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US 11,565,943 B2Granted
Synthesis of ton framework type molecular sieves
AssigneeChevron U.S.A. Inc.
InventorsJoel Edward Schmidt, Adeola Florence Ojo
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Abstract
A method is disclosed making a molecular of TON framework type having unique properties. The method uses 1,3,4-trimethylimidazolium cations as a structure directing agent and a combined source of silicon and aluminum selected from alumina-coated silica and aluminosilicate zeolites. The obtained molecular sieve can be used in processes for dewaxing paraffinic hydrocarbon feedstocks.
Claims12
A method of synthesizing a molecular sieve having a TON framework, the method comprising:
- (1) forming a reaction mixture comprising:
- (a) a combined source of silicon and aluminum, where the combined source of silicon and aluminum is selected from the group consisting of an alumina-coated silica, an aluminosilicate zeolite having an FAU framework, and a mixture thereof;
- (b) a structure directing agent (Q) comprising 1,3,4-trimethylimidazolium cations;
- (c) a source of hydroxide ions;
- (d) water;
- and
- (e) seeds;
- and
- (2) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve having a TON framework.
6 more elements
Dependencies are inferred from the claim text.