Adsorption Properties of a Functional Porous Material Based on a Zn–BTB Metal–Organic Framework Structure.

A Zn–BTB metal–organic framework structure was synthesized by the solvothermal method; it is characterized by micropore volume W₀ = 0.67 cm³/g, effective radius of micropores х₀ = 0.67 nm, and standard characteristic energy of benzene-vapor adsorption Е₀ = 18.0 kJ/mol. The theory of volume filling of micropores was used to calculate the methane-adsorption equilibria on the synthesized Zn–BTB sample at temperatures over the range from 243 to 313 K and pressures up to 35 MPa; the differential molar isosteric heats of adsorption were evaluated. The maximum value of methane adsorption amounts to ~14.5 mmol/g at a pressure of 8 MPa and a temperature of 243 K. [ABSTRACT FROM AUTHOR]