... Pergamon Press Ltd. SURFACE PHOTOCHEMISTRY: THE PHOTO- CHLORINATION OF AROMATIC HYDROCARBONS WITH FERRIC CHLORIDE ON ALUMINA Masato Hasebe, Catherine Lazare, Paul de Mayo* and Alan C. Weedon Photochemistry Unit, Department of Chemistry, University of Western Ontario, London, Ontario. N6A 5B7. Canada SUMMARY: Irradiation ...