TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation (Claimed): The crystalline titanium silicate molecular sieve is prepared by providing a source of silicon, a source of titanium (Ti), a source of alkalinity, a metal salt, and a halide anion source other than fluorine, to form a composition where the mole ratio of silicon dioxide (SiO2)/Ti is greater than 1, water (H2O)/SiO2 is greater than 2, and M1/SiO2 is 0.1-10; and processing the composition at a temperature and for a period to produce the molecular sieve. Preferred Preparation: Barium is exchanged for cations M1 in the titanium silicate molecular sieve. Processing comprises heating within 100-300degreesC for 8 hours-40 days. The process further comprises processing while controlling pH values within 10.45-11.0plus minus 0.1. Preferred Component: The molecular sieve has a crystal structure having similar lattice spacings as zorite. M2 in the ion-exchanged titanium silicate molecular sieve comprises barium, sodium, and/or potassium. The source of silicon is silica, silica hydrosol, silica gel, silicic acid, alkoxides of silicon, and/or alkali metal silicates. The metal salt is the halide anion source. It is a group 1 metal halide, which is sodium or potassium chloride and/or iodide. The source of alkalinity is an alkali metal hydroxide, which is a group 1 metal hydroxide, preferably sodium hydroxide or potassium hydroxide. The source of titanium is a titanium halide, preferably titanium chloride (TiCl3). The additional material(s) is an inert material and/or an active material. It is synthetic zeolite, naturally occurring zeolite, desiccant, catalyst, clay, silica, and/or metal oxide. The clay is montmorillonite or kaolin clay. It is a sub-bentonites or kaolin commonly known as Dixie(RTM: Not defined), McNamee(RTM: Not defined), Georgia, and Florida, or others in which the main constituent is halloysite, kaolinite, dickite, nacrite, or anauxite. The additional material is a porous matrix material, which is silica-alumina, silica-magnesia, silica-zirconia, silica-thoria, silica-berylia, silica-titania, as well as ternary compositions, such as silica-alumina-thoria, silica-alumina-zirconia, silica-alumina-magnesia, and silica-magnesia-zirconia. The feed fluid mixture comprises nitrogen and methane, and the product fluid is enriched in methane. Preferred Parameter: A peak(s) of the crystalline titanium silicate molecular sieve X-ray diffraction pattern has an intensity greater than an intensity of a peak at a d-spacing of 6.96 Angstrom. The titanium silicate molecular sieve has a pore size of greater than 2-5 Angstrom. Preferred Composition: The titanium silicate molecular sieve composition comprises greater than 1-90, preferably 2-50 wt.% titanium silicate molecular sieve. Preferred Definitions:    w=less than 1, greater than 0.01;    X=Cl;    z=5-40;    y=greater than or equal to 2, and up to 5;and    M1=international union of pure and applied chemistry (IUPAC) classification groups 1-3 metals, group 8-12 metals, alkaline earth metals, and/or rare earth metals, preferably Ba, Na, and K.    EXAMPLE - Sodium silicate (25.1 g), sodium hydroxide (4.6 g), potassium chloride (3.0 g), and titanium chloride (TiCl3) (16.3 g) solution were combined and processed in an autogenous pressure autoclave for 48 hours at 200degreesC to produce a crystalline precursor molecular sieve material. The crystalline precursor material was washed and dried. An ion exchange reaction was then conducted by providing an aqueous mixture comprising precursor molecular sieve material (10 g), barium chloride (BaCl2) (20 g), and water (40 g) for a period without stirring. The aqueous mixture was then heated at 200degreesC to form the barium exchanged titanium silicate molecular sieve.