沸石矿模板炭的制备及其纳米孔的形成机理  

Preparation of natural zeolite templated carbon and its nanopore formation mechanism

作　　者：王爱平[1] 康飞宇[2] 黄正宏[2] 郭占成[1] 

机构地区：[1]中国科学院过程工程研究所 [2]清华大学材料科学与工程系先进材料实验室,北京100084

出　　处：《新型炭材料》2007年第2期141-147,共7页New Carbon Materials

基　　金：国家自然科学基金(50272033)~~

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.

关 键 词：多孔炭 模板法 沸石矿 

分 类 号：TQ424.1[化学工程]