Chemistry of inorganic compounds – Zeolite – Isomorphic metal substitution
Reexamination Certificate
2007-09-07
2009-12-22
Hill, Jr., Robert J (Department: 1797)
Chemistry of inorganic compounds
Zeolite
Isomorphic metal substitution
C423S704000, C208S046000
Reexamination Certificate
active
07635462
ABSTRACT:
The present invention relates to new methods of making crystalline materials isostructural to ITQ-21, as well as to new crystalline materials obtainable by such methods, and their use in hydrocarbon conversion processes. In one of its aspects, the invention relates to a method of making a crystalline material iso-structural to ITQ-21, the method comprising:(a) providing a synthesis mixture comprising water, at least one source of germanium, at least one source of a tetravalent element X other than germanium, at least one structure directing agent R, optionally at least one source of trivalent element Y and optionally at least one source of fluoride, wherein the structure directing agent R is a compound of formula C1C2R1R2N+A−(I),in whichC1and C2each independently represent a substituted or unsubstituted cyclohexyl or cyclopentyl group,R1and R2each independently represent a methyl group, an ethyl group or a propyl group, or R1and R2together with the nitrogen atom they are connected to form a ring containing 5 or 6 atoms, andA represents hydroxyl, fluorine, chlorine, bromine or iodine,(b) forming said crystalline material from the synthesis mixture;(c) recovering said crystalline material.
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Cao Guang
Shah Matu J.
ExxonMobil Research and Engineering Company
Hill, Jr. Robert J
McCaig Brian
Montalvo Liza
Purwin Paul E.
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