Structural Features and Mechanisms of Gas Adsorption in the Metal-Organic Framework Zif-8

This paper examines the structural features of the metal-organic framework ZIF-8 and the physicochemical mechanisms of carbon dioxide (CO2) and methane (CH4) adsorption. Particular attention is paid to the effects of pore structure, imidazolate linker flexibility, and the nature of intermolecular interactions on adsorption capacity and gas separation selectivity. The roles of molecular sieving, dispersion forces, and electrostatic interactions in gas adsorption processes are analyzed. The effects of temperature, pressure, and diffusion limitations on the separation efficiency of CO2/CH4 mixtures are discussed. The necessity of a comprehensive analysis of equilibrium, kinetic, and thermodynamic characteristics is emphasized to ensure a reliable assessment of the adsorption properties of ZIF-8 and its potential for practical applications.