TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The ionic porogen is removed by calcining. The hydrolyzed compound comprising titanium is derived from titanium tetrachloride and/or titanium oxychloride. The reaction mixture is formed by the steps, in order, of combining the base and the solvent to form a solution or a mixture and adding the titanium starting material to the solution or mixture. The reaction mixture is formed by combining the titanium starting material and the solvent to form a solution or a mixture and adding the base to the solution or mixture. More than about 50 (preferably more than about 90) weight percent of the halide salt precipitates from the reaction mixture (where the weight percent is based on the total amount of the halide salt that can form from the reaction mixture). The step of removing the saturated liquid medium comprises drying and calcining. (I) is treated with silica and/or alumina. (I) is treated with an organic coating agent. The organic coating agent is a silane, a siloxane and/or a polysiloxane.Preferred Components: The ionic porogen is a halide salt (ammonium halide, tetramethyl ammonium halide and/or tetraethyl ammonium halide) or preferably ammonium chloride. The mesoporous oxide is crystalline. The oxide of titanium further comprises a dopant (a transition metal or a group IIA, IIIA, IVA, or VA metal; preferably germanium (Ge), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), nickel (Ni), copper (Cu), aluminum (Al), zirconium (Zr), hafnium (Hf), silicon (Si), niobium (Nb), tantalum (Ta), iron (Fe), tin (Sn), cobalt (Co), zinc (Zn), molybdenum (Mo), tungsten (W), vanadium (V), chromium (Cr), manganese (Mn), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), gallium (Ga) or indium (In)). The titanium starting material is titanium tetrachloride and/or titanium oxychloride. The base is ammonium hydroxide, ammonium carbonate, ammonium bicarbonate, tetramethyl ammonium hydroxide and/or tetraethyl ammonium hydroxide. The solvent is ethanol, n-propanol, i-propanol, dimethyl acetamide, alcoholic ammonium halide and/or aqueous ammonium halide. The halide is chloride, bromide and/or iodide. The liquid medium is the liquid portion of the mixture that comprises a solvent. The liquid medium comprises a dissolved salt. The halide salt is ammonium halide, tetramethyl ammonium halide and/or tetraethyl ammonium halide. EXAMPLE - Titanium chloride (20 g; 50 wt.%) in water were added to aqueous ammonium chloride (about 250 ml) solution. With continued stirring, ammonium hydroxide (30 ml) were added to the titanium chloride/ammonium chloride solution. The pH of the slurry was about 7. The resulting slurry was stirred for 60 minutes. The solid was collected by suction filtration and dried under an infrared heat lamp to yield 14.9 g of white powder. The powder was then transferred to an alumina crucible and heated uncovered from room temperature to 450degreesC for one hour, and held at 450degreesC for an additional hour to ensure removal of the volatile ammonium chloride. The crucible and its contents were removed from the furnace and cooled naturally to room temperature. The product obtained was a calcined mesoporous nanocrystalline titanium oxide powder having a high surface area and high porosity.