Synthesis of novel composite materials via the deposition of precious metals onto protonated titanate (TiO2) nanotubes

F C Walsh, D V Bavykin, Laura Torrente Murciano, Alexei A Lapkin, B A Cressey

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)293-299
Number of pages7
JournalTransactions of the Institute of Metal Finishing
Volume84
Issue number6
DOIs
Publication statusPublished - 2006

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