초록 ▼

Novel class of crystalline microporous metal aluminophosphate compositions containing as lattice constituents in addition to AlO2 and PO2 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 h

Novel class of crystalline microporous metal aluminophosphate compositions containing as lattice constituents in addition to AlO2 and PO2 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.

대표청구항 ▼

Crystalline metal aluminophosphates having a three-dimensional microporous framework structure of MO2-2, AlO2-and PO2+tetrahedral units and having an empirical chemical composition on an anhydrous basis expressed by the formula mR: (MxAlyPz)O2 wherein “R”represents at least one organic templating ag

Crystalline metal aluminophosphates having a three-dimensional microporous framework structure of MO2-2, AlO2-and PO2+tetrahedral units and having an empirical chemical composition on an anhydrous basis expressed by the formula mR: (MxAlyPz)O2 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 (MxAlyPz)O2 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. Process for preparing a crystalline metal aluminophosphate of claim 1 which comprises forming a reaction mixture composition expressed in terms of molar oxide ratios as follows: aR: (MxAlyPz)O2:bH2O wherein “R”is an organic templating agent; “a”has a value great enough to constitute an effective concentration of “R”and is within the range of greater than zero to 3; “b”has a value of from zero to 500; “M”represents a metal of the group zinc, magnesium, manganese and cobalt, “x”, “y”and “z”represent the mole fractions, respectively, of “M”, aluminum and phosphorus in the (MxAlyPz)O2 constituent, and each has a value of at least 0.01, and being within the hexagonal compositional area defined by points E, F, G, H. I, and J which is FIG. 3 of the drawings, and crystallizing the reaction mixture thus formed at a temperature of from 100°C. to 225°C. until crystals of the metal aluminophosphate are formed.