AlITQ-6 and TiITQ-6: Synthesis, Characterization, and Catalytic Activity We thank the Spanish CICYT for financial support (project MAT97-1016-C02-01 and project MAT97-1207-C03-01). U.D. and M.E.D. thank the M.E.C. and M.E.A., respectively, for funding their doctoral fellowships |