Supported Tetrahedral Oxo-Sn Catalyst

Single Site, Two Modes of Catalysis

Evgeny V. Beletskiy, Xianliang Hou, Zhongliang Shen, James R. Gallagher, Jeffrey T. Miller, Yuyang Wu, Tiehu Li, Mayfair C. Kung, Harold H Kung

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Mild calcination in ozone of a (POSS)-Sn-(POSS) complex grafted on silica generated a heterogenized catalyst that mostly retained the tetrahedral coordination of its homogeneous precursor, as evidenced by spectroscopic characterizations using EXAFS, NMR, UV-vis, and DRIFT. The Sn centers are accessible and uniform and can be quantified by stoichiometric pyridine poisoning. This Sn-catalyst is active in hydride transfer reactions as a typical solid Lewis acid. However, the Sn centers can also create Brønsted acidity with alcohol by binding the alcohol strongly as alkoxide and transferring the hydroxyl H to the neighboring Sn-O-Si bond. The resulting acidic silanol is active in epoxide ring opening and acetalization reactions.

Original languageEnglish
Pages (from-to)4294-4297
Number of pages4
JournalJournal of the American Chemical Society
Volume138
Issue number13
DOIs
Publication statusPublished - Apr 20 2016

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Catalysis
Alcohols
Catalyst poisoning
Lewis Acids
Catalysts
Ozone
Epoxy Compounds
Acidity
Hydrides
Silicon Dioxide
Hydroxyl Radical
Pyridine
Calcination
Poisoning
Silica
Nuclear magnetic resonance
Acids
pyridine
silanol

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Supported Tetrahedral Oxo-Sn Catalyst : Single Site, Two Modes of Catalysis. / Beletskiy, Evgeny V.; Hou, Xianliang; Shen, Zhongliang; Gallagher, James R.; Miller, Jeffrey T.; Wu, Yuyang; Li, Tiehu; Kung, Mayfair C.; Kung, Harold H.

In: Journal of the American Chemical Society, Vol. 138, No. 13, 20.04.2016, p. 4294-4297.

Research output: Contribution to journalArticle

Beletskiy, EV, Hou, X, Shen, Z, Gallagher, JR, Miller, JT, Wu, Y, Li, T, Kung, MC & Kung, HH 2016, 'Supported Tetrahedral Oxo-Sn Catalyst: Single Site, Two Modes of Catalysis', Journal of the American Chemical Society, vol. 138, no. 13, pp. 4294-4297. https://doi.org/10.1021/jacs.5b13436
Beletskiy EV, Hou X, Shen Z, Gallagher JR, Miller JT, Wu Y et al. Supported Tetrahedral Oxo-Sn Catalyst: Single Site, Two Modes of Catalysis. Journal of the American Chemical Society. 2016 Apr 20;138(13):4294-4297. https://doi.org/10.1021/jacs.5b13436
Beletskiy, Evgeny V. ; Hou, Xianliang ; Shen, Zhongliang ; Gallagher, James R. ; Miller, Jeffrey T. ; Wu, Yuyang ; Li, Tiehu ; Kung, Mayfair C. ; Kung, Harold H. / Supported Tetrahedral Oxo-Sn Catalyst : Single Site, Two Modes of Catalysis. In: Journal of the American Chemical Society. 2016 ; Vol. 138, No. 13. pp. 4294-4297.
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