Low-temperature separation of hydrogen and methane in SSF membranes

Experiments were conducted with hydrogen and methane in a SSF (Selective Surface Flow) membrane to determine the effect of low temperatures on separation. It was proposed that low temperatures would increase the surface flow of methane, decrease the permeation of hydrogen and improve separation. Experiments were conducted with mixtures containing 25%, 50% and 75% methane (balance hydrogen) at temperatures ranging from ;Experiments were also conducted with a mixture containing 49% hydrogen, 49% methane and 2% ethane to determine the effect of a more polar feed mixture.;A Langmuir adsorption model was developed to predict the performance of the SSF membrane by modelling the SSF membrane layer as a Type 1 adsorbent. (Abstract shortened by UMI.).