Ti Coordination in Titanium Silicalite-1

Ti Coordination in Titanium Silicalite-1

Progressive isomorphous incorporation of TiIV (or BIII) heteroatoms into the MFI structure of as-synthesized silicalite-1 caused a decrease in the amount of siloxy groups (anions), requisite for counter-balancing the structural directing agent (cation), as determined using 1H MAS NMR to quantify the...

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Veröffentlicht in:Journal of the American Chemical Society 2006-02, Vol.128 (5), p.1450-1451
Hauptverfasser: Parker, Wallace O, Millini, Roberto
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Exact sciences and technology
General and physical chemistry
Ion-exchange
Surface physical chemistry
Zeolites: preparations and properties
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Zusammenfassung:Progressive isomorphous incorporation of TiIV (or BIII) heteroatoms into the MFI structure of as-synthesized silicalite-1 caused a decrease in the amount of siloxy groups (anions), requisite for counter-balancing the structural directing agent (cation), as determined using 1H MAS NMR to quantify the silanol protons H-bonded to the siloxy oxygen. This revealed the negative charge on the incorporated heteroatoms, identifying them as TiO5 (or BO4) sites.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0576785