Grand Canonical Monte Carlo (GCMC) simulation has been used to study the adsorption of methanol, glycerol, and their mixtures in the metal organic framework IRMOF-1, and canonical ensemble molecular dynamics simulation was used to study their diffusion in that adsorbent. In particular, we consider the adsorption of pure glycerol in IRMOF-1 at several different temperatures and the diffusion of pure glycerol in IRMOF-1 at infinite dilution. Then, we study the influence of the methanol as solvent and how different concentrations of methanol affect the behavior of glycerol in IRMOF-1. It is found that the glycerol is easily adsorbed into IRMOF-1, and a small concentration of adsorbed methanol promotes glycerol adsorption. The effect of methanol on the glycerol diffusivity depends on temperature and methanol concentration.