Dihydrogen Adsorption Isotherms (77 K) on Carbon Nanomaterials
Kinetics and Catalysis
, E-ISSN: 1608-3210
Boreskov Institute of Catalysis SB RAS
Ioffe Physical-Technical Institute RAS
Russian Foundation for Basic Research
Dihydrogen adsorption at 77 K on a number of fine-particle carbon materials, activated carbons, and carbon nanotubes has been investigated. The micropore structure parameters of these materials have been determined using a volumetric comparative method and nonlocal density functional theory (NLDFT). These data processing methods lead to different values of textural parameters. This difference is attributed to the presence of specific sorption sites on the surface of real carbon materials. The pore size range in which the NLDFT method is applicable to the C-H2 system has been determined. A comparison between the hydrogen sorption properties of different carbon nanotubes is presented.