Study On Synthesis And Application Of Hydrothermal Carbons

The fibrication and application of hydrothermal carbon materials are introduced inthis dissertation. Porous carbon materials with uniform pore system were produced via ahydrothermal carbonization process under mild conditions (180C), and the physical andchemical properties of all the as-systhesized porous carbon materials were characterized.Nitrogen-doped microporous carbons were produced by using nitrogen-containingpolymer as soft template and biomass glucose as carbon source, via a hydrothermalcarbonization process. Fourier transform infrared (FTIR), scanning electron microscopy(SEM), transmission electron microscopy (TEM), elemental analysis(EA), X-rayphotoelectron spectroscopy (XPS), nitrogen adsorption, carbon dioxide adsorption,hydrogen adsorption and carbon dioxide/nitrogen selectivity were carried out for adetailed characterization. It showed the nature micropore character of N-dopedmicroporous of carbon material obtained by HTC process, the high content of nitrogen(9.1wt%), the high BET surface area (456m2/g), the hydrogen adsorption at77K(0.91wt%), and the high carbon dioxide adsorption at273K (11.77wt%). The carbondioxide/nitrogen selectivity could reach up to39, and the isosteric heat of adsorption was45kJ/mol.Mesoporous carbon materials were produced by using polystyrene (dia.89nm) ashard template and glucose as carbon source via hydrothermal carbonization. Scanningelectron microscopy (SEM), transmission electron microscopy (TEM), nitrogenadsorption and carbon dioxide adsorption were carried out for a detailed characterization.It exhibited uniform hollow structure, high surface area (560m2/g), and considerablecarbon dioxide adsorption (13.5wt%).