The University of Southampton
University of Southampton Institutional Repository

Selective oxidation of alcohols in a continuous multifunctional reactor: ruthenium oxide catalysed oxidation of benzyl alcohol

Selective oxidation of alcohols in a continuous multifunctional reactor: ruthenium oxide catalysed oxidation of benzyl alcohol
Selective oxidation of alcohols in a continuous multifunctional reactor: ruthenium oxide catalysed oxidation of benzyl alcohol
A multifunctional compact reactor was designed, built, and tested, using as a model reaction the selective oxidation of benzyl alcohol to benzaldehyde with molecular oxygen. The reactor contains static mixers, heat-transfer channels and mm-scale packed-bed reaction channels, i.e., integrating mixing, heat transfer and reaction functionalities. Integrated compact reactor technology should be particularly attractive to the fine chemistry and pharmaceutical industries. The reactor was shown to operate in the kinetic regime over a broad range of operating conditions due to intensified mass transfer. The reactor was also shown to operate isothermally despite high reaction rate, an appreciable heat effect and high reactant concentration (TOF = 300 h-1, ?H°r = -183.7 kJ mol-1). Staged injection of oxygen along the length of the reactor was investigated as a method of increasing the selectivity of oxidation reactions. Staged injection was shown to be beneficial; however, this was likely to be due to the development of a more uniform hydrodynamic regime of two-phase flow along the packed reaction channel. Experiments were performed with the ruthenium(III) hydrated oxide catalyst supported on alumina (0.9 wt% Ru/Al2O3). High activity and selectivity were observed even when working with reactant concentrations approaching industrial conditions (1 mol L-1).
multifunctional reactors, structured reactors, selective oxidation, ruthenium oxide, compact reactors, three-phase
0926-860X
175-184
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Lapkin, Alexei A.
e5550045-9bdc-4cca-873a-16c2f37a64c8
Kolaczkowski, Stan T.
b62d750a-c726-4fa1-bdcb-8418738c56bb
Plucinski, Pawel K.
d3730fd2-65ab-49bd-adb0-f56600012e10
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Lapkin, Alexei A.
e5550045-9bdc-4cca-873a-16c2f37a64c8
Kolaczkowski, Stan T.
b62d750a-c726-4fa1-bdcb-8418738c56bb
Plucinski, Pawel K.
d3730fd2-65ab-49bd-adb0-f56600012e10

Bavykin, Dmitry V., Lapkin, Alexei A., Kolaczkowski, Stan T. and Plucinski, Pawel K. (2005) Selective oxidation of alcohols in a continuous multifunctional reactor: ruthenium oxide catalysed oxidation of benzyl alcohol. Applied Catalysis A: General, 288 (1-2), 175-184. (doi:10.1016/j.apcata.2005.04.042).

Record type: Article

Abstract

A multifunctional compact reactor was designed, built, and tested, using as a model reaction the selective oxidation of benzyl alcohol to benzaldehyde with molecular oxygen. The reactor contains static mixers, heat-transfer channels and mm-scale packed-bed reaction channels, i.e., integrating mixing, heat transfer and reaction functionalities. Integrated compact reactor technology should be particularly attractive to the fine chemistry and pharmaceutical industries. The reactor was shown to operate in the kinetic regime over a broad range of operating conditions due to intensified mass transfer. The reactor was also shown to operate isothermally despite high reaction rate, an appreciable heat effect and high reactant concentration (TOF = 300 h-1, ?H°r = -183.7 kJ mol-1). Staged injection of oxygen along the length of the reactor was investigated as a method of increasing the selectivity of oxidation reactions. Staged injection was shown to be beneficial; however, this was likely to be due to the development of a more uniform hydrodynamic regime of two-phase flow along the packed reaction channel. Experiments were performed with the ruthenium(III) hydrated oxide catalyst supported on alumina (0.9 wt% Ru/Al2O3). High activity and selectivity were observed even when working with reactant concentrations approaching industrial conditions (1 mol L-1).

Full text not available from this repository.

More information

Published date: 2005
Keywords: multifunctional reactors, structured reactors, selective oxidation, ruthenium oxide, compact reactors, three-phase

Identifiers

Local EPrints ID: 23615
URI: http://eprints.soton.ac.uk/id/eprint/23615
ISSN: 0926-860X
PURE UUID: a15a5e20-be6c-4ef5-9740-4bbf368671c5

Catalogue record

Date deposited: 20 Mar 2006
Last modified: 15 Jul 2019 19:19

Export record

Altmetrics

Contributors

Author: Alexei A. Lapkin
Author: Stan T. Kolaczkowski
Author: Pawel K. Plucinski

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×