Preparation of small-pored crystalline titanium molecular sieve zeolites

A process for the preparation of a crystalline titaniumsilicate molecular sieve zeolite having a pore size of approximately 3-5 Anstrom units which comprises heating a reaction mixture containing a titanium source, a source of silica, a source of alkalinity, water and, optionally, an alkali metal fluoride having a composition in terms of mole ratios falling within the following ranges:

• SiO.sub.2 /Ti:
• 1-10
• H.sub.2 O/SiO.sub.2 :
• 2-100
• M.sub.n /SiO.sub.2 :
• 0.1-10
• wherein M indicates the cations of valence n derived from the source of alkalinity and potassium fluoride to a temperature of from about 100.degree. C. to 300.degree. C. for a period of time ranging from about 8 hours to 40 days while controlling the pH within the range of 10.45-11.0.+-.0.1, said crystalline titaniumsilicate having a composition in terms of mole ratios of oxides as follows:
• 1.0.+-.0.25 M.sub.2/n O:
• TiO.sub.2 :
• y SiO.sub.2 :
• z H.sub.2 O
• wherein M is at least one cation having a valence of n, y is from 1.0 to 100, and z is from 0 to 100 and characterized by an X-ray powder diffraction pattern having the lines and relative intensities set forth in Table I below:
• TABLE 1 ______________________________________ d-SPACING (ANGS.) I/I.sub.o ______________________________________ 11.65 .+-. 0.25 S-VS 6.95 .+-. 0.25 S-VS 5.28 .+-. .15 M-S 4.45 .+-. .15 W-M 2.98 .+-. .05 VS Where, VS = 50-100 S = 30-70 M = 15-50 W = 5-30 ______________________________________