Grand canonical ensemble Monte Carlo (GCEMC) method has been used for adsorption storage of methane, the main component in natural gas, in pillared layered material at T=300 K . Pillared layered material is modeled by the approach of Yi et al . with the uniform drstribution of pillars. Methane is described as a spherical Lennard - Jones molecule, and 10-4-3 potential from Steele is used for representing the interaction between methane and a carbon wall in the GCEMC simulation. The local density profiles and the adsorption isotherms of methane adsorbed in pillared layered material with 4 various porosities in the pores of width 1.36 nm were obtained. Consequently, an optimum porosity of the pillared layered material is recommended for the adsorption storage of methane.

Key words: MICROPOROUS, METHANE, POROUS MATERIALS, OIL-GAS STORAGE, ADSORPTION, NATURAL GAS, MONTE CARLO SIMULATION