Extremely high microporosity and sharp pore size distribution of a large surface area carbon prepared in the nanochannels of zeolite Y

The microporosity and pore size distribution of microporous carbons with high specific surface area were investigated. The carbons were synthesized in the nanochannels of powdered zeolite Y (Na-form, SiO₂/Al ₂O₃ = 5.6), and were referred as zeolite template carbon (ZTC). The properties of the commercial microporous carbons and ZTC were also investigated. It was observed from the x-ray diffraction analysis that ZTC had a structural regularity with a periodicity of about 1.4 nm, originating from the ordering of the 111 planes of zeolite Y. It was also observed the large micropores were dominant in ZTC, after the CO₂ adsorption at 0 °C.