Ethylene physisorption on amorphous carbon

Grand Canonical Monte Carlo simulations of ethylene physisorption on amorph ous carbon are studied at temperatures between 150 and 300 K. Ethylene mole cules are described as a set of 6 Lennard-Jones interaction sites and the q uadrupole moment is taken into consideration to calculate lateral interacti ons. The cross-sectional area and average orientations of the adsorbate are also discussed. The distributions of molecules according to the gas-solid and gas-gas energies are analyzed as well as the density profiles. The near est neighbor distance in the adsorbed phase at different surface coverage i s analyzed. Several comparisons are made with nitrogen adsorbed on the same solid.