Characterization and Stability of Porous Structure of Titanium-Silicalite by Sorption Methods

Leofanti, G.; Genoni, F.; Padovan, M.; Petrini, G.; Trezza, Giovanni; Zecchina, Adriano

doi:10.1016/s0167-2991(08)61361-0

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…The treated samples show a new feature centered near 40,000 cm À1 and evident erosion of the tetrahedral Ti(IV) absorption. The new species is consistent with a Ti center having an enlarged coordination sphere [17,18] but probably still isolated in the silicalite matrix while no aggregated TiO 2 species seem to be formed upon the treatment.…”

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confidence: 52%

Oxidation of Benzene to Phenol with Hydrogen Peroxide Catalyzed by a Modified Titanium Silicalite (TS‐1B)

et al. 2007

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The hydroxylation of benzene to phenol with hydrogen peroxide was investigated using different solvents and a series of catalysts, obtained by modification of titanium silicalite (TS-1). The best results were obtained after post-synthesis treatment of TS-1 with NH 4 HF 2 and H 2 O 2 . The new catalyst (TS-1B), used in the presence of a particular co-solvent (sulfolane) is able to protect the produced phenol from over-oxidation and dramatically enhanced the selectivity of the reaction.

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confidence: 52%

Oxidation of Benzene to Phenol with Hydrogen Peroxide Catalyzed by a Modified Titanium Silicalite (TS‐1B)

et al. 2007

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“…The spectra in (a), at the increasing temperature, do not show among them any particular difference in terms of position (205 nm) and intensity of LMCT transition [21], pointing to that titanium is in tetrahedral coordination and isomorphous to Si(IV) in the silicalite framework. Moreover, after heating at 1073 K (C2) any absorption increase in the 250-350 nm range has not been observed that could indicate the formation of extra-framework TiO 2 nanoclusters via destructuration of isomorphous Ti(VI) [22]. The treatment with In addition to these samples, others were prepared to understand how zinc coordinates in the TS-1 framework.…”

Section: Xrpdmentioning

confidence: 99%