Ti-containing mesoporous catalysts were prepared by chemical vapor deposition (CVD) of TiCl4 on silica MCM-41 in the 700-900 degreesC temperature range. These samples were characterized (with XRD, ICP, nitrogen adsorption, FT-IR, ESCA, and TEM) and evaluated for the epoxidation of propylene with two alkyl hydroperoxides. The increase of CVD temperature resulted in the decrease of titanium content, catalyst hydroxyl population, crystallinity, and surface area. Catalyst selectivity to the desired product - propylene oxide - was highly sensitive to the deposition temperature. The best Ti/MCM-41 catalyst was prepared at the temperature of 800 degreesC, which had the maximum propylene oxide yield of 94.3%. (C) 2004 Elsevier B.V. All rights reserved.