Silicometallophosphate molecular sieves, method of preparation and use

A process for preparing a microporous crystalline silicometallophosphate material having a three-dimensional framework of at least EO2−, PO2+, [M2+O2]2− and SiO2 tetrahedral units and an empirical composition in the as synthesized and anhydrous basis expressed by an empirical formula of:

• RrMm2+EPxSiyOz
• where M is at least one divalent cation selected from the group consisting of alkaline earth and transition metals, “m” is the mole ratio of M to E and varies from 0.01 to about 1.5, R is an organoammonium cation selected from the group consisting of choline, tetramethylammonium (TMA+), ethyltrimethylammonium (ETMA+), diethyldimethylammonium (DEDMA+), methyltriethylammonium (MTEA+), propyltrimethylammonium (PTMA+), dimethyldiethanolammonium, tetraethylammonium (TEA+), dipropyldimethylammoniun (DPDMA+), tetrapropylammonium (TPA+) cations and mixtures thereof, “r” is the mole ratio of R to E and has a value of about 0.1 to about 2.0, E is a trivalent element selected from the group consisting of aluminum, gallium, iron, boron and mixtures thereof, “x” is the mole ratio of P to E and varies from 0.5 to about 2.5, “y” is the mole ratio of Si to E and varies from 0.01 to about 1.0 and “z” is the mole ratio of O to E and has a value determined by the equation:
• z=(2·m+r+3+5·x+4·y)/2
• and is characterized in that it has the x-ray diffraction pattern having at least the d-spacings and intensities set forth in Table A:
• TABLE A
• 2Θ
• d(Å)
• I/I0
• 6.81-6.61
• 12.98-13.34
• m-vs
• 7.75-7.55
• 11.40-11.70
• m-vs
• 13.36-13.14
• 6.62-6.73
• w-m
• 13.51-13.32
• 6.55-6.64
• w-m
• 14.98-14.68
• 5.91-6.03
• w
• 15.51-15.34
• 5.71-5.77
• w-m
• 18.99-18.79
• 4.67-4.72
• w-m
• 20.26-20.07
• 4.38-4.42
• w-m
• 21.50-21.24
• 4.13-4.18
• w-s
• 24.10-23.84
• 3.69-3.73
• w-m
• 24.30-24.03
• 3.66-3.70
• w-m
• 24.57-24.23
• 3.62-3.67
• w-m
• 26.83-26.51
• 3.32-3.36
• w-m
• 27.59-27.42
• 3.23-3.25
• w-m
• 27.86-27.59
• 3.20-3.23
• w
• 28.68-28.49
• 3.11-3.13
• w
• 28.87-28.59
• 3.09-3.12
• w
• 30.06-29.76
• 2.97-3.00
• w-m
• 30.27-29.96
• 2.95-2.98
• w-m
• 31.03-30.70
• 2.88-2.91
• w-m
• 33.80-33.54
• 2.65-2.67
• w-m
• 34.06-33.80
• 2.63-2.65
• w
• 35.60-35.31
• 2.52-2.54
• w-m
• 36.65-36.34
• 2.45-2.47
• w
• 38.44-38.10
• 2.34-2.36
• w
• the process comprising forming a reaction mixture containing reactive sources of R, E, P, M and Si and heating the reaction mixture at a temperature of about 60° C. to about 200° C., for a time sufficient to form the silicometallophosphate material, the reaction mixture having a composition expressed in terms of mole ratios of the oxides of:
• aR2O:bMO:E2O3:cP2O5:dSiO2:eH2O
• where “a” has a value of about 0.75 to about 16, “b” has a value of about 0.01 to about 3.0, “c” has a value of about 0.8 to about 8, “d” has a value of about 0.01 to about 4, and “e” has a value of about 20 to 800.