ZEOLITE DEACTIVATION DURING HYDROCARBON REACTIONS: CHARACTERISATION OF COKE PRECURSORS AND ACIDITY, PRODUCT DISTRIBUTION BAODONG WANG A Thesis submitted for the degree of Doctor of Philosophy of the University College London Department of Chemical Engineering University College London London, WC1E 7JE December 2007 brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by UCL Discovery