on the publication serverTitle data
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.
Vol. 286
(2005)
Issue 1
.
- pp. 96-110.
ISSN 0926-860X
DOI: https://doi.org/10.1016/j.apcata.2005.03.010
Abstract in another language
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.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | Multiphase reaction; Fixed-bed reactor; Fine chemistry; Hydrogenation; Flavor substance; Presaturated one-liquid flow; POLF-reactor; Ionone |
| Institutions of the University: | Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Chemical Engineering Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess Faculties |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 540 Chemistry 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering 600 Technology, medicine, applied sciences > 660 Chemical engineering |
| Date Deposited: | 24 Apr 2015 09:29 |
| Last Modified: | 18 Nov 2016 10:09 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/11156 |
