Journal Article

FZJ-2023-00743

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Performance of Continuous Hydrogen Production from Perhydro Benzyltoluene by Catalytic Distillation and Heat Integration Concepts with a Fuel Cell

Rüde, T.FZJ* ; Lu, Y. ; Anschütz, L. ; Blasius, M.FZJ* ; Wolf, M. ; Preuster, P.FZJ* ; Wasserscheid, P.FZJ* ; Geißelbrecht, M. (Corresponding author)FZJ*

2023
Wiley-VCH Weinheim [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/34162  doi:10.1002/ente.202201366

Abstract: The benzyltoluene-based liquid organic hydrogen carrier (LOHC) system enables the safe transport and loss-free storage of hydrogen. At least 26% of the lower heating value of the released hydrogen, however, have to be invested in form of heat to release the stored hydrogen. The low operation temperatures of catalytic distillation (CD) can facilitate waste heat integration to reduce external heat demand. In this work, we demonstrate the continuous hydrogen release from perhydro benzyltoluene via CD. The experimental results reveal that this mode of operation leads to a high hydrogen release rate and very efficient noble metal catalyst usage at exceptionally mild conditions. The hydrogen-based productivity of platinum of 0.35 gH2 gPt-1 min-1 (0.7 kWLHV_H2 gPt-1) at a dehydrogenation temperature of only 267 °C was found to be nearly four times higher than for the conventional continuous liquid phase dehydrogenation at the same temperature. Furthermore, we describe simulation results of the CD process. The feasibility of a fully heat integrated process for electricity generation from the released hydrogen via CD using waste heat from the fuel cell for the CD reboiler is demonstrated. Our simulation highlights the technical potential of coupling the H12-BT dehydrogenation by CD with high-temperature fuel cell operation.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)

Research Program(s):

1. 1232 - Power-based Fuels and Chemicals (POF4-123) (POF4-123)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DEAL Wiley ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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