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Sulfated zirconia in SBA-15 structures with strong Brønsted acidity as observed by 1H MAS NMR spectroscopy

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In order to prepare high surface area highly acidic catalysts, different weight loadings of ZrO2 were incorporated in the SBA-15 structures which are subsequently sulfated by treating in 0.25 M H2SO4. The catalysts were characterized by means of TEM, XRD, N2 adsorption, and 1H MAS NMR. Brønsted type acidities of sulfated zirconia included SBA-15 materials were identified by a sharp 1H MAS NMR line at 10.6 ppm. The highest acidity was obtained in the 25 mol% ZrO2 included SBA-15 catalyst with a BET surface area of 246 m2/g.

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Acknowledgements

The authors are grateful for the doctoral scholarship and exchange grants from the Scientific and Research Council of Turkey (TUBITAK) through the BDP program. We thank to Jie Fan and Galen Stucky (UC, Santa Barbara) for TEM images. This work has been supported by METU Research Fund Projects (Grant. No: BAP-2006-03-04-05) and by the European Commission through the FP6 project called METU-CENTER under the contract FP6-2004-ACC-SSA-2-17125.

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Authors and Affiliations

  1. Department of Chemical Engineering, Middle East Technical University, Ankara, 06531, Turkey

    Volkan Degirmenci & Deniz Uner

  2. Institute of Experimental Physics II, University of Leipzig, D-04103, Leipzig, Germany

    Özlen Ferruh Erdem & Dieter Michel

  3. Department of Chemistry, Middle East Technical University, Ankara, 06531, Turkey

    Aysen Yilmaz

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  1. Volkan Degirmenci
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  2. Özlen Ferruh Erdem
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  3. Aysen Yilmaz
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  4. Dieter Michel
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  5. Deniz Uner
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Correspondence to Deniz Uner.

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Degirmenci, V., Erdem, Ö.F., Yilmaz, A. et al. Sulfated zirconia in SBA-15 structures with strong Brønsted acidity as observed by 1H MAS NMR spectroscopy. Catal Lett 115, 79–85 (2007). https://doi.org/10.1007/s10562-007-9078-9

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  • DOI: https://doi.org/10.1007/s10562-007-9078-9

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