Synthetic mesoporous crystalline materials

US5264203A · kind A · utility

Assignee

• Mobil Oil Corporation · US

Inventors

• Jeffrey S. Beck · Princeton, US
• Charles T. Kresge · West Chester, US
• Michael E. Leonowicz · Medford Lakes, US
• Wieslaw J. Roth · Sewell, US
• James C. Vartuli · West Chester, US

Key dates

• Filing date: Jul 24, 1991
• Grant date: Nov 23, 1993
• Expiry date: Jul 24, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2229/42
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to a new synthetic composition of ultra-large pore crystalline material, e.g., [metallo]silicoaluminophosphate, having a composition, expressed on an anhydrous basis as follows: EQU M.sub.n/q (W.sub.a X.sub.b Y.sub.c Z.sub.d O.sub.h) wherein M is one or more ions; n is the charge of the composition excluding M expressed as oxides; q is the weighted molar average valence of M; n/q is the number of moles or mole fraction of M; W is one or more divalent elements; X is one or more trivalent elements; Y is one or more tetravalent elements; Z is one or more pentavalent elements; a, b, c, and d are mole fractions of W, X, Y, and Z, respectively; (a+b+c+d)=1; a .gtoreq. 0; b, c, and d are each>0; and h is a number of from 1 to 2.5. The crystalline material is prepared by i) crystallizing a reaction mixture comprising sources of W, X, Z and an organic directing agent; ii) contacting the product of i) with a reaction mixture comprising sources of Y and organic directing agent; and iii) maintaining the mixture of ii) under conditions sufficient to form said composition of matter. The composition is suited to use for catalytic conversion of organic compounds.