Titanium-containing mesoporous molecular sieves for catalytic oxidation of aromatic compounds (original) (raw)

Nature volume 368, pages 321–323 (1994)Cite this article

Abstract

TITANIUM silicalite is an effective molecular-sieve catalyst for the selective oxidation of alkanes, the hydroxylation of phenol and the epoxidation of alkenes in the presence of H2O2 (refs 1–3). The range of organic compounds that can be oxidized is greatly limited, however, by the relatively small pore size (about 0.6 nm) of the host framework4. Large-pore (mesoporous) silica-based molecular sieves have been prepared recently by Kresge _et al_l5–7 and Kuroda _et al_8.; the former used a templating approach in which the formation of an inorganic mesoporous structure is assisted by self-organization of surfactants, and the latter involved topochemical rearrangement of a layered silica precursor. Here we describe the use of the templating approach to synthesize mesoporous silica-based molecular sieves partly substituted with titanium—large-pore analogues of titanium silicalite. We find that these materials show selective catalytic activity towards the oxidation of 2,6-ditert-butyl phenol to the corresponding quinone and the conversion of benzene to phenol.

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Author notes

  1. Thomas J. Pinnavaia: To whom correspondence should be addressed

Authors and Affiliations

  1. Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, East Lansing, Michigan, 48824, USA
    Peter T. Tanev, Malama Chibwe & Thomas J. Pinnavaia

Authors

  1. Peter T. Tanev
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  2. Malama Chibwe
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  3. Thomas J. Pinnavaia
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Tanev, P., Chibwe, M. & Pinnavaia, T. Titanium-containing mesoporous molecular sieves for catalytic oxidation of aromatic compounds.Nature 368, 321–323 (1994). https://doi.org/10.1038/368321a0

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