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TiO2 nanotube-supported ruthenium(III) hydrated oxide: a highly active catalyst for selective oxidation of alcohols by oxygen

TiO2 nanotube-supported ruthenium(III) hydrated oxide: a highly active catalyst for selective oxidation of alcohols by oxygen
TiO2 nanotube-supported ruthenium(III) hydrated oxide: a highly active catalyst for selective oxidation of alcohols by oxygen
Ruthenium(III) hydrated oxide was deposited onto the surface of TiO2 nanotubes via ion exchange followed by alkali treatment. The catalytic activity of Ru(III)/TiO2 catalyst for the selective oxidation of alcohols by oxygen was studied in a continuous multichannel, compact reactor. It was found that the activity of Ru(III)/TiO2 (turnover frequency [TOF] ? 450 h?1) is greater than that of a recently reported Ru(III)/Al2O3 catalyst (TOF = 335 h?1), and that the ruthenium loading could exceed 8 wt% without any significant loss of specific catalytic activity. High-resolution transmission electron microscopy and X-ray diffraction data show that ruthenium is highly dispersed on both the inner and the outer surfaces of the mesoporous TiO2 nanotubes with the diameter of nanoparticles between 1.2 and 2.4 nm, and is easily accessible by reactant molecules.
ru(oh)3, ruox.nh2o, nanostructures, titration, deactivation, nanotubular tio2
0021-9517
10-17
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Lapkin, Alexei A.
e5550045-9bdc-4cca-873a-16c2f37a64c8
Plucinski, Pawel K.
d3730fd2-65ab-49bd-adb0-f56600012e10
Friedrich, Jens M.
fe49937a-4b87-4f79-8d63-969954d6334b
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Lapkin, Alexei A.
e5550045-9bdc-4cca-873a-16c2f37a64c8
Plucinski, Pawel K.
d3730fd2-65ab-49bd-adb0-f56600012e10
Friedrich, Jens M.
fe49937a-4b87-4f79-8d63-969954d6334b
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2

Bavykin, Dmitry V., Lapkin, Alexei A., Plucinski, Pawel K., Friedrich, Jens M. and Walsh, Frank C. (2005) TiO2 nanotube-supported ruthenium(III) hydrated oxide: a highly active catalyst for selective oxidation of alcohols by oxygen. Journal of Catalysis, 235 (1), 10-17.

Record type: Article

Abstract

Ruthenium(III) hydrated oxide was deposited onto the surface of TiO2 nanotubes via ion exchange followed by alkali treatment. The catalytic activity of Ru(III)/TiO2 catalyst for the selective oxidation of alcohols by oxygen was studied in a continuous multichannel, compact reactor. It was found that the activity of Ru(III)/TiO2 (turnover frequency [TOF] ? 450 h?1) is greater than that of a recently reported Ru(III)/Al2O3 catalyst (TOF = 335 h?1), and that the ruthenium loading could exceed 8 wt% without any significant loss of specific catalytic activity. High-resolution transmission electron microscopy and X-ray diffraction data show that ruthenium is highly dispersed on both the inner and the outer surfaces of the mesoporous TiO2 nanotubes with the diameter of nanoparticles between 1.2 and 2.4 nm, and is easily accessible by reactant molecules.

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More information

Published date: 2005
Keywords: ru(oh)3, ruox.nh2o, nanostructures, titration, deactivation, nanotubular tio2

Identifiers

Local EPrints ID: 23575
URI: https://eprints.soton.ac.uk/id/eprint/23575
ISSN: 0021-9517
PURE UUID: 8a850728-d828-48db-9c3a-1da430f9b5a0

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Date deposited: 20 Mar 2006
Last modified: 18 Oct 2017 13:37

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Contributors

Author: Alexei A. Lapkin
Author: Pawel K. Plucinski
Author: Jens M. Friedrich
Author: Frank C. Walsh

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