Gas sorption properties of microporous metal organic frameworks

Abstract: A low-temperature gas sorption study has been carried out on four three-dimensional microporous metal organic framework (MMOF) structures and two two-dimensional layered structures. The pore characteristics are analyzed based on the argon adsorption–desorption isotherms at 87K. The results from hydrogen sorption experiments conducted at 77 and 87K show that all MMOFs have a relatively high hydrogen uptake, with adsorbed hydrogen densities falling in the range of liquid hydrogen. Isosteric heats of hydrogen adsorption data calculated based on the Clausius–Clapeyron equation are consistent with these observations, indicating strong sorbent–sorbate interactions. [Copyright &y& Elsevier]