Crystalline metal aluminophosphates
AssigneeUnion Carbide Corporation
InventorsStephen T. Wilson, Edith M. Flanigen
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Abstract
Novel class of crystalline microporous metal aluminophosphate compositions containing as lattice constituents in addition to AlO.sub.2 and PO.sub.2 structural units, one or a mixture of two or more of the metals Mg, Mn, Co and Zn in tetrahedral coordination with oxygen atoms. These compositions are prepared hydrothermally using organic templating agents and are suitably employed as catalysts or adsorbents.
Claims55
Crystalline metal aluminophosphates having a three-dimensional microporous framework structure of MO.sub.2.sup.-2, AlO.sub.2.sup.- and PO.sub.2.sup.+ tetrahedral units and having an empirical chemical composition on an anhydrous basis expressed by the formula
- mR:
- (M.sub.x Al.sub.y P.sub.z)O.sub.2
- wherein "R" represents at least one organic templating agent present in the intracrystalline pore system;
- "m" represents the moles of "R" present per mole of (M.sub.x Al.sub.y P.sub.z)O.sub.2 and has a value of from zero to 0.3, "M" represents at least one metal of the group magnesium, manganese, zinc and cobalt, "x", "y" and "z" represent the mole fraction of the metal "M", aluminum and phosphorus respectively present as tetrahedral oxides, said mole fractions being such that they are within the tetragonal compositional area defined by points A, B, C and D of the ternary diagram which is FIG. 1 of the drawings.
Dependencies are inferred from the claim text.