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US 9,643,854 B2Granted
Method for making MAZ framework type zeolites
AssigneeChevron U.S.A. Inc.
InventorDan Xie
Life of this patent
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Abstract
A method for preparing an MAZ framework type zeolite is disclosed using a trimethylphenylammonium cation as a structure directing agent. The MAZ framework type zeolite, in its as-synthesized form, contains in its intracrystalline pores the trimethylphenylammonium cation. The resultant MAZ framework type zeolite crystals have an average crystallite size of greater than 5 μm.
Claims11
A method for preparing an MAZ framework type zeolite, comprising:
- (a) preparing a reaction mixture containing:
- (1) at least one source of silicon;
- (2) at least one source of aluminum;
- (3) at least one source of an element selected from Groups 1 and 2 of the Periodic Table;
- (4) hydroxide ions;
- (5) a trimethylphenylammonium cation;
- and
- (6) water;
- and
- (b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the MAZ framework type zeolite.
7 more elements
An MAZ framework type zeolite having a composition, as-synthesized and in its anhydrous state, in terms of mole ratios, as follows:
- SiO2/Al2O3
- 5 to 10
- Q/SiO2
- 0.015 to 0.15
- M/SiO2
- 0.010 to 0.20
- wherein Q is a trimethylphenylammonium cation and M is selected from the group consisting of elements from Groups 1 and 2 of the Periodic Table.
4 more elements
Dependencies are inferred from the claim text.