Zeolitic materials including paired Lewis acid catalytic sites
AssigneeOhio State Innovation Foundation
InventorsNicholas Brunelli, Nitish Deshpande, Aamena Parulkar
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Abstract
Disclosed are zeolitic materials that include a microporous crystalline framework substituted with one or more paired Lewis acid sites. Each of the one or more paired Lewis acid sites within the zeolitic material can comprise a first Lewis acid metal center and a second Lewis acid metal center. The first Lewis acid metal center and the second Lewis acid metal center can be separated by three or fewer atoms within the crystalline framework. Also provided herein are methods of making these zeolitic materials as well as methods of using these zeolitic materials as catalysts.
Claims20
A zeolitic material comprising a microporous crystalline framework substituted with one or more paired Lewis acid sites,
- wherein each of the one or more paired Lewis acid sites comprises a first Lewis acid metal center and a second Lewis acid metal center, and
- wherein the first Lewis acid metal center and the second Lewis acid metal center are separated by three or fewer atoms within the crystalline framework.
A method for preparing a zeolitic material comprising a microporous crystalline framework isomorphously substituted with one or more paired Lewis acid sites, the method comprising
- (i) combining, in aqueous solution, a silicon source, a paired Lewis acid monomer, and optionally a structure-directing agent to form a precursor gel;
- (ii) reacting the precursor gel under conditions effective to form a zeolitic precursor;
- and
- (iii) treating the zeolitic precursor to form the zeolitic material comprising the microporous crystalline framework isomorphously substituted with one or more paired Lewis acid sites.
Dependencies are inferred from the claim text.