Application of transient methods in three-phase catalysis: Hydrogenation of a dione in a catalytic plate column

Esa Toukoniitty, Johan Wärnå, Tapio Salmi, Päivi Mäki-Arvela, Dmitry Yu. Murzin*

*Corresponding author for this work

Research output: Contribution to journalConference articleScientificpeer-review

6 Citations (Scopus)

Abstract

The continuous enantioselective hydrogenation of 1-phenyl-1,2-propanedione was investigated in fixed-bed reactor at 25°C and 5 bar H2 over a knitted Pt silica fibre catalyst modified with (-)-cinchonidine. Transient data were quantitatively modelled based on the reaction mechanism which assumes two parallel and tilted adsorption modes for the modifier and two distinct adsorption modes for 1- and 2-carbonyls, each of them requiring different number of surface sites. A dynamic axial dispersion model described the tube reactor with the Peclet number estimated from the separate impulse experiments carried out with an inert tracer. The modelling revealed that inclusion of sorption dynamics of components is of critical importance for the adequate description of transient data.

Original languageEnglish
Pages (from-to)383-389
Number of pages7
JournalCatalysis Today
Volume79-80
DOIs
Publication statusPublished - 30 Apr 2003
MoE publication typeA4 Article in a conference publication
EventCatalysis in Multiphase Reactors - Naples, Italy
Duration: 29 May 200029 May 2000

Keywords

  • Gas chromatograph
  • Peclet number
  • Transient kinetic

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