Synthesis of novel composite materials via the deposition of precious metals onto protonated titanate (TiO2) nanotubes
Walsh, F. C., Bavykin, D. V., Torrente Murciano, L., Lapkin, A. A. and Cressey, B. A., 2006. Synthesis of novel composite materials via the deposition of precious metals onto protonated titanate (TiO2) nanotubes. Transactions of the Institute of Metal Finishing, 84 (6), pp. 293-299.
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Pd(II) and Pd(0) catalysts supported onto titanate nanotubes (H2Ti3O7) were prepared by an ion-exchange technique. The catalysts are characterised by narrow size distribution of metal nanoparticles on the external surface of the nanotubes. Pd(II) catalysts show high selectivity toward double-bond migration reaction versus hydrogenation in linear olefins. The catalytic activity exhibits a volcano-type dependence on the metal loading, with the maximum activity observed at ca. 8 wt%. The Pd(II) was shown to be rapidly reduced to Pd(0) by appropriate choice of solvent. Prereduced Pd(0) catalysts were found to be less active toward double-bond migration and more selective toward hydrogenation. The DBM reaction was faster in protic solvents, such as methanol or ethanol.
|Creators||Walsh, F. C., Bavykin, D. V., Torrente Murciano, L., Lapkin, A. A. and Cressey, B. A.|
|Departments||Faculty of Engineering & Design > Chemical Engineering|
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