沸石矿模板炭的制备及其纳米孔的形成机理

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 (1070m2/g) is lower than that of type X zeolite templated porous carbon (1820m2/g) while the total pore volume (1.39cm3/g) and mesopore volume (0.98cm3/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 1.02cm3/g and 0.39cm3/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.