Factors that influence water adsorption in silicalite were studied. It was found that the energy of adsorption becomes less stable as water molecules are loaded in the silicalite structure. A structure with one water molecule was found to have an energy of -14.42 KJ/mol while one with three molecules was -8.6 KJ/mol. It was also demonstrated that water prefers to diffuse through the larger 10 ring channels as opposed to the small 4 ring channels.