Macrokinetic effects in perhydro-N-ethylcarbazole dehydrogenation and H2 productivity optimization by using egg-shell catalysts

Journal article
(Original article)


Publication Details

Author(s): Peters W, Seidel A, Herzog S, Bösmann A, Schwieger W, Wasserscheid P
Journal: Energy and Environmental Science
Publisher: Royal Society of Chemistry
Publication year: 2015
Volume: 8
Journal issue: 10
Pages range: 3013-3021
ISSN: 1754-5692


Abstract


This contribution deals with pore diffusion influences on the dehydrogenation kinetics of perhydro-N-ethylcarbazole (H12-NEC). The reaction is of high interest in the context of hydrogen storage in the N-ethylcarbazole (NEC)/perhydro-N-ethylcarbazole (H12-NEC) Liquid Organic Hydrogen Carrier (LOHC) system. The hydrogen content of H12-NEC is 5.8 wt% and total dehydrogenation releases for each mL of H12-NEC more than 600 mL of H-2. Further optimization of H12-NEC dehydrogenation catalysis requires a better understanding of the role of mass transfer effects. Pore diffusion effects have been studied by preparing egg-shell catalysts (Pt/gamma-alumina layer on alpha-alumina core) of different active layer thicknesses (24 -88 mu m). It has been found that even at very thin catalyst layers (24 mu m) the kinetic regime is limited to 235 degrees C, thus pore diffusion effects the dehydrogenation in almost all commercial catalysts strongly.



FAU Authors / FAU Editors

Bösmann, Andreas Dr.
Lehrstuhl für Chemische Reaktionstechnik
Herzog, Stefan
Lehrstuhl für Chemische Reaktionstechnik
Peters, Willi
Lehrstuhl für Chemische Reaktionstechnik
Schwieger, Wilhelm Prof. Dr.
Professur für Technische Chemie (Reaktionstechnik)
Seidel, Alexander
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


Research Fields

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Peters, W., Seidel, A., Herzog, S., Bösmann, A., Schwieger, W., & Wasserscheid, P. (2015). Macrokinetic effects in perhydro-N-ethylcarbazole dehydrogenation and H2 productivity optimization by using egg-shell catalysts. Energy and Environmental Science, 8(10), 3013-3021. https://dx.doi.org/10.1039/c5ee02024g

MLA:
Peters, Willi, et al. "Macrokinetic effects in perhydro-N-ethylcarbazole dehydrogenation and H2 productivity optimization by using egg-shell catalysts." Energy and Environmental Science 8.10 (2015): 3013-3021.

BibTeX: 

Last updated on 2018-07-08 at 04:59