Crystalline silicoaluminophosphates

  • US 4,440,871 A
  • Filed: 07/26/1982
  • Issued: 04/03/1984
  • Est. Priority Date: 07/26/1982
  • Status: Expired due to Term
First Claim
Patent Images

1. Microporous crystalline silicoaluminophosphates the pores of which are uniform and have nominal diameters of greater than about 3 Angstroms and whose essential empirical chemical composition in the as-synthesized and anhydrous form is

  • space="preserve" listing-type="equation">mR;

    (Si.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" has a value of from 0.02 to 0.3;

"m" represents the moles of "R" present per mole of (Six Aly Pz)O2 ;

"x", "y" and "z" represent the mole fractions of silicon, aluminum and phosphorus respectively, present as tetrahedral oxides, said mole fractions being such that they are within the pentagonal compositional area defined by points ABCD and E of the ternary diagram which is FIG. 1 of the drawings.

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