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Kinetics of catalytic hydrogenation of -ionone and application of a presaturated one-liquid flow reactor for the production of fine chemicals

Titelangaben

Peter, Steffen ; Datsevich, Leonid ; Jess, Andreas:
Kinetics of catalytic hydrogenation of -ionone and application of a presaturated one-liquid flow reactor for the production of fine chemicals.
In: Applied Catalysis A: General. Bd. 286 (2005) Heft 1 . - S. 96-110.
ISSN 0926-860X
DOI: https://doi.org/10.1016/j.apcata.2005.03.010

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Fine chemicals are commonly produced in batch or semibatch reactors, which are frequently operated on a rather limited basis with respect to the knowledge of the kinetics. A typical example is the hydrogenation of the flavor-substance β -ionone. The previously unknown kinetics were studied under industrially relevant conditions (180–230  ° C, 5–90 bar, Raney-Ni). The conversion of the triple-unsaturated β -ionone up to complete hydrogenation proceeds via a network of three parallel and four consecutive reactions. The kinetic parameters were determined, including the influence of external and particularly internal diffusion. Furthermore, the applicability of the presaturated one-liquid flow (POLF) reactor was studied. In this steady-state system, the liquid is externally presaturated with hydrogen, and then fed into a fixed-bed reactor. This leads to a simple – e.g. with respect to scale-up – two-phase system (liquid and solid catalyst) compared to common three-phase batch reactors (and also to “steady-state alternatives” like a trickle bed). For the given reaction, a liquid recycle is installed to compensate the low hydrogen-solubility. Results of experiments and modelling show the good applicability of the POLF-reactor with respect to temperature control, required reactor size, and the inherent advantages of a steady-state process.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Multiphase reaction; Fixed-bed reactor; Fine chemistry; Hydrogenation; Flavor substance; Presaturated one-liquid flow; POLF-reactor; Ionone
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik > Lehrstuhl Chemische Verfahrenstechnik - Univ.-Prof. Dr.-Ing. Andreas Jess
Fakultäten
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 660 Chemische Verfahrenstechnik
Eingestellt am: 24 Apr 2015 09:29
Letzte Änderung: 18 Nov 2016 10:09
URI: https://eref.uni-bayreuth.de/id/eprint/11156