Using quasi-elastic neutron scattering techniques, it was found that the diffusivity of butane in ZSM-5 at 300K was 1.0 x 10-5cm2/s, with an activation energy of 5kJ/mol. The diffusivity of hexane at 373K was 6.9 x 10-6cm2/s.

Translational Mobility of n-Butane and n-Hexane in ZSM-5 Measured by Quasi-Elastic Neutron Scattering. H.Jobic, M.Bee, J.Caro: Proceedings of the 9th International Zeolite Conference, Eds. R.Von Ballmoos, J.B.Higgins, M.M.J.Treacy, Butterworth-Heinemann, 1992, 121