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US 7,682,599 B2Granted
Method for preparing NES-type zeolites using novel structure directing agents
AssigneeChevron U.S.A. Inc.
InventorAllen W. Burton, Jr.
Life of this patent
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Abstract
The present invention is directed to a process for preparing NES-type zeolites using novel nitrogen-based structure directing agents. The structure directing agents used in preparing NES-type zeolites selected from the group consisting of 1,4-bis(N,N-dimethylcyclohexylammonium) butane dications and 1,5-bis(N,N-dimethylcyclohexylammonium) pentane dications.
Claims10
A method for preparing a NES-type zeolite, comprising:
- (a) preparing a reaction mixture comprising (1) at least one active source of an oxide selected from the group consisting of oxides of silicon, germanium, and a mixture thereof;
- (2) at least one active source of an oxide selected from the group consisting of oxides of aluminum, boron, iron, gallium, and mixtures thereof;
- (3) at least one active source of an element selected from Groups 1 and 2 of the Periodic Table;
- (4) hydroxide ions;
- (5) a structure directing agent selected from the group consisting of 1,4-bis(N,N-dimethylcyclohexylammonium)butane dications and 1,5-bis(N,N-dimethylcyclohexylammonium)pentane dications;
- and (6) water;
- and
- (b) maintaining the reaction mixture under conditions sufficient to form crystals of the NES-type zeolite.
5 more elements
Dependencies are inferred from the claim text.