Synthesis of molecular sieves having the chabazite framework...

Details Synthesis of molecular sieves having the chabazite framework... Synthesis of molecular sieves having the chabazite framework...

2005-08-18

2011-11-01

Brunsman, David M. (Department: 1732)

Chemistry of inorganic compounds

Zeolite

Organic compound used to form zeolite

C423S701000, C423S702000, C423S703000, C423S705000, C423S706000, C423S708000, C423S709000

Reexamination Certificate

active

08048402

ABSTRACT:
The synthesis of a crystalline aluminophosphate or silicoaluminophosphate molecular sieve having a chabazite-type framework type is conducted in the presence of an organic directing agent having the formula (I)in-line-formulae description="In-line Formulae" end="lead"?[R1R2R3N—R4]+X−  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein R1, R2and R3are independently selected from the group consisting of alkyl groups having from 1 to 3 carbon atoms and hydroxyalkyl groups having from 1 to 3 carbon atoms; R4is selected from the group consisting of 4- to 8-membered cycloalkyl groups, optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms; 4- to 8-membered heterocyclic groups having from 1 to 3 heteroatoms, said heterocyclic groups being optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms and the heteroatoms in said heterocyclic groups being selected from the group consisting of O, N, and S; and aromatic groups optionally substituted by 1 to 3 alkyl groups, said alkyl groups having from 1 to 3 carbon atoms; and X−is an anion.

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