Silicalite-1 Membranes Synthesis, Characterization, CO 2 /N 2 Separation and Modeling Muhammad Tawalbeh Thesis submitted to the Faculty of Graduate and Postdoctoral Studies In partial fulfillment of the requirements for the Doctorate in Philosophy degree in Chemical and Biological Engineering Department of Chemical and Biological Engineering Faculty of Engineering University of Ottawa © Muhammad Tawalbeh, Ottawa, Canada 2014