法制备了多孔炭材料。采用SEM和N2吸附对样品进行了表征。结果表明,沸石矿模板炭的比表面积(1070m2/g)比人造沸石模板炭的比表面积(1820m2/g)低,但沸石矿模板炭的总孔容(1.39cm3/g)和中孔孔容(0.98cm3/g)均明显高于人造沸石模板炭的总孔容(1.02cm3/g)和中孔孔容(0.39cm3/g)。沸石矿模板炭的纳米孔主要由三部分孔组成,即复制模板壁厚的“复制孔”、继承模板孔道的“继承孔”和炭化过程中形成的纳米孔。
Porous carbons were prepared using zeolite ore and artificial type X zeolite as templates, and sucrose as carbon source. Field-emission scanning electron microscopy and nitrogen adsorption analysis were employed to study the morphologies and pore structure of the samples. Results indicate that the BET specific surface area of zeolite ore templated porous carbon （ 1 070 m^2/g） is lower than that of type X zeolite templated porous carbon （ 1 820 m^2/g） while the total pore volume （ 1.39 cm^3/g） and mesopore volume （0.98 cm^3/g） of porous carbon obtained using zeolite ore as the template are much larger than that of porous carbon obtained by using type X zeolite as the template, which are 1.02 cm^3/g and 0.39 cm^3/g respectively. The nanopores of natural zeolite templated porous carbon are composed of three kinds of pores ： one is formed by removal of ore which means ＂templated pores＂, the second is inherited from template pores which we call ＂hereditary pores＂ and the third is formed during carbonization.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
北大核心
2007年第2期141-147,共7页
New Carbon Materials
基金
国家自然科学基金(50272033)~~
关键词
多孔炭
模板法
沸石矿
Porous carbons
Template method
Zeolite mineral
